Question S21 Ultra on Verizon Constantly Switching Cell Networks - Samsung Galaxy S21 Ultra

I've been banging my head against the wall with this issue for a while now. I have contacted both Samsung and Verizon but so far no luck in resolving the issue. I'm wondering if anyone else is experiencing this.
My S21 Ultra on Verizon is constantly switching between LTE and LTE+. This wouldn't be an issue were it not for the fact that apparently a great deal of the time it actually has no connection at all. This manifests itself with:
1) Text messages that fail to send, or indicate they failed to send when they actually were sent.
2) Incoming calls going directly to voicemail.
3) Outgoing calls that can't be placed unless I toggle Airplane Mode on and then off. (Though as it turns out, sometimes the failed attempts do ring on the recipients phone.)
At some of these times I may see a message along the lines of "Sim Card Not Present." And yes--the SIM card has already been replaced.
3) isn't much of an issue, as I have complete control over that. But 1) and 2) are both really annoying.
I made a screen capture video for a Verizon tech who is trying to help. In 40 seconds my phone switched between LTE and LTE+ six times.
A work-around that seems to be helping is using the "Samsung Band Selection" app to pick a network. I've done that all day today and have not had issues, though I also have not traveled anywhere. I fear this is not a great solution, though, as I don't think I'll be able to use it when moving around.
Is anyone else having experiences like these with the S21 Ultra? If so, are you also on Verizon?
Thanks!

Andyw2100 said:
I've been banging my head against the wall with this issue for a while now. I have contacted both Samsung and Verizon but so far no luck in resolving the issue. I'm wondering if anyone else is experiencing this.
My S21 Ultra on Verizon is constantly switching between LTE and LTE+. This wouldn't be an issue were it not for the fact that apparently a great deal of the time it actually has no connection at all. This manifests itself with:
1) Text messages that fail to send, or indicate they failed to send when they actually were sent.
2) Incoming calls going directly to voicemail.
3) Outgoing calls that can't be placed unless I toggle Airplane Mode on and then off. (Though as it turns out, sometimes the failed attempts do ring on the recipients phone.)
At some of these times I may see a message along the lines of "Sim Card Not Present." And yes--the SIM card has already been replaced.
3) isn't much of an issue, as I have complete control over that. But 1) and 2) are both really annoying.
I made a screen capture video for a Verizon tech who is trying to help. In 40 seconds my phone switched between LTE and LTE+ six times.
A work-around that seems to be helping is using the "Samsung Band Selection" app to pick a network. I've done that all day today and have not had issues, though I also have not traveled anywhere. I fear this is not a great solution, though, as I don't think I'll be able to use it when moving around.
Is anyone else having experiences like these with the S21 Ultra? If so, are you also on Verizon?
Thanks!
Click to expand...
Click to collapse
I was having the same issues. I was also seeing the device lose all network connection in an area with strong 4G. Verizon sent me a new s21u. That did not help. What I have been reading is that it has to do with 5G settings. Having a 5G sim card installed, the device is always looking for 5G. When it can't be located it defaults to 4G. During this process it seems to loose connection. Verizon in its wisdom removed our ability to access ALL the network settings, in particular the ability to select your preferred network type. It is automatically set to 5G. I installed the paid (donation) version of "Samsung Band Selection" from the play store. This allows access to the advanced network setting and allows you to select LTE under the Preferred Network Type. This seems to have fixed 99% of my connection issues.

jadams161 said:
I was having the same issues. I was also seeing the device lose all network connection in an area with strong 4G. Verizon sent me a new s21u. That did not help. What I have been reading is that it has to do with 5G settings. Having a 5G sim card installed, the device is always looking for 5G. When it can't be located it defaults to 4G. During this process it seems to loose connection. Verizon in its wisdom removed our ability to access ALL the network settings, in particular the ability to select your preferred network type. It is automatically set to 5G. I installed the paid (donation) version of "Samsung Band Selection" from the play store. This allows access to the advanced network setting and allows you to select LTE under the Preferred Network Type. This seems to have fixed 99% of my connection issues.
Click to expand...
Click to collapse
ooh... Awesome! Downloaded and changed the setting. Thanks!

Related

[Q] Wifi Calling?

I'm not even 100% if the N4 has it so can anyone verify this? I have horrible service on the first floor of my house (especially my couch smh...) so I need to know that this works
If it's the T-Mobile version, then yes you have Wi-Fi calling.
Yes it does
I got the white note 4 from tmobile on monday. Yes it does have wifi calling. It works well.
WiFi Calling Not Working
Just got my Tmo Samsung Galaxy Note 4 today after Pre-Ordering and Jumping from the Note 3. Decided to go with the SIM Card that came with the Note 4. Got the phone all set up and connected to WiFi and received "ER081 - Unable to connect" Error. Called Tmo and after checking my 911 info and verifying the new SIM Card was registered and such I got patched to Tech Support and reverifed everything. Popped out the battery while he reconnected the phone to the Tmo Network, same error. I have the Tmo Asus CellSpot along with another router as well, same error on both routers. The funny thing is they attempted to send some type of Verification Text Msg and I received "Content not supported" on my end. Anyone else having simular issues? I have good signal throughout my house, its just the matter of a major feature not working on a brand new phone. Tech Support said to give it till morning and call back if it still is not working. KLJ
kayslay21 said:
I'm not even 100% if the N4 has it so can anyone verify this? I have horrible service on the first floor of my house (especially my couch smh...) so I need to know that this works
Click to expand...
Click to collapse
texting doesn't work when I have wifi calling enabled
I suffered from the same problem and it seems to be a permanent problem as no amount of help from T-mobile could rectify the issue....so the phone goes back to be replaced hopefully by one with a little more luck!!! Ill be interested to hear how you get along with it!!
LJackson0301 said:
Just got my Tmo Samsung Galaxy Note 4 today after Pre-Ordering and Jumping from the Note 3. Decided to go with the SIM Card that came with the Note 4. Got the phone all set up and connected to WiFi and received "ER081 - Unable to connect" Error. Called Tmo and after checking my 911 info and verifying the new SIM Card was registered and such I got patched to Tech Support and reverifed everything. Popped out the battery while he reconnected the phone to the Tmo Network, same error. I have the Tmo Asus CellSpot along with another router as well, same error on both routers. The funny thing is they attempted to send some type of Verification Text Msg and I received "Content not supported" on my end. Anyone else having simular issues? I have good signal throughout my house, its just the matter of a major feature not working on a brand new phone. Tech Support said to give it till morning and call back if it still is not working. KLJ
Click to expand...
Click to collapse
I found WiFi calling and text work. The voice had a lot of drop outs on the note 4 however. My wife's note 3 is perfect on WiFi calling without a hint of a drop out.
Sent from my SM-N910T using XDA Free mobile app
I'm starting to believe that TMO's version was not ready for release. I am now also getting the ER081 message, slow data speeds (as in <1 Mb/s with the LTE icon lit). These problems have really dampened my enthusiasm for the phone. :crying:
RiverCity.45 said:
I'm starting to believe that TMO's version was not ready for release. I am now also getting the ER081 message, slow data speeds (as in <1 Mb/s with the LTE icon lit). These problems have really dampened my enthusiasm for the phone. :crying:
Click to expand...
Click to collapse
Does the phone intermittently show ER081 or is it permanent now?!
jadmh said:
Does the phone intermittently show ER081 or is it permanent now?!
Click to expand...
Click to collapse
It showed for several hours. Then, magically, went away.
RiverCity.45 said:
It showed for several hours. Then, magically, went away.
Click to expand...
Click to collapse
I managed to find that using another phone as a hotspot actually allowed me to get wifi calling...strangely though the cellular signal did not grey out.....when wifi-calling is enabled as preferred on others' note 4s, do your cellular signal stay on too?!
My Wifi calling took overnight to become active, probably because I'm a new customer and my account was still being provisioned. I have both the Wifi and cell signals in my notification bar.
People with the ER081....
You can try to following:
If your connected to your Wifi Network.
Go to Phone - Setting - Call - Wifi Calling - Switch it off and then back on.
This would re-enable the wifi calling feature and you will see the error go away.
Not sure why it gives the ERO81 code, but I have it come up as well.
twe90kid said:
People with the ER081....
You can try to following:
If your connected to your Wifi Network.
Go to Phone - Setting - Call - Wifi Calling - Switch it off and then back on.
This would re-enable the wifi calling feature and you will see the error go away.
Not sure why it gives the ERO81 code, but I have it come up as well.
Click to expand...
Click to collapse
First thing I tried. No joy. But, the problem seems to be intermittent and not permanent for me.
My problem is a little different. I get the wifi calling icon, but when I make a call, the other party can't hear me. When I turn it off, everything is A-OK. I'm not sure how to remedy this.
Call t mobile and tell them when new Sim card was activated WiFi calling was not set up perfect. Then before last step tell them to refresh you on network.
NOTE 4
I had an issue with my text messages using the SIM card that came with the phone. I returned to the store and they told me there have been issues with those Sim cards that are ISIS enabled due to the security measures. They gave me a non ISIS one and now mine works flawlessly.
I'm getting frequent Er081's on my TMobile Note Edge. I've tried 3 different ISPs with speeds from 10m-500m, tweaked the QOS and COS on each, multiple wifi's etc.
It will usually initiate the call. But it won't be long before call just drops, anywhere from 15-60 mins in. My calls are always long (>30mins), and I've yet to normally terminate a call. Of course I'm now getting asked what's going on.
On one occasion, the ER081 stayed on the drop-down and wouldn't go away until I rebooted phone (Edge).
IMHO this is a wonderful feature, but TMo is not ready for primetime on this one? Is it true Note 3's and older phones work fine?
buckwheat.phd said:
I'm getting frequent Er081's on my TMobile Note Edge. I've tried 3 different ISPs with speeds from 10m-500m, tweaked the QOS and COS on each, multiple wifi's etc.
It will usually initiate the call. But it won't be long before call just drops, anywhere from 15-60 mins in. My calls are always long (>30mins), and I've yet to normally terminate a call. Of course I'm now getting asked what's going on.
On one occasion, the ER081 stayed on the drop-down and wouldn't go away until I rebooted phone (Edge).
IMHO this is a wonderful feature, but TMo is not ready for primetime on this one? Is it true Note 3's and older phones work fine?
Click to expand...
Click to collapse
Note 4 works great. It might be an issue with edge. You might wanna ask in that forum. Also contact TMOBILE sure they will help
BAD ASS NOTE 4
buckwheat.phd said:
I'm getting frequent Er081's on my TMobile Note Edge. I've tried 3 different ISPs with speeds from 10m-500m, tweaked the QOS and COS on each, multiple wifi's etc.
It will usually initiate the call. But it won't be long before call just drops, anywhere from 15-60 mins in. My calls are always long (>30mins), and I've yet to normally terminate a call. Of course I'm now getting asked what's going on.
On one occasion, the ER081 stayed on the drop-down and wouldn't go away until I rebooted phone (Edge).
IMHO this is a wonderful feature, but TMo is not ready for primetime on this one? Is it true Note 3's and older phones work fine?
Click to expand...
Click to collapse
Disable WiFi calling, go to app and clear cache and data, power cycle phone, enable WiFi calling and try again.
Sent from my SM-N910T using XDA Free mobile app

[Q] Help! D5803 on AT&T - not receiving text messages or calls

My new xperia z3 compact (D5803) receives text messages and calls very intermittently. I'm on AT&T US, stock firmware.
- If I am using the phone (or have very recently used the phone, say within 30 seconds) then most calls and text messages come through fine (though not always).
- If I leave the phone alone for more than a few minutes, text messages or calls almost never come through - though occasionally I get a text message many hours after it was sent.
- If someone leaves a voicemail (because I didn't answer the phone, because the phone didn't ring!), I don't get a notification until I open the voicemail app and manually sync.
- I can make a phone call or send a text message with no problems (texts arrive immediately).
I don't have any of these problems when I put my SIM back into my HTC One M8.
I've tried the following to fix this:
- I went to the AT&T store and had them give me a new nano SIM. It made no difference; same issues.
- I factory reset my phone. It made no difference; same issues.
- I updated to the US version of the firmware. It made no difference; same issues.
- I put the SIM into a second, until that point unused, xperia z3. It made no difference; same issues.
Given that I have exactly the same issues after changing both the SIM and the phone, I can only think it must be some kind of compatibility issue with using AT&T on this phone - except I see that many other users of this forum are on AT&T and aren't having the same problems.
I do notice that I don't have the best signal in my house (usually 1-2 bars) so I'm wondering if maybe that could be related? As I say though, my HTC One works fine, as do all of the other AT&T phones in my house.
I think my next step will be to go and buy a T-Mobile prepaid SIM, just to see if that works, but does anyone have any thoughts or suggestions? All in all this is getting pretty frustrating, because I LOVE the phone, but right now it's unusable for me.
I would suggest reading this thread below. It should give you some tips on how to resolve your issue.
http://forum.xda-developers.com/z3-compact/help/att-apn-settings-lte-t2888644
Thank you for trying to help!
I probably should have added that link as one of the things I had already tried. To be specific, my APN settings are:
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC http: //mmsc.mobile.att.net
MMS proxy proxy.mobile.att.net
MMS port 80
MCC 310
MNC 410
Authentication Type None
APN type default,mms,supl,hipri
APN protocol IPv4
Bearer Unspecified
---------------------------------
I'm beginning to think it *must* be a signal issue, even though all the other phones in my house are fine. I have the "Advanced Signal Status" app installed, but I'm not sure what I should be looking for to see if there's anything fishy
Don't forget to download the Internet and MMS settings for your phone. You go into Settings > Wireless & Networks > More > Internet settings and download settings for Internet and MMS
Thanks again for the suggestions.
Sadly, it's still not working. I'm pretty sure I had already downloaded those settings, but I did it again anyway (seems you can just download over and over). I even reset the phone after that just to be sure, but the problem persists.
I have the same issue and I live in Sweden....
Im having the same issues. I restart the device and then come all the missed calls and missed txt messages.. i really hope theres a easy fix to this soon.
So, I switched my SIM from AT&T to T-Mobile and it fixed my issues. It seems that the either the poor AT&T reception in my house or some other strange incompatibility between the phone and AT&T was the problem.
Either way there's obviously some kind of issue with this phone - my guess is that when connectivity with the network is poor, the phone maybe times-out and gives up. Perhaps Sony will fix this with a firmware update at some point. In the mean time I would suggest that other folks having this issue maybe go to a part of town where they know reception is very good and see if the problems happen there.
So after 2 days of of testing, a new nano sim card and several phone calls to ATT I found temporary fix. Change your Network mode to WCDMA (preffered)/GSM. While this wont give you LTE it will prevent the missed phone calls and txt messages and at least you have HSPA+ . The problem is the LTE connection to ATT. The connection either drops and or prevents phone calls /texts from coming through the lower HSPA + or 2g bands... Not sure why this is. Hoping that when the Sony Store models start shipping on Nov 2nd they have the same issue and Sony will send out an update to fix the connection issue.
I'm on the US ATT network with the same problem as well. After trouble shooting I have come to agree with you. I'm really hoping Sony sends out an update.
Is this a problem on Tmobile USA with Z3 Compact also?
same issues!
I have two Z3 compacts (US version purchased direct from Sony) on my family plan with the same issues of not receiving SMS or calls when connected to wi-fi, and occasionally cannot receive SMS or calls when not connected to wi-fi either. I am always able to send texts and calls, and MMS/LTE always work (I am usually e-mailed when my phone isn't working and I get that right away). Whenever the phones aren't receiving calls, it rings once and goes to voicemail, which tips us off that the phones aren't working.
If you are also getting this problem, please get on AT&T chat and ask them to escalate/forward to their manager. We've got to get their attention. Additionally, I was told that "Okay so since the phone is unlocked our service is not guaranteed to work at full capacity, also I can not submit a case due to it is not an at&t phone. "
Yep - Same problem over here. AT&T in Northeast USA.
AT&T tried everything they could (resettings connection, etc) but again also said that it isn't guaranteed to work because it's an unlocked device.
I'm doing a system repair on the phone from the sony desktop application. Hoping it will fix, but not hopeful. Now sony says they want to have my phone in for testing. :/
I'm hoping they realize soon that this is a bug, and not a case of a broken phone.
Same problem here on cricket (AT&T) in Houston. Just disabled LTE. We'll see if that fixes it like it did for the other guy. Sony needs to get on this.
Sent from my Nexus 5
Not working MMS
Yep I have tried all of the above solutions and nothing is working. Changed APN multiple times, factory reset, switched SIM, called att, went into the store.
Like above, ATT came to the conclusion that unlocked phones are sometimes not compatible with their service and there's only so much trouble shooting they can do.
I have ATT in san francisco, and it's looking like I'm going to return the Xperia z3c. Shame it's a great phone besides the MMS issue.
aaronv20 said:
So after 2 days of of testing, a new nano sim card and several phone calls to ATT I found temporary fix. Change your Network mode to WCDMA (preffered)/GSM. While this wont give you LTE it will prevent the missed phone calls and txt messages and at least you have HSPA+ . The problem is the LTE connection to ATT. The connection either drops and or prevents phone calls /texts from coming through the lower HSPA + or 2g bands... Not sure why this is. Hoping that when the Sony Store models start shipping on Nov 2nd they have the same issue and Sony will send out an update to fix the connection issue.
Click to expand...
Click to collapse
Confirmed that this worked on my wife's z3c. She wont miss the LTE anyway since she is always near wifi and when she isn't 3G is definitely good enough. We streamed spotify for an hour today on country roads on her phone on 3G. No issues.
Sent from my Nexus 5
sorry to hear you guys are having such issues...
My z3 compact on att works flawlessly. I swapped my nano sim from a iphone 6 i was trying out straight into this.
Att did mention something about some settings they had to flip in the back end when i switched over to a nano sim from the sim i was using in my lg g3. If you guys loose all hope have a buddy with an iphone on att and use his imei and let att configure the sim for that phone then swap the sim into the z3...could work because i know it does for me
Same issues here. I have a new D5803 on Straight Talk (AT&T). I live in the mid Atlantic. It seems I don't receive calls/texts when I have 2 bars or less. Not sure about LTE vs. HSPA. I always have Wifi on so not sure if turning it off would make a difference. THIS IS A HUGE ISSUE! Hopefully a firmware update will save us. Has anyone contacted Sony?
mtilson said:
Same issues here. I have a new D5803 on Straight Talk (AT&T). I live in the mid Atlantic. It seems I don't receive calls/texts when I have 2 bars or less. Not sure about LTE vs. HSPA. I always have Wifi on so not sure if turning it off would make a difference. THIS IS A HUGE ISSUE! Hopefully a firmware update will save us. Has anyone contacted Sony?
Click to expand...
Click to collapse
Yes it does make a difference. Turn it off and everything should work.
Sent from my Nexus 5
sublimnl said:
Yes it does make a difference. Turn it off and everything should work.
Sent from my Nexus 5
Click to expand...
Click to collapse
Thanks for the info, but this isn't a viable solution! I shouldn't have to keep Wifi off to ensure I receive my calls/texts!

Verizon range extender problems

Anybody else on Verizon using a Verizon brand extender? A search found one other old thread but no definitive fix. The one proposed fix was to set the phone to 1x speed to force it out of hunting for towers outside and hope that 5.1 fixed the problem. I just got my phone from Verizon, it came out of the box with 5.1, so it would seem they didn't fix it. And I can't seem to find how to set it to 1x. Only from global to LTE. I'm dropping calls, having problems with texts, and Verizon support admitted it doesn't seem that my calls are going through the extender. They said the 6 should be perfectly capable of utilizing this extender. My note 3 worked perfect on it, and as far as I know the wife's note 4 does as well. I get the beep like it's calling through it, just not the signal. And this phone doesn't have a separate icon to show if it's connected, intermittent, or never recognizing it. Is this a known issue and I just didn't search properly? Running 5.1 LMY47E, bone stock. I warrantied the phone, same thing. So this thing is literally about an hour out of the box, no mods. Looking forward to rooting and running some roms but I'd like to know I've got any issues ironed out before hand. That way I'll know any future issues are rom related, not hardware
TIA
Unfortunately there is no fix unless Verizon decides to somehow upgrade the software/firmware of the extender. I'm surprised that Verizon tech support didn't inform you that the extender is not capable of utilizing 4G or enhanced network capability and can only function with 3G or less. I spent a bit of time on the phone with tech support and requested a problem ticket be raised to Verizon engineers to get a definitive answer -their response was that the extender can not do 4G but only 3G. The way I was able to get my Nexus 6 to successfully connect was to turn the "Enhanced 4G LTE Mode" off and then it was able to connect. This is not a nexus 6 issue only but from what I've seen is any phone that has that enhanced 4G setting - my wife's Iphone 6 is also unable to use the extender unless that phone capability to use 4G/LTE is turned off. Surprised you even got the beep as never of our phones get that connection beep unless the 4G/Enhanced switch is off.
I'm surprised (maybe not) that Verizon continues to sell the same Network Extender even though it no longer works with the new network capability or with phones that use that technology. Also brought that up with them during my call but of course that wasn't addressed. I also got no information as to any plans to upgrade the extender firmware but I'm assuming the lack of info speaks loudly.
Again one can never be assured of whether the information they provided me is accurate or no so if you find out differently please post back.
Also, my Nexus 6 is rooted and I have tried numerous ROMs and the ROM makes no difference so that isn't going to fix the issue.
Hopes this helps a bit.
chameo53 said:
Unfortunately there is no fix unless Verizon decides to somehow upgrade the software/firmware of the extender....
Again one can never be assured of whether the information they provided me is accurate or no so if you find out differently please post back.
Also, my Nexus 6 is rooted and I have tried numerous ROMs and the ROM makes no difference so that isn't going to fix the issue.
Hopes this helps a bit.
Click to expand...
Click to collapse
This helps a ton, thanks! I've always known that the extender didn't support anything above 3g, but it's never been an issue since my router took care of data and 3g was plenty for calls and texts. But I was thinking it had something to do with this... I haven't researched any of this new stuff about xlte or whatever it is but I know it seems the phones are changing to support some mods to the network. I haven't paid attention because my town is usually the last to receive this sort of technology. Big cities were going to 4g soon after we upgraded to 3g...
Can you tell me if the pic below is the menu that you used? I can't find any setting anywhere else that specifically says 3g, to try to force it into a mode that the extender understand.
you can dial #48 and the phone will tell you if you are under network extender coverage
The setting that needs to be disabled is on the same screen where you set the preferred network type (actually under the one you are displaying). It should be the next setting following the Preferred network type. It actually has a slider to turn on or off. Now, I'm not running stock but I believe it should be the same or very similar on stock.
Not on my phone or i'd try to include a screenshot. Hope this helps.
Edit : Added Screenshot
three west said:
you can dial #48 and the phone will tell you if you are under network extender coverage
Click to expand...
Click to collapse
Oh yeah, I forgot about that detail. The Verizon tech had me do this. It actually told me I was connecting through the extender. And the call seemed relatively clear. But I could hang up and immediately dial my voicemail or some other number, get the beep from connecting through the extender, but the call would be spotty and cutting out badly. And the tech was confused by this because it wasn't showing on his system that I was connecting through the extender even when the #48 said I was. Strange things going on with this...
chameo53 said:
The setting that needs to be disabled is on the same screen where you set the preferred network type (actually under the one you are displaying). It should be the next setting following the Preferred network type. It actually has a slider to turn on or off. Now, I'm not running stock but I believe it should be the same or very similar on stock.
Not on my phone or i'd try to include a screenshot. Hope this helps.
Click to expand...
Click to collapse
I'm not typing on my phone either, to include a screenshot. But I'm looking at it. The option directly under Preferred network type (which I have changed back to the default Global), is System Select. The subtext under that says "Change the CDMA roaming mode". And within the menu, the two options are "Home only" and "Automatic", of which Automatic is the default. Is this what I'm looking for?
Do you have Advanced Calling activated on you phone? Not sure if that is the issue or not but on your Verizon Wireless account you should see Advanced Calling (I believe that is what it is called) under "Manage Products. & Aps" - you should have the option to add it to your account. It is a free service but as I understand it you need to include it on your account for the phone to use Volte and it might not show up in settings if it is not an active service on the phone. Again, I'm only guessing here since I'm not on stock but I do believe I've had the option since I got the phone and I added HD calling right after I completed the pre-order.
chameo53 said:
Do you have Advanced Calling activated on you phone? Not sure if that is the issue or not but on your Verizon Wireless account you should see Advanced Calling (I believe that is what it is called) under "Manage Products. & Aps" - you should have the option to add it to your account. It is a free service but as I understand it you need to include it on your account for the phone to use Volte and it might not show up in settings if it is not an active service on the phone. Again, I'm only guessing here since I'm not on stock but I do believe I've had the option since I got the phone and I added HD calling right after I completed the pre-order.
Click to expand...
Click to collapse
I will log on in a bit and look. So are you suggesting that I enable it, or disable it? Is it believed that HAVING this feature is what is killing the link to the extender? Sorry for the dumb questions. Like I said, I've never had to look into the new tower technology before because I don't anticipate getting it in my area. I never thought about it still affecting my service anyway, even though we weren't getting it... figures.
For me to use my extender the 4G enhanced/LTE needs to be disabled. What I don't know is whether that setting shows up on the phone if the Advanced Calling isn't active on the account. If it doesn't show up there might be no way to disable it. I know it sounds somewhat illogical but again
I'm guessing to some extent given that I have it on mine and I really think it has been there from the start.
Sorry I can't be definite with it.

Question Data not connecting on ATT since "3G switchoff"

So on Monday ATT decided to deactivate my sim card because they believe my phone is incompatible with their network now. All my bars went to 0 with an x on it and I couldn't do anything on the phone. I went to an ATT store, got them to give me a new activated sim and I put it in my phone and all my bars came back.
My phone says VoLTE again too by the signal bar area. I also tested a text and it went through fine. I received a phone call and while it works fine, it sounds like junk now. Like it is no longer actually using VoLTE like it always has. My phone doesnt seem to have any data however, when it should have LTE just fine. I also cannot make any calls, even though it says VoLTE on the phone, it just re-routes to ATT customer service instead of going through with the call.
When I go into the network area in settings it says no IP address either. I looked and my APN is set to nxtgenphone, Preferred Network Type selected on LTE. Before ATT deactivated my sim card LTE has always worked fine, and LTE should still work fine. It is only the 3G network being shut down. Also given the fact I have the VoLTE icon the phone is apparently connecting somewhat to an LTE network.
So does anyone know how to fix settings to get data working again? Is it just an APN that needs to change? What is everyone else doing with the network shutdown and has anyone else had issues like this?
I had the exact same issue, your issue is in fact APN settings I'm having them as well. Try deleting your current APN and putting in a new one. Once I got a new sim my APN reset I could call but no data and no text. I have half of the APN information in place and have data and basic text, but once I input the MMS port the APN data disappears still trying to figure that out. Not sure if anything I typed is helpful but at least you know your not alone with a mi11 on ATT and it can work
EniGmA1987 said:
So on Monday ATT decided to deactivate my sim card because they believe my phone is incompatible with their network now. All my bars went to 0 with an x on it and I couldn't do anything on the phone. I went to an ATT store, got them to give me a new activated sim and I put it in my phone and all my bars came back.
My phone says VoLTE again too by the signal bar area. I also tested a text and it went through fine. However, my phone doesnt seem to have any data, when it should have LTE just fine. I also cannot make any calls, even though it says VoLTE on the phone, it just re-routes to ATT customer service instead of going through with the call.
When I go into the network area in settings it says no IP address either. I looked and my APN is set to nxtgenphone, Preferred Network Type selected on LTE. Before ATT deactivated my sim card LTE has always worked fine, and LTE should still work fine. It is only the 3G network being shut down. Also given the fact I have the VoLTE icon the phone is apparently connecting somewhat to an LTE network.
So does anyone know how to fix settings to get data working again? Is it just an APN that needs to change? What is everyone else doing with the network shutdown and has anyone else had issues like this?
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Click to collapse
moswen said:
I had the exact same issue, your issue is in fact APN settings I'm having them as well. Try deleting your current APN and putting in a new one. Once I got a new sim my APN reset I could call but no data and no text. I have half of the APN information in place and have data and basic text, but once I input the MMS port the APN data disappears still trying to figure that out. Not sure if anything I typed is helpful but at least you know your not alone with a mi11 on ATT and it can work
Click to expand...
Click to collapse
Thanks for the reply. I tried deleting the MMS port and also the proxy just now and data didnt come back. I will try searching around for more APN info for how phones are supposed to connect now and see if I can find anything.
It looks like from what I could find that it is due to an IMEI whitelist ATT has, blocking data connection on any device not in their whitelist. The solution seems to be to root the phone and change your IMEI to a whitelisted model.
While my phone is rooted my IMEI is not cloned I definitely would not share my IMEI with ATT. When I got my sim card yesterday I had the attendant activate but I did not provide my phone so he did not get the IMEI from my phone. If you got a sim and they input your IMEI that could be a problem possibly. Just a suggestion to try and get a sim activated at a store without your phone.
I had also heard that most ATT MVNOs were not having the device whitelist forced on them yet, so I went and tried 2 different ones yesterday. Both failed to get the phone working on their network with their sims.
Before I went through the hassle of rooting (and most likely losing payments) I tried ATT again anyway. I used their online customer service chat and the first person I chatted with said he could help me with the lte data problem and the IMEI issue. I was skeptical, but he actually did fix it all up. He just needed my sim ICCID and my phones IMEI1 and he submitted the info to their backend people for adding to their system. It took almost an hour and a half for it to get added, but overall it was a pretty painless process and I was browing the web most of the time while waiting in chat. I now have LTE data again, VoLTE again, and "5G" too (which ATT 5G is really just one or two more features than normal LTE and is no faster in speed and uses LTE data bands). I attached a screenshot showing the data and VoLTE working on my phone. The first signal is ATT, the second is TMobile (which has always worked and never had an issue, their 3G network shutdown is going on for another 4-5 months)
EniGmA1987 said:
I had also heard that most ATt MVNOs were not having the device whitelist forced on them yet, so I went and tried 2 different ones yesterday. Both failed to get the phone working on their network with their sims.
Before I went through the hassle of rotting (and most likely losing payments) I tried ATT again anyway. I used their online customer service chat and the first person I chatted with said he could help me with the lte data problem and the IMEI issue. I was skeptical, but he actually did fix it all up. He just needed my sim ICCID and my phones IMEI1 and he submitted the info to their backend people for adding to their system. It took almost an hour and a half for it to get added, but overall it was a pretty painless process and I was browing the web most of the time while waiting in chat. I now have LTE data again, VoLTE again, and "5G" too (which ATT 5G is really just one or two more features than normal LTE and is no faster in speed and uses LTE data bands). I attached a screenshot showing the data and VoLTE working on my phone. The first signal is ATT, the second is TMobile (which has always worked and never had an issue, their 3G network shutdown is going on for another 4-5 months)
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Click to collapse
Happy you are back up and running and I'm glad that you found someone at ATT to do the fairly easy work of getting your IMEI cleared. Lots of people have been worried about devices not working on ATT because of this whitelist issue glad to see there are workarounds just wish ATT didn't make it so convoluted.

Rog phone 3 mobile network issue

Hey so I've had my Rog phone 3 for over 3 months now, updated to A12. A constant problem has been the mobile network. Works fine for WhatsApp, but for normal browser (different browsers), other apps requiring internet, though the mobile data is on, it acts like it's offline, showing offline. I have to toggle on and off airplane mode for it to eventually work. Then if I turn off mobile data and turn back on, the cycle repeats. Please help
I'm having the same issue here too. The A12 Beta had choppy Network Connectivity that would just crumple my phone and not allow me to use Communications or Data, the random disconnects were absolutely infuriating, and after updating to the stable build, it was just not allowing Mobile Communication at all. (No Incoming or Outgoing calls)
I'm extremely happy about the downgrade FW however to allow me to revert to A11 that at least allows my phone to function as intended, even if I cannot enjoy the update that A12 has to offer.
Downgrading from A12 to A11 is an Upgrade. A12 has little to offer beyond making your OS look like a kindergarten app ...
Upgraded to A12 last night with the OTA. Data is fine but I cannot make calls, network immediately drops. no other issues with the phone though, 4g data works.5g never worked but volte did (At&t network) VoLte doesn't show up and I cannot find a place to enable it however there is a toggle for it in notifications. I spent about 3 hours at AT&T. So. here is info if it helps anyone. They told me that the phone is somehow locked to 3g calling even though the sim card shows LTE voice. After the update only calls dont work. The guy said he helped me before by provisioning an older sim card and using VoLte, however from what i understand The phone Does support more than 3g voice but if someone can correct me that would be cool. Also I found out if I put a sim card from an ATT iPhone it will connect at 5g (20mbps speed tested). I said well if I lose voice and have to figure out a wifi calling plan I would rather do it with 5G, however when they provisioned a 5G sim for me on my account it wont link above 4g+ (1-3mbps) same tower. So im at a loss. I know part of it is the new android 12 update, I know some of it is the stupid account provisioning and i know some is the phone. I DO NOT know what is what so any help would be awesome. If there is some way to add VoLte back to the phone in android 12, flash a new radio or something... but if someone can shed some light onto what is really happening so I know where I can press that would be slick. if the phone does communicate through something other than 3g voice then I can push back on At&t but i have kept this "less" a development platform and more a daily driver. I guess that has to now change LOL!
Andrologic said:
Downgrading from A12 to A11 is an Upgrade. A12 has little to offer beyond making your OS look like a kindergarten app ...
Click to expand...
Click to collapse
How can I downgrade. This new update is killing me
TheMightyElk said:
Upgraded to A12 last night with the OTA. Data is fine but I cannot make calls, network immediately drops. no other issues with the phone though, 4g data works.5g never worked but volte did (At&t network) VoLte doesn't show up and I cannot find a place to enable it however there is a toggle for it in notifications. I spent about 3 hours at AT&T. So. here is info if it helps anyone. They told me that the phone is somehow locked to 3g calling even though the sim card shows LTE voice. After the update only calls dont work. The guy said he helped me before by provisioning an older sim card and using VoLte, however from what i understand The phone Does support more than 3g voice but if someone can correct me that would be cool. Also I found out if I put a sim card from an ATT iPhone it will connect at 5g (20mbps speed tested). I said well if I lose voice and have to figure out a wifi calling plan I would rather do it with 5G, however when they provisioned a 5G sim for me on my account it wont link above 4g+ (1-3mbps) same tower. So im at a loss. I know part of it is the new android 12 update, I know some of it is the stupid account provisioning and i know some is the phone. I DO NOT know what is what so any help would be awesome. If there is some way to add VoLte back to the phone in android 12, flash a new radio or something... but if someone can shed some light onto what is really happening so I know where I can press that would be slick. if the phone does communicate through something other than 3g voice then I can push back on At&t but i have kept this "less" a development platform and more a daily driver. I guess that has to now change LOL!
Click to expand...
Click to collapse
Any developments on this? I am having the same issue.
Mine seems to lose connectivity after returning from do not disturb or when I'm inside with no signal for a while. I have to toggle airplane mode for sec, then I can use the phone. My wife texts me a few times a week, "It's going straight to voicemail again.", then I toggle it and call her. It will work fine for the rest of the day. Doesn't happen every time, though. Bizarre, though most of the time it's in the morning after returning from do not disturb mode. Kind of a hassle, but I'm coping. I'm going to start logging when it happens to see if any settings may be causing this.

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