Database Develop

N900A, T-Mobile ROM, and WiFi Calling/SMS...

Hello,
I just retired my venerable Samsung T699 Relay 4G (RIP QWERTY Keyboard) and, just picked up an unlocked, "refurbished" AT&T Note 3 for pretty cheap (it was sold as an "International" model, so I didn't know it was an AT&T version until I got it). I've had T-Mobile service for the last couple of years, and the big draw, for me, is WiFi calling/SMS; I've installed SafeStrap and been trying some T-Mobile ROMs, but can't seem to get WiFi calling to work. Obviously I've got a T-Mobile SIM card, and I've tried changing/adding APNs, and installing different builds of KitKat (some of which won't even boot - NB4 and NF9 seem to work best), but I still can't get it to work properly. I've been racking my brain and searching the Interspace for the last two weeks with no luck... what am I missing? Is it even possible?
Thanks in advance!

Hello,
As a fellow N900A user on Tmobile, I have been trying to get wifi calling as well.
I tried using a tmobile stock rom with wifi calling baked in (tweaked), but that did not work. I was told that I need to add an emergency 911 address, but even doing this did not do it.
I would think that wifi calling is doable, but something tells me that tmobile might be doing something similar to Verizon. Rumor was that Verizon had a list of IMEIs, and if your IMEI was not on their list, you couldn't bring the phone over to Verizon, even if it were CDMA capable (once again, this is rumor as I cannot confirm this is true).
The closest I have been to getting wifi calling through tmobile was having the settings show on the stock tmobile rom, but that was about it. Maybe someone in the forums has an answer/got it working, but I have yet to see one. I'll keep you posted if I somehow get it to work, but something tells me this won't happen for a while.
AresRising said:
Hello,
I just retired my venerable Samsung T699 Relay 4G (RIP QWERTY Keyboard) and, just picked up an unlocked, "refurbished" AT&T Note 3 for pretty cheap (it was sold as an "International" model, so I didn't know it was an AT&T version until I got it). I've had T-Mobile service for the last couple of years, and the big draw, for me, is WiFi calling/SMS; I've installed SafeStrap and been trying some T-Mobile ROMs, but can't seem to get WiFi calling to work. Obviously I've got a T-Mobile SIM card, and I've tried changing/adding APNs, and installing different builds of KitKat (some of which won't even boot - NB4 and NF9 seem to work best), but I still can't get it to work properly. I've been racking my brain and searching the Interspace for the last two weeks with no luck... what am I missing? Is it even possible?
Thanks in advance!
Click to expand...
Click to collapse

gangpe said:
Hello,
As a fellow N900A user on Tmobile, I have been trying to get wifi calling as well.
I tried using a tmobile stock rom with wifi calling baked in (tweaked), but that did not work. I was told that I need to add an emergency 911 address, but even doing this did not do it.
I would think that wifi calling is doable, but something tells me that tmobile might be doing something similar to Verizon. Rumor was that Verizon had a list of IMEIs, and if your IMEI was not on their list, you couldn't bring the phone over to Verizon, even if it were CDMA capable (once again, this is rumor as I cannot confirm this is true).
The closest I have been to getting wifi calling through tmobile was having the settings show on the stock tmobile rom, but that was about it. Maybe someone in the forums has an answer/got it working, but I have yet to see one. I'll keep you posted if I somehow get it to work, but something tells me this won't happen for a while.
Click to expand...
Click to collapse
Yeah, considering I have zero service with any provider where I live (but 4G LTE 100 yards down the street), WiFi services were the single reason I went with T-Mobile. Considering the Unlocking Bill, one wouldn't think a carrier could block IMEIs from being used on another carrier... but I have a hard time reading the fine print, so there is that.
I've tried several of the stock T-Mobile ROMs, and while WiFi calling was there, it simply wouldn't enable; it would try to enable, but never would. Have you contacted T-Mobile and asked if there are any potential fixes? I'm considering doing that, but am worried that they'll say "Oh, that's your IMEI, looks like you can't use it on our network SORRYABOUTYOURLUCK!"

I have contacted tmobile about this before.
Their response was that they did not know why it did not work. They helped me set up the emergency 911 address, but they said when it comes to other hardware they couldn't give me a reason why it wouldn't work.
I remember dwetherill (sp?) mention that some n900a users were able to get wifi calling on their phones. I don't know if the modem can/will affect wifi calling, but at this point it's the easier thing to test.
I'm on the NJ5 modem - I might try testing out NC2.
Have you tried carl's TMB version of the norma stable rom? Check it out if you haven't. Wifi calling is supposed to connect automatically. I haven't seen it work yet, but I'll keep you posted if somehow I get it to work.
AresRising said:
Yeah, considering I have zero service with any provider where I live (but 4G LTE 100 yards down the street), WiFi services were the single reason I went with T-Mobile. Considering the Unlocking Bill, one wouldn't think a carrier could block IMEIs from being used on another carrier... but I have a hard time reading the fine print, so there is that.
I've tried several of the stock T-Mobile ROMs, and while WiFi calling was there, it simply wouldn't enable; it would try to enable, but never would. Have you contacted T-Mobile and asked if there are any potential fixes? I'm considering doing that, but am worried that they'll say "Oh, that's your IMEI, looks like you can't use it on our network SORRYABOUTYOURLUCK!"
Click to expand...
Click to collapse

gangpe said:
I have contacted tmobile about this before.
Their response was that they did not know why it did not work. They helped me set up the emergency 911 address, but they said when it comes to other hardware they couldn't give me a reason why it wouldn't work.
I remember dwetherill (sp?) mention that some n900a users were able to get wifi calling on their phones. I don't know if the modem can/will affect wifi calling, but at this point it's the easier thing to test.
I'm on the NJ5 modem - I might try testing out NC2.
Have you tried carl's TMB version of the norma stable rom? Check it out if you haven't. Wifi calling is supposed to connect automatically. I haven't seen it work yet, but I'll keep you posted if somehow I get it to work.
Click to expand...
Click to collapse
I'm on NC2, and haven't gotten anything to work as of yet... I've been looking for modem threads, but I guess I need to look a little harder. I'll search that ROM out and give it a shot, and let you know if it works with NC2. Thanks for the heads-up! :good:

So I tried NC2 modem, and it is not allowing for wifi calling.
I went to tmobile yesterday to get another line added. Rumor on the tmobile side is that AT&T is working to get wifi calling setup for the n900a's by around April. Take it as a rumor at this point, seeing how it came from tmobile, but the rep made a good point - AT&T tends to follow what tmobile is doing, so who knows.
Here's to hoping they're right.
BTW, I went to the note 4 tmobile forums, and I grabbed a deodexed stock rom. I noticed that there were a few files related to wifi calling (had WFC in the name). I tried playing around with it last night, and I managed to get the settings. It will even go so far as to turn the phone GSM radio off when you select wifi only. It's doing what Tweaked was doing for me (which was keeping the wifi calling option grayed out (enabling). I think I'm still missing a few files to get it to work, but I'll keep playing around with it later and let you know if I have any success.
AresRising said:
I'm on NC2, and haven't gotten anything to work as of yet... I've been looking for modem threads, but I guess I need to look a little harder. I'll search that ROM out and give it a shot, and let you know if it works with NC2. Thanks for the heads-up! :good:
Click to expand...
Click to collapse

gangpe said:
So I tried NC2 modem, and it is not allowing for wifi calling.
I went to tmobile yesterday to get another line added. Rumor on the tmobile side is that AT&T is working to get wifi calling setup for the n900a's by around April. Take it as a rumor at this point, seeing how it came from tmobile, but the rep made a good point - AT&T tends to follow what tmobile is doing, so who knows.
Here's to hoping they're right.
BTW, I went to the note 4 tmobile forums, and I grabbed a deodexed stock rom. I noticed that there were a few files related to wifi calling (had WFC in the name). I tried playing around with it last night, and I managed to get the settings. It will even go so far as to turn the phone GSM radio off when you select wifi only. It's doing what Tweaked was doing for me (which was keeping the wifi calling option grayed out (enabling). I think I'm still missing a few files to get it to work, but I'll keep playing around with it later and let you know if I have any success.
Click to expand...
Click to collapse
I wonder how that would work regarding using a T-Mobile SIM in the AT&T phone, and if it could support cross-carrier features like that.
You're a braver soul than I, that's for sure. If I knew anything about what I was looking at/for, I'd be more than willing to help get this nut cracked... otherwise, I look forward to your findings!

activating VoLTE

Have finally found the VoLTE settings on the phone but for some reason when I activate it using. *#*#4636#*# it deactivated as soon as I leave the page. Is this because my mobile provider (3 UK) doesn't support it on the Oneplus 3t?

Eggstones said:
Have finally found the VoLTE settings on the phone but for some reason when I activate it using. *#*#4636#*# it deactivated as soon as I leave the page. Is this because my mobile provider (3 UK) doesn't support it on the Oneplus 3t?
Click to expand...
Click to collapse
Do you have the volte switch in your settings ?

VoLTE is a feature that is provisioned by your carrier. Most carriers will not provision VoLTE unless they have an open policy (allows all capable devices), or if you are using a carrier-branded phone. For the second option, lots of carriers claim that it is to ensure stability and quality of service, though I suspect that's all BS they spew in an attempt to sell more of their own phones.
Anyhow, try to find out if your carrier provisions VoLTE to unlocked/unbranded phones. If not, activating the VoLTE setting within the phone will not do anything.

I'm in an AT&T HD Voice coverage area.. never been able to use it or even see if it works. The build.prop edits seem to work for some but I've never been able to get it to work at all.. Could be AT&T blocking it of course since I don't have an AT&T device really on any of my 4 lines.. All unlocked non-carrier phones.

jbarcus81 said:
I'm in an AT&T HD Voice coverage area.. never been able to use it or even see if it works. The build.prop edits seem to work for some but I've never been able to get it to work at all.. Could be AT&T blocking it of course since I don't have an AT&T device really on any of my 4 lines.. All unlocked non-carrier phones.
Click to expand...
Click to collapse
+1

No issues at all for me. USA TMO.
Sent from my OnePlus 3T using XDA Labs

It is toggled on under status bar together with VoWifi but no idea how to activate it. I suspect my carrier doesn't allow it yet for this phone.

I seem to now have been able to activate it by *#800# but still no joy. I'm guessing this is due to three blocking it rather than my phone.

I use the VoLTE enabler in Magisk and once I enable and restart I have no issues. Workout it I don't get HD calling and any call I make, my phone drops from LTE to H. I'm on AT&T.

OP3T on Three UK. Been using crDroid Pie recently and i'm now able to make VoLTE calls. It comes and goes though. The options are in Settings and 'Enabled'. Phone Test shows VoLTE Provisioned. VoLTE icon show up in Status Bar.
Most of the time when i make a call i still see the Signal Icon drop from '4G' to 'H', but if i repeat dial a few times it latches on to VoLTE. I'm not sure why the inconsistency, but my 4G reception is weak and prone to disappearing entirely, so maybe that's why.
Three APN settings in ROM are same as always. No special 'ims' APN or settings.
@Eggstones
Edit: The package 'org.codeauora.ims' has been mentioned a few times for throwing up a 'Device is HD capable' Notification. I assume it's updates to this package that have enabled VoLTE?

@Dirk
I can get the volte to work fine but not the WiFi calling. I'd love to get that working ok.

Eggstones said:
@Dirk
I can get the volte to work fine but not the WiFi calling. I'd love to get that working ok.
Click to expand...
Click to collapse
It's working for me. Turned off Mobile, enabled Wifi calling and had no problem making a call. I think the necessary settings have been added to the ims packages that are commonly included in Pie custom ROMs now.
What ROM are you using at the moment?

Dirk said:
It's working for me. Turned off Mobile, enabled Wifi calling and had no problem making a call. I think the necessary settings have been added to the ims packages that are commonly included in Pie custom ROMs now.
What ROM are you using at the moment?
Click to expand...
Click to collapse
My phone is an OnePlus 3t, android 8.0.0 OOS 5.08
Switched off data and reactivated WiFi calling toggle but no success.

Eggstones said:
My phone is an OnePlus 3t, android 8.0.0 OOS 5.08
Switched off data and reactivated WiFi calling toggle but no success.
Click to expand...
Click to collapse
As i said, it's working on Pie ROMs. It's not going to start working for you unless you update. It's impossible to say if the same will apply when OOS Pie is released. Maybe, maybe not.

Ok ta

Eggstones said:
Ok ta
Click to expand...
Click to collapse
Have you used custom ROMs before? Is there something holding you back, or do you just prefer OOS?

Dirk said:
Have you used custom ROMs before? Is there something holding you back, or do you just prefer OOS?
Click to expand...
Click to collapse
No. I have never tried to install one. Not sure how to do it. I'm aware of various guides but haven't taken the plunge. The furthest I got was rooting some old phones.

Eggstones said:
No. I have never tried to install one. Not sure how to do it. I'm aware of various guides but haven't taken the plunge. The furthest I got was rooting some old phones.
Click to expand...
Click to collapse
You wouldn't need to Root. Everything else is a doddle on this phone. You might give it some thought. The obvious thing is to find out what the differences are and weigh up the pro's and cons. If Battery life is your absolute priority then OOS might be better. If wifi calling is your priority then custom ROMs are the answer. Gotta decide where you might gain, and where you might lose out.
If you decide to go for it, this is a good guide:
https://forum.xda-developers.com/oneplus-5/how-to/oneplus-5-unlock-bootloader-flash-twrp-t3624877
Of course that is for the OP5 so you wouldn't use the software linked in that thread, but the principal is the same. The equivelent software for this phone is available here. The guide gets you through the important steps of unlocking Bootloader and getting TWRP on your phone. Beyond that it's easy as Pie to get a custom ROM on your phone.
Just ask if you need help. I can link you to the files you'd need.

Thank you. I might give it a go later this week

Wifi calling problem

Both my dad and I picked up the Note 8 on launch day. I had zero issue enabling wifi calling out of the box, and in fact it seems to be working quite well for me. He's not had the same success. At first it said it would have to disable Google Voice. We uninstalled the app, and had Sprint de-integrate his number with Google Voice, so that the carrier stock voicemail could be configured. That didn't work initially either, and he spent some time at the store having their tech fix it. I wasn't there, so I'm not sure what they did, but eventually they got the voicemail working. So then he came around asking me to set up wifi calling. I attempted to, only this time the setup prompt insisted that it be allowed to disable Voicemail first. But since that's a system app, I'm not sure how that can be done. And given his problems with voicemail to date, I'm reticent to let it try and disable his voicemail again.
Anybody else run into this problem? Is there some sort of fix that doesn't involve another visit to Sprint?

beerindex said:
Both my dad and I picked up the Note 8 on launch day. I had zero issue enabling wifi calling out of the box, and in fact it seems to be working quite well for me. He's not had the same success. At first it said it would have to disable Google Voice. We uninstalled the app, and had Sprint de-integrate his number with Google Voice, so that the carrier stock voicemail could be configured. That didn't work initially either, and he spent some time at the store having their tech fix it. I wasn't there, so I'm not sure what they did, but eventually they got the voicemail working. So then he came around asking me to set up wifi calling. I attempted to, only this time the setup prompt insisted that it be allowed to disable Voicemail first. But since that's a system app, I'm not sure how that can be done. And given his problems with voicemail to date, I'm reticent to let it try and disable his voicemail again.
Anybody else run into this problem? Is there some sort of fix that doesn't involve another visit to Sprint?
Click to expand...
Click to collapse
If you are having issues with things not working on Sprint, I first had to factory reset...all was well afterwards...make sure you have a brand new SIM for the Note 8...is it a Sprint or Unlocked device (SM-N950U or SM-950U1)

BlueFox721 said:
If you are having issues with things not working on Sprint, I first had to factory reset...all was well afterwards...make sure you have a brand new SIM for the Note 8...is it a Sprint or Unlocked device (SM-N950U or SM-950U1)
Click to expand...
Click to collapse
It is a N950U from Sprint with carrier lock.

beerindex said:
It is a N950U from Sprint with carrier lock.
Click to expand...
Click to collapse
Coolness, factory reset is probably the best...unless it is because of a previously used SIM

I have an unlocked note 8 (US) on Verizon, and no wifi calling at all.

WiFi Calling on Verizon?
bovineyard said:
I have an unlocked note 8 (US) on Verizon, and no wifi calling at all.
Click to expand...
Click to collapse
Same here. I bought mine directly from Samsung and just found out that the option to select WiFi calling is missing! I rely on this at home because we live in a valley with poor cell phone reception (I have to step to a front window to make/receive calls without WiFi calling).

jeffp25 said:
Same here. I bought mine directly from Samsung and just found out that the option to select WiFi calling is missing! I rely on this at home because we live in a valley with poor cell phone reception (I have to step to a front window to make/receive calls without WiFi calling).
Click to expand...
Click to collapse
You can flash Verizon firmware if you want WiFi calling on Verizon...but some users have successfully had it added to the unlocked version by calling Verizon and adding their imei to Verizon database....search the threads if you need...

BlueFox721 said:
You can flash Verizon firmware if you want WiFi calling on Verizon...but some users have successfully had it added to the unlocked version by calling Verizon and adding their imei to Verizon database....search the threads if you need...
Click to expand...
Click to collapse
Thanks. I tried searching the threads but didn't find much. Maybe I need to change how I'm searching. If I do need to "flash the Verizon firmware," where can I find instructions and will it add bloat or reduce the functionality in any way (I wanted non-Verizon because of the way Verizon changed features on my Note 5)? Will flashing the firmware interfere with the Samsung support?

jeffp25 said:
Thanks. I tried searching the threads but didn't find much. Maybe I need to change how I'm searching. If I do need to "flash the Verizon firmware," where can I find instructions and will it add bloat or reduce the functionality in any way (I wanted non-Verizon because of the way Verizon changed features on my Note 5)? Will flashing the firmware interfere with the Samsung support?
Click to expand...
Click to collapse
You can flash Verizon firmware with Odin using this guide:
https://forum.xda-developers.com/ga...k-recovery-odin-recovery-software-t3671615...
Some Samsung features are blocked by carriers...I do not know what Verizon blocks...search is better from pc

BlueFox721 said:
You can flash Verizon firmware with Odin using this guide:
https://forum.xda-developers.com/ga...k-recovery-odin-recovery-software-t3671615...
Some Samsung features are blocked by carriers...I do not know what Verizon blocks...search is better from pc
Click to expand...
Click to collapse
I called Samsung tech support and they confirmed that this feature is not in the based version of Android but the ones distributed by the carriers. The tech suggested calling Verizon and asking them to install the firmware. Anyone know if (assuming they agree) this will be the full package, including all the bloatware, and if this will remove any features from the phone? Would the "upgrade" wipe out the phone so that I have to set everything up again?
When I bought my Note 5 from Verizon two years ago I was upset to find that they had removed the PDF signing capability that was a big feature of the Note 5. I'd really hate to lose any features on my new Note 8, after all that's why I bought directly from Samsung.

jeffp25 said:
I called Samsung tech support and they confirmed that this feature is not in the based version of Android but the ones distributed by the carriers. The tech suggested calling Verizon and asking them to install the firmware. Anyone know if (assuming they agree) this will be the full package, including all the bloatware, and if this will remove any features from the phone? Would the "upgrade" wipe out the phone so that I have to set everything up again?
When I bought my Note 5 from Verizon two years ago I was upset to find that they had removed the PDF signing capability that was a big feature of the Note 5. I'd really hate to lose any features on my new Note 8, after all that's why I bought directly from Samsung.
Click to expand...
Click to collapse
In order for you to remain on unlocked firmware to avoid bloat and keep Samsung goodies you must call Verizon to have the imei # to their whitelist and reprovisioned...I did this for Sprint to enable VoLTE when available...others with Verizon have done the same...call Verizon cs and tell them you bought from Samsung and need to have your imei # whitelisted and reprovisioned to improve network connection...if one rep will not do it, call another...do not mention that it is unlocked version...just state that you got from Samsung on a Note 7 deal...afterwards, all Verizon features will work on unlocked except vvm...Google voice is better anyways

BlueFox721 said:
In order for you to remain on unlocked firmware to avoid bloat and keep Samsung goodies you must call Verizon to have the imei # to their whitelist and reprovisioned...I did this for Sprint to enable VoLTE when available...others with Verizon have done the same...call Verizon cs and tell them you bought from Samsung and need to have your imei # whitelisted and reprovisioned to improve network connection...if one rep will not do it, call another...do not mention that it is unlocked version...just state that you got from Samsung on a Note 7 deal...afterwards, all Verizon features will work on unlocked except vvm...Google voice is better anyways
Click to expand...
Click to collapse
If I get them to add my imei to the whitelist and "reprovision" the phone, when they do that the option for WiFi calling will appear?
I'm slightly puzzled by your vvm comment: will all Verizon voicemail be non-functional or only Visual Voicemail? I have Google Voice set up to provide a second number on my phone. How do I use it to set up voice mail on my phone with my Verizon number?

jeffp25 said:
If I get them to add my imei to the whitelist and "reprovision" the phone, when they do that the option for WiFi calling will appear?
I'm slightly puzzled by your vvm comment: will all Verizon voicemail be non-functional or only Visual Voicemail? I have Google Voice set up to provide a second number on my phone. How do I use it to set up voice mail on my phone with my Verizon number?
Click to expand...
Click to collapse
VVM is only on carrier Firmware...it is baked in...some have gotten it to work on unlocked but I do not know how...regular voicemail works fine...especially with Google voice...to set it up you forward to Google voice...for Sprint it is dialing *73mygooglevoicenumber...I do not know the forward shortcut for verizon but it used to be *71yourgooglevoicenumber...
Your Google voice number is shown in the settings of Google voice.
Yes WiFi calling and VoLTE will work once imei is added...look for WiFi calling in the phone settings...

BlueFox721 said:
VVM is only on carrier Firmware...it is baked in...some have gotten it to work on unlocked but I do not know how...regular voicemail works fine...especially with Google voice...to set it up you forward to Google voice...for Sprint it is dialing *73mygooglevoicenumber...I do not know the forward shortcut for verizon but it used to be *71yourgooglevoicenumber...
Your Google voice number is shown in the settings of Google voice.
Yes WiFi calling and VoLTE will work once imei is added...look for WiFi calling in the phone settings...
Click to expand...
Click to collapse
OK, I'll have to try and reach them. I'll follow up with my results later.

No luck with today's call
BlueFox721 said:
VVM is only on carrier Firmware...it is baked in...some have gotten it to work on unlocked but I do not know how...regular voicemail works fine...especially with Google voice...to set it up you forward to Google voice...for Sprint it is dialing *73mygooglevoicenumber...I do not know the forward shortcut for verizon but it used to be *71yourgooglevoicenumber...
Your Google voice number is shown in the settings of Google voice.
Yes WiFi calling and VoLTE will work once imei is added...look for WiFi calling in the phone settings...
Click to expand...
Click to collapse
First, I found the Google Voice shortcut for Verizon is what you thought: *71yourgooglevoicenumber
Now for my bad news. I spent nearly an hour on the phone with Verizon tech support. After being bounced around a little, I spoke with a woman who kept contacting their "Network Team" for more details, and who tried to be very helpful, but in the end I am no further ahead. In the end, they said that adding my phone to the Whitelist was "Out of Scope" because the phone was already unlocked and functioning on Verizon. She said that all she could suggest was to contact Samsung, and that Verizon tech support would be happy to have a three-way conference call with Samsung tech support (they would call) to see what could be done, and that she'd put a note in my account about this issue.
Now, if I call back and try to speak to anyone else they will see this note that that will be it. So, I'm back to not being able to make phone calls at home.

jeffp25 said:
First, I found the Google Voice shortcut for Verizon is what you thought: *71yourgooglevoicenumber
Now for my bad news. I spent nearly an hour on the phone with Verizon tech support. After being bounced around a little, I spoke with a woman who kept contacting their "Network Team" for more details, and who tried to be very helpful, but in the end I am no further ahead. In the end, they said that adding my phone to the Whitelist was "Out of Scope" because the phone was already unlocked and functioning on Verizon. She said that all she could suggest was to contact Samsung, and that Verizon tech support would be happy to have a three-way conference call with Samsung tech support (they would call) to see what could be done, and that she'd put a note in my account about this issue.
Now, if I call back and try to speak to anyone else they will see this note that that will be it. So, I'm back to not being able to make phone calls at home.
Click to expand...
Click to collapse
You may be stuck with flashing complete firmware...you can always root the complete firmware and debloat...sorry it's not working for you

BlueFox721 said:
You may be stuck with flashing complete firmware...you can always root the complete firmware and debloat...sorry it's not working for you
Click to expand...
Click to collapse
For now, I have a partial solution for the poor phone connection at home: years ago, after we had complained a lot about a poor signal at home, Verizon gave us a free "Network extender," which acts as a mini tower in our house (connected through the house Internet). It is only 3G, so I disconnected it when we had WiFi calling on our phones. Now, I'll reconnect it. The only problem is that is won't connect to a phone with VoLTE calling enabled, so I have to remember to turn off VoLTE calling when I get home, and turn it back on when I leave so that I can keep my Internet access on a phone call.

N950N Olympics edition having trouble on TMobile

Hi all,
Received an Olympic edition note 8 (n950n) at the Olympics. We were supplied originally with a KT sim and even in the settings there's a "service provider" menu of KT related items. I have gotten back to North America and popped in my TMobile sim. It took resetting all network settings until I finally got LTE working on it.
However, volte doesn't seem to work at all. I even downloaded the shortcut master and went to ims settings to enable volte switch but still switches to 3g when I make a call. Similarly it can't even find hd calling. The option in shortcut master "hd voice" shortcut says "not found" when I try to launch it.
Ideally it seems as though I just need a different CSC but I don't want to void any warranty on this phone, especially given that I'm sure Samsung USA won't touch it since it's an international model.
Are the n950n's just lacking in many features?
Thanks!

I dont know how your carrier handles VOLTE, but my carrier requested me to go in person and there they activated the service

hgeek23 said:
Hi all,
Received an Olympic edition note 8 (n950n) at the Olympics. We were supplied originally with a KT sim and even in the settings there's a "service provider" menu of KT related items. I have gotten back to North America and popped in my TMobile sim. It took resetting all network settings until I finally got LTE working on it.
However, volte doesn't seem to work at all. I even downloaded the shortcut master and went to ims settings to enable volte switch but still switches to 3g when I make a call. Similarly it can't even find hd calling. The option in shortcut master "hd voice" shortcut says "not found" when I try to launch it.
Ideally it seems as though I just need a different CSC but I don't want to void any warranty on this phone, especially given that I'm sure Samsung USA won't touch it since it's an international model.
Are the n950n's just lacking in many features?
Thanks!
Click to expand...
Click to collapse
Hey There,
I'm glad to stumble upon an actual user of an Olympic edition.
Would you mind installing Samsung PhoneInfo app from playstore and sharing your current CSC Code, and your Device Model number - which I assume is N950N ?
I'm just looking for a way to obtain the bootanimation and the theme of it...

hgeek23 said:
Hi all,
Received an Olympic edition note 8 (n950n) at the Olympics. We were supplied originally with a KT sim and even in the settings there's a "service provider" menu of KT related items. I have gotten back to North America and popped in my TMobile sim. It took resetting all network settings until I finally got LTE working on it.
However, volte doesn't seem to work at all. I even downloaded the shortcut master and went to ims settings to enable volte switch but still switches to 3g when I make a call. Similarly it can't even find hd calling. The option in shortcut master "hd voice" shortcut says "not found" when I try to launch it.
Ideally it seems as though I just need a different CSC but I don't want to void any warranty on this phone, especially given that I'm sure Samsung USA won't touch it since it's an international model.
Are the n950n's just lacking in many features?
Thanks!
Click to expand...
Click to collapse
Short answer, sell it and get the USA version.
Sent from my SM-N950U using Tapatalk

Don't want to sell something that has such sentimental value to me

Product code SM-N950NZWZKTC
CSC code KTC

Additionally it doesn't seem to have the ability to have conference calls?

If you enabled all the switches through IMS setting & VoLTE still doesn't work, you'll need T-mobile CSC to get it working. Aside from the IMS settings, there are some VoLTE related settings in cscfeatures.xml. I have a N950F with modified T Mobile CSC, VoLTE, Wifi calling are working fine, I also have the VoLTE quick setting tile. But I'm rooted & is how I installed it
You'll need T Mobile CSC for wfi calling.
---------- Post added at 05:06 PM ---------- Previous post was at 04:56 PM ----------
Limeybastard said:
Short answer, sell it and get the USA version.
Sent from my SM-N950U using Tapatalk
Click to expand...
Click to collapse
Heck no, I say root it, I'd never trade it for a US Snapdragon but that's just me. Can easily get VoLTE working along with many more features.

shouren04 said:
If you enabled all the switches through IMS setting & VoLTE still doesn't work, you'll need T-mobile CSC to get it working. Aside from the IMS settings, there are some VoLTE related settings in cscfeatures.xml. I have a N950F with modified T Mobile CSC, VoLTE, Wifi calling are working fine, I also have the VoLTE quick setting tile. But I'm rooted & is how I installed it
You'll need T Mobile CSC for wfi calling.
Click to expand...
Click to collapse
Will the Tmobile CSC work on this particular device? Tmobile csc i thought would not work on the 950n's as its not the same hardware?
where can i get the csc?

hgeek23 said:
Will the Tmobile CSC work on this particular device? Tmobile csc i thought would not work on the 950n's as its not the same hardware?
where can i get the csc?
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Click to collapse
That I have no idea, I have no idea if flashing just the CSC file works between different model/chipset phones. I assume not. I rooted my phone in 2 days so I have no experience flashing official CSC files.
I'm using a modified version of TEKHD's S8 T-Mobile transformation pack. It's an early version of the following mod that I further modified for myself.
[MOD] Exynos T-Mobile CSC Wifi Calling, VoLTE etc for N950N / N950F
The person who made it has a N & specifically made it to get VoLTE & WIFI calling to work on N models. I'm using an earlier version cause it works fine on F models but still had issues on N models. To summarize that thread, he finally got it working fine for N models with nothing additional needed. But you need TWRP & root to install it.

Limeybastard said:
Short answer, sell it and get the USA version.
Sent from my SM-N950U using Tapatalk
Click to expand...
Click to collapse
shouren04 said:
That I have no idea, I have no idea if flashing just the CSC file works between different model/chipset phones. I assume not. I rooted my phone in 2 days so I have no experience flashing official CSC files.
I'm using a modified version of TEKHD's S8 T-Mobile transformation pack. It's an early version of the following mod that I further modified for myself.
[MOD] Exynos T-Mobile CSC Wifi Calling, VoLTE etc for N950N / N950F
The person who made it has a N & specifically made it to get VoLTE & WIFI calling to work on N models. I'm using an earlier version cause it works fine on F models but still had issues on N models. To summarize that thread, he finally got it working fine for N models with nothing additional needed. But you need TWRP & root to install it.
Click to expand...
Click to collapse
I need to flash a new kernel? Firmware? Will this replace the Olympics bootscreen?

@hgeek23 Did you see my PM ? Thanks

hgeek23 said:
I need to flash a new kernel? Firmware? Will this replace the Olympics bootscreen?
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Click to collapse
It won't replace the Olympics boot screen but it will trip Knox & may void warranty (not sure what warranty laws are from the original COO, some countries don't void warranty for tripping Knox). But if you are in the US, you can't claim warranty on the phone in the US anyway.
You'd have to install TWRP & root your phone to install the mod I linked. But being how rare that phone is, I wouldn't do it unless you find a copy of the stock Olympics FW for that phone in case anything happens. Seems like others have been looking for it but can't find it yet. Other say it's just a theme that can be installed but if it has a different boot screen then I doubt it's just a theme for the theme store.

hgeek23 said:
Hi all,
Received an Olympic edition note 8 (n950n) at the Olympics. We were supplied originally with a KT sim and even in the settings there's a "service provider" menu of KT related items. I have gotten back to North America and popped in my TMobile sim. It took resetting all network settings until I finally got LTE working on it.
However, volte doesn't seem to work at all. I even downloaded the shortcut master and went to ims settings to enable volte switch but still switches to 3g when I make a call. Similarly it can't even find hd calling. The option in shortcut master "hd voice" shortcut says "not found" when I try to launch it.
Ideally it seems as though I just need a different CSC but I don't want to void any warranty on this phone, especially given that I'm sure Samsung USA won't touch it since it's an international model.
Are the n950n's just lacking in many features?
Thanks!
Click to expand...
Click to collapse
Maybe you've got the rare paralympic edition of Note8 which isn't capable of it? (I know, tastefully offensive. I'll be going to hell for that joke)
On a serious note, since it's the N950N which is similar to the N950F afaik, you're better off asking TMobile directly about any connectivity issues.
Usually like others have previously mentioned, should be CSC related but f.e. (if I'm not mistaken) due to the OMC folder/ structure, nearly all country CSC are included. Just the CSC features aren't accessible unless you replace the specific CSC with a modified one from S8/S8+.
If TMobile can't fix it or help you out, you're choice would be to root, double check with a N950F/N950N user if they have volte or (someone has to jump in here to verify) try flashing -if available- factory binaries for specifically USA.

I doubt T-Mobile will help or can even do anything being an international phone. My F on T-Mobile USA worked perfectly fine. You don't need IMEI provisioning with T-Mobile USA like you do with some carriers like AT&T. My speeds were great out the box, better than my T-Mobile Note 5, just didn't have VoLTE & Wifi calling until I enabled them w/ root. We now have 2 more Note 8s in the household, U T-Mobile variants. Speeds are pretty much exactly the same as my F.

shouren04 said:
That I have no idea, I have no idea if flashing just the CSC file works between different model/chipset phones. I assume not. I rooted my phone in 2 days so I have no experience flashing official CSC files.
I'm using a modified version of TEKHD's S8 T-Mobile transformation pack. It's an early version of the following mod that I further modified for myself.
[MOD] Exynos T-Mobile CSC Wifi Calling, VoLTE etc for N950N / N950F
The person who made it has a N & specifically made it to get VoLTE & WIFI calling to work on N models. I'm using an earlier version cause it works fine on F models but still had issues on N models. To summarize that thread, he finally got it working fine for N models with nothing additional needed. But you need TWRP & root to install it.
Click to expand...
Click to collapse
Hey there, I thought I recognized the name. Remember me? One of the first to test and rip open the F model to try and figure out the LTE issue / carrier aggregation issue.
I've read through some pages over on the OEM Lock thread ... so to conclude, they figured out the issue with the OEM lock disappearing, but did they ever figure out the carrier aggregation for using F/N model 100% on T-Mobile??
I know people with the F and N models that are still suffering from carrier aggregation and like this Olympic Edition model, which is just a N model with a cool back white Olympic cover. Those who plan to use this on T-Mobile may face the LTE connectivity (carrier aggregation) issue..
For those in really good reception areas may not seem like they have an issue, but that is because they are connected to a really strong (single) signal/frequency, which makes it seem like everything is fine...
Would you be able to provide links to any progress regarding this issue? Has it been solved? If so, it's likely buried in the pages somewhere in the other threads....:highfive:

iunlock said:
Hey there, I thought I recognized the name. Remember me? One of the first to test and rip open the F model to try and figure out the LTE issue / carrier aggregation issue.
I've read through some pages over on the OEM Lock thread ... so to conclude, they figured out the issue with the OEM lock disappearing, but did they ever figure out the carrier aggregation for using F/N model 100% on T-Mobile??
I know people with the F and N models that are still suffering from carrier aggregation and like this Olympic Edition model, which is just a N model with a cool back white Olympic cover. Those who plan to use this on T-Mobile may face the LTE connectivity (carrier aggregation) issue..
For those in really good reception areas may not seem like they have an issue, but that is because they are connected to a really strong (single) signal/frequency, which makes it seem like everything is fine...
Would you be able to provide links to any progress regarding this issue? Has it been solved? If so, it's likely buried in the pages somewhere in the other threads....:highfive:
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Click to collapse
Yes I remember you. I may not be the best guy to answer your questions but I'll share what I remember.
If you remember, I was just about the only guy in those threads that didn't experience any of the issues you guys did. I'm still using an early version of KT's TMO zip which was basically a slightly modified version of tekhd's S8 zip. The versions to follow is when they started changing more & had issues as it was later found out that the TMB_keystrings.dat from N950U was the cause. Once they replaced that file the issues were reported to have been resolved. I think the current version is like 9m or something I like, I'm using 3a & always have been, never tried any later versions & is probably why I never experienced those issues.
At home my reception is not very good nor are speeds, I get 20-40mbps depending on the time of day. This was the same before I used the zip. My CA combos were different than what the zip gave me but I still had the combos that get's used the most in my area. Around town in good areas I can get 80-135mbps. I stopped checking as I put the subject to rest a while ago.
A few months ago my parents both got Tmobile N950Us. I compared my F with the TMO zip & speeds are pretty much the same, sometimes my F is slightly faster, sometimes the U, but not a big difference so I consider that other factors & call them the same. I've even tried a speed test at a local T-mobile store & the speed was like 6mbps (that area I know doesn't have good coverage) on a U where mine was getting just under 20. Still I'm not saying my F is any better but since I was able to test actual T-Mobile U variants, I don't believe my phone to have any issues with speeds & CA in my area.

Yes the Olympics edition is simply an N with a theme applied and physical cover with the logo on it. the bootscreen is an olympics logo etc.
Merging calls doesnt seem possible, i dont know why. LTE frequently drops on Tmobile now and just goes to 3g or no service at all.
Volte not working either.

I had a similar situation. I bought my phone (N950F) from abroad. Although the phone was in the compatible devices list of my carrier company, they told me that VoLTE could not be used on phones taken from abroad (silly reason). VoLTE enable is carried out by sending a request SMS to the carrier. I put my SIM card into a friend's phone, and sent the request through it. My carrier enabled my SIM card. I put it back to my phone and voila! I have been using VoLTE since then without any problem.

Just wanted to post a final kind of update and that is that the above referenced CSC for Tmobile worked well.

Is Volte and/or Wifi Calling working on the X50

I need the dual sim and need to make sure Volte at least is working, particularly on T Mobile USA and EE UK

Not working it has it just haven't been able to provision it

comp101inc said:
Not working it has it just haven't been able to provision it
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So after several emails with Realme I was finally able to talk to someone, they did call me as well.
This person gave me a song and dance lie that Volte in fact wasn't shut off and also said in his response there is no way to see a toggle switch either. Which we both know to be an absolute lie.
I told him people are complaining across forums from various countries, it clearly fell on deaf ears as the company line of it is on was repeated. Then I was told also it doesn't work on T Mobile because they're not in the North American market and didn't install T Mobile firmware. Well, you don't need to and it doesn't matter where in the world goes as long as the carrier has Volte and the device has it, it works.
It's clear they know it's shut off on purpose and just tell lies with no intention of turning it on. The only way anyone who buys one of their devices is going to get it is to root the device and go in and turn it on yourself.
Not sure how I see this company growing if this is going to be their attitude and behavior.

Thanks for the update ROOT here I come

comp101inc said:
Thanks for the update ROOT here I come
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It would be so cool if you suceeded at rooting the X50 and shared your progress!

comp101inc said:
Thanks for the update ROOT here I come
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Click to collapse
Let us know how that works out
Have you complained to realme? I ended up sending an email to their President of India and Europe. That's how I got someone to actually give me a response then call.
I also have a Umidigi A7 Pro, it's a $100 device and yet VoLTE and Wifi Calling works no problem.... Yet Realme can't seem to get its act together.

I also have a umidigi power3 and volte and vowifi works there. So realme needs to get there act together.

comp101inc said:
I also have a umidigi power3 and volte and vowifi works there. So realme needs to get there act together.
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Click to collapse
I'm wondering is root is absolutely needed and if like their sister company Oneplus who hid the function switch in the 8 models, if using the QPST tool would get you to the menu to change the VoLTE profile and get it working on their devices.
From what I am seeing the two companies both are now hiding the menu's, so that tells me they're both following the same game plan. There's several posts and a video showing using QPST to change the profile and get VoLTE working.
Do you think this would work?

Hi all
Did you find a way to activate VOLTE ? I have a x50 pro 5g, settings made for 4g brands, volte OK with my provider but not on the phone.
Thank you