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LTE stays on while in a call?

At first i thought it was volte but then i had my friend call me from his landline which obviously doesn't have volte and my LTE never dropped to regular 4g like on my lg g3 or galaxy s5. The data is a little slower during calls but i was curious if anyone else noticed this?

thats how its supposed to work

Verizon and AT&T restrict you to only using VoLTE when both parties are on VoLTE, but T-Mobile has no such restriction.

raptir said:
Verizon and AT&T restrict you to only using VoLTE when both parties are on VoLTE, but T-Mobile has no such restriction.
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interesting; I haven't seen that fact posted any where..

wase4711 said:
interesting; I haven't seen that fact posted any where..
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http://www.verizonwireless.com/news...on-wireless-volte-national-rollout-plans.html
http://www.fiercewireless.com/story...olte-calling-interoperability-2015/2014-11-03
They're working on making Verizon and AT&T devices able to make VoLTE calls to each other, but I have no idea why they have this restriction in the first place when T-Mobile devices are able to make VoLTE calls to landlines, Verizon/AT&T/Sprint customers, etc... already.

who'da thunk that Tmobile is doing something BETTER than the "big 2"!!!!

LTE always in calls even to a few I made overseas landlines.
However once it did drop to wcdma when I initiated a call.
Wonder why? All calls were at home location .
Sent from my SM-N910T using Tapatalk

Anyone have HD Voice (non-VoLTE) working?

I'm currently on Bell Mobility & HD Voice (non-VoLTE) calling has been around for a while now. It works on iPhones & Samsung devices, but not on my Nexus 6. Do I need to change something in build.prop to get it to work? Any ideas?
Before anyone says VoLTE is required, that's simply not true - I've had that feature for years on my iPhone 5, and yes, I know what AMR-WB sounds like.

I'm curious how you can get a non LTE network to make LTE calls. It doesn't make sense to me.
On verizon you have to enable it at the carrier AND on your phone
Sent from my Google N6 on VZ

DebianDog said:
I'm curious how you can get a non LTE network to make LTE calls. It doesn't make sense to me.
On verizon you have to enable it at the carrier AND on your phone
Sent from my Google N6 on VZ
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As I've said before, I am not talking about LTE/VoLTE calls. I'm talking about HD Voice on HSPA+ which is available on Bell Mobility & TELUS Mobility.

How to make wifi calling work on t mobile note 7 with AT&T simcard

Hello, im trying to use the wifi calling option but I get er-05 invalid sim. I have a note 7 T-Mobile unlocked for At&t.

Is the AT&T Sim activated with a Data plan. A active valid Sim on a account with a Data plan will be needed most likely for the native Wi-fi calling option on your carrier.

DeadPhoenix said:
Is the AT&T Sim activated with a Data plan. A active valid Sim on a account with a Data plan will be needed most likely for the native Wi-fi calling option on your carrier.
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Yes is activated I have the unlimited plan.

Abdiel1224 said:
Yes is activated I have the unlimited plan.
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Then it sounds to me like the T-Mobile Owner did not complete the Unlock with the supplied installed application or your Sim is bad.

DeadPhoenix said:
Then it sounds to me like the T-Mobile Owner did not complete the Unlock with the supplied installed application or your Sim is bad.
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That might not be true
Abdiel1224 said:
Hello, im trying to use the wifi calling option but I get er-05 invalid sim. I have a note 7 T-Mobile unlocked for At&t.
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At&t wifi calling is not only based on sim their framework is baked into their ROM you might not be able to get AT&T wifi calling on a T-Mobile note 7 as T-Mobile phone is tweaked for T-Mobiles wifi calling
Sent from my Nexus 6P using Tapatalk

naruto.ninjakid said:
That might not be true
At&t wifi calling is not only based on sim their framework is baked into their ROM you might not be able to get AT&T wifi calling on a T-Mobile note 7 as T-Mobile phone is tweaked for T-Mobiles wifi calling
Sent from my Nexus 6P using Tapatalk
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Yeah thats what Isaw in another post. I have to use an At&T ROM in order to make it work.

Abdiel1224 said:
Yeah thats what Isaw in another post. I have to use an At&T ROM in order to make it work.
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Yeah sorry man. I was looking to get T-Mobile WiFi calling working on the International version
Sent from my Nexus 6P using Tapatalk

Does the unlocked version FULLY work on Verizon?

I was looking to get the new HTC u11 which for Verizon can only be done unlocked but there are a ton of people having a ton of issues on Verizon with the unlocked model: IMEI not accepted on Verizon, missing bands, no cdma (so no 3g or 1x), missing visual voicemail, no immediate HD calling, no Wi-Fi calling, notification issues and Verizon essentially saying the phone was never qualified on their Network so support is limited and so will future updates to the phone like getting Wi-Fi calling working. So that option is dead to me as getting an unlocked phone without carrier bloat is great but not great if it's having this many issues.
So... I'm curious if the same thing happens with the unlocked version of the S8 on Verizon? Or is it 100% functioning just minus the carrier bloat?

Answer = no
No CDMA radio so no 3G or 1x in remote or spotty places. A tech told me.

Lock-N-Load said:
Answer = no
No CDMA radio so no 3G or 1x in remote or spotty places. A tech told me.
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According to Samsung.com it will work on Verizon. However, I haven't found if it fully works.

Works fine on VZW all s8's are using the same hardware, only difference is the customized carrier software.

txaggies07 said:
According to Samsung.com it will work on Verizon. However, I haven't found if it fully works.
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Just like HTC - it will work to a limited degree. No 3g no 1x as no cdma radio. I need that ability so I passed.

Lock-N-Load said:
Just like HTC - it will work to a limited degree. No 3g no 1x as no cdma radio. I need that ability so I passed.
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The S8 has a CDMA radio. It is the same hardware that Verizon and Sprint use for the carrier model.

I'M on the unlocked model, notice my phone was using 3g so yes it can. For some reason my father in law was not able to add a line to our plan because my phone was marked on the account as incompatible. Was told to go get a new sim card and everything was working before and after so I'm not sure? The tech wasn't sure why I had to get a new SIM. I had popped it out of my iPhone 7 and it worked immediately on my s8. I have not found the wifi calling feature though.

Does UDP native tethering work our of the box on the unlocked model on Verizon? How about HD voice? Both of these work on my Moto X Pure, even though is is not Verizon certified.

Biff Rosco said:
Does UDP native tethering work our of the box on the unlocked model on Verizon? How about HD voice? Both of these work on my Moto X Pure, even though is is not Verizon certified.
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Yes works great. I found a Cspire s8 plus that was Google locked. I unlocked it then sim unlocked it and flashed the U firmware. Only thing is no option for video calling and I haven't tried wifi calling but everything else works. I'm now using it on Verizon. Had the phone a month now.
---------- Post added at 11:08 PM ---------- Previous post was at 11:07 PM ----------
Biff Rosco said:
Does UDP native tethering work our of the box on the unlocked model on Verizon? How about HD voice? Both of these work on my Moto X Pure, even though is is not Verizon certified.
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txaggies07 said:
The S8 has a CDMA radio. It is the same hardware that Verizon and Sprint use for the carrier model.
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Thank you for bringing him into 2017 lol

txaggies07 said:
The S8 has a CDMA radio. It is the same hardware that Verizon and Sprint use for the carrier model.
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Works fine with 3g...my office sux and my unlocked works in 3g on verizon just fine.
Best part about unlocked - no tether subscription check, so I can keep tethering my old unlimited data plan without paying the tether fee
From what I can tell, only visual voicemail is not working on verizon, but google voice forwarding is just as good. Plus it was like this on the 6p until it upgraded to 7.1 at which time it worked natively, so the S8 might eventually get the same treatment.
---------- Post added at 09:04 PM ---------- Previous post was at 09:04 PM ----------
Biff Rosco said:
Does UDP native tethering work our of the box on the unlocked model on Verizon? How about HD voice? Both of these work on my Moto X Pure, even though is is not Verizon certified.
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Yes and Yes...just like my 6p

gs05 said:
Works fine with 3g...my office sux and my unlocked works in 3g on verizon just fine.
Best part about unlocked - no tether subscription check, so I can keep tethering my old unlimited data plan without paying the tether fee
From what I can tell, only visual voicemail is not working on verizon, but google voice forwarding is just as good. Plus it was like this on the 6p until it upgraded to 7.1 at which time it worked natively, so the S8 might eventually get the same treatment.
---------- Post added at 09:04 PM ---------- Previous post was at 09:04 PM ----------
Yes and Yes...just like my 6p
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How do you properly set up Google Voice so that you can use it as Visual Voicemail. I tried setting it up via the old Legacy Google Voice link through PC browser. Thought I had everything working, but not sure. I may have enabled an extra step, as everytime I dial out, it hangs up and auto redials really quickly. Like it routes all outgoing calls through GV too. Sometimes it redials the same number, sometimes it's a completely random number.

lickwid said:
How do you properly set up Google Voice so that you can use it as Visual Voicemail. I tried setting it up via the old Legacy Google Voice link through PC browser. Thought I had everything working, but not sure. I may have enabled an extra step, as everytime I dial out, it hangs up and auto redials really quickly. Like it routes all outgoing calls through GV too. Sometimes it redials the same number, sometimes it's a completely random number.
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They had me put in some crazy string into the phone. But make sure google chat is unchecked on the legacy site. Then click the little link for voicemail forwarding. Go through the prompts and it works fine. I had to put do not disturb so it doesnt ring through to my voice number, but it seems to working just fine. Make sure the setting on the non legacy site are all unchecked too

So far the only thing that doesn't appear to work is WiFi calling. VoLTE works but there is no indication of HD Voice on the handset.
vincey2kr1 said:
I'M on the unlocked model, notice my phone was using 3g so yes it can. For some reason my father in law was not able to add a line to our plan because my phone was marked on the account as incompatible. Was told to go get a new sim card and everything was working before and after so I'm not sure? The tech wasn't sure why I had to get a new SIM. I had popped it out of my iPhone 7 and it worked immediately on my s8. I have not found the wifi calling feature though.
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Yes, this is because the IMEI is not "in the system" so you cannot use the phone to activate a new SIM unless you have the IMEI added to the VZW database. The solution to this is to active the SIM in a VZW handset and then put that SIM into the S8.

vincey2kr1 said:
I'M on the unlocked model, notice my phone was using 3g so yes it can. For some reason my father in law was not able to add a line to our plan because my phone was marked on the account as incompatible. Was told to go get a new sim card and everything was working before and after so I'm not sure? The tech wasn't sure why I had to get a new SIM. I had popped it out of my iPhone 7 and it worked immediately on my s8. I have not found the wifi calling feature though.
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Do you see verizon wifi callin gone sm-g950u1

verizon wifi calling is only available in the VZW specific firmware for the device. i purchased an unlocked S8 and because i needed wifi calling, i had to flash the VZW specific firmware.

knightsfury said:
verizon wifi calling is only available in the VZW specific firmware for the device. i purchased an unlocked S8 and because i needed wifi calling, i had to flash the VZW specific firmware.
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Hi knightsfury - Were you able to pull off getting the VZW firmware on your unlocked s8? I need the wifi calling/video calling, as well. have been trying to find a thread which explains this. Would you be able point in the right direction? Thanks!

What is the model number for the unlocked variant that works on Verizon? Can anyone link me to where to buy one?

r34med said:
Hi knightsfury - Were you able to pull off getting the VZW firmware on your unlocked s8? I need the wifi calling/video calling, as well. have been trying to find a thread which explains this. Would you be able point in the right direction? Thanks!
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yes i had no problems. in fact, i did this with 2 different new unlocked S8's (mine and my wife's). i followed the threads for flashing firmware in the guides section: https://forum.xda-developers.com/galaxy-s8/how-to

knightsfury said:
yes i had no problems. in fact, i did this with 2 different new unlocked S8's (mine and my wife's). i followed the threads for flashing firmware in the guides section: https://forum.xda-developers.com/galaxy-s8/how-to
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Great! Thanks for letting me know. I got it to work as well - I have HD & Wireless calling working, but still waiting on video calling because it is blocked as a service on our account from when we activated the phones unlocked. However, a CS rep told me they would work with higher tier tech support to see if the block can be removed. We will see...
Thanks again!

Lock-N-Load said:
Answer = no
No CDMA radio so no 3G or 1x in remote or spotty places. A tech told me.
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Confirmed... when I am out of LTE coverage areas there is no 2x or 3x , only 1x voice. In practice this means no MMS (2x), or any other data. No group texts, fun. You can still make and receive phone calls and SMS. This kinda sucks.
Purchased at : B&H Photo Video
Settings -> About Phone :
Model: SM-G950U1
Baseband : G950U1EU1AQG2
Build: NRD90M.G950U1UEU1AQG2
If you look at available firmware for the SM-G950U1 : http://updato.com/firmware-archive-select-model?q=SM-G950U1&exact=1&r=&v=&rpp=50 there are Verizon-specific ones. I'm going to go give one of those a try.
(https://forum.xda-developers.com/galaxy-s8/how-to/official-stock-firmware-update-odin-t3598172) (https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817) and report back. Unfortunately this means wiping the phone and dealing with Verizon bloatware... but that seems to be the cost for getting 3G back.
-m

unlocked on Verizon

I'm not really new to this. I would always buy the phones, then root them when root was available. My question is if I buy the unlocked version and have it on Verizon, does anyone know what features won't work? Like I believe wifi calling on tmobile won't. But what about Verizon?

I THINK similarly, HD calling and Wifi calling won't work. I remember this from other discussions of unlocked Galaxy devices on Verizon.

The_Law2 said:
I THINK similarly, HD calling and Wifi calling won't work. I remember this from other discussions of unlocked Galaxy devices on Verizon.
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Ok, thanks.... That is the problem I'm having cause I don't know about that part. Like I said, I normally just buy the phones then root them when root is available, but the s8 never got it or it took so long I didn't worry about it anymore. But I'm going overseas soon and would like to just swap sims and not worry about international charges

HD calling and volte should work. wifi calling a visual voicemail won't. check Samsungs page for compatibility.
my pixel 2 unlocked has EVERYTHING working on Verizon tho. dunno why.
Sent from my Pixel 2 using Tapatalk

Features you lose with unlocked phone on verizon network.
Visual Voicemail (VVM)
LTE Video Calling
Enhanced Address Book
VoWiFi (WiFi calling)
Family Base
Family Locator

that's worth it. no big deal except maybe wifi calling.
Sent from my Pixel 2 using Tapatalk

no way, cellular trash store will offer you phone with unlocked bootloader.

wormyMNT said:
I'm not really new to this. I would always buy the phones, then root them when root was available. My question is if I buy the unlocked version and have it on Verizon, does anyone know what features won't work? Like I believe wifi calling on tmobile won't. But what about Verizon?
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I have an unlocked S9+ on Verizon prepaid. Everything works fine including VoLTE and WiFi Calling. The only thing that doesn't is Visual Voicemail, but that's because I'm on prepaid. I'm sure the S10 will be the same.

guyd said:
I have an unlocked S9+ on Verizon prepaid. Everything works fine including VoLTE and WiFi Calling. The only thing that doesn't is Visual Voicemail, but that's because I'm on prepaid. I'm sure the S10 will be the same.
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Does Video Calling work on the unlocked s9+ on Verizon?

My unlocked note 9 on Verizon didn't have any features except HD calling and VoLTE. I worked with Verizon tech support forever, they couldn't figure it out. They indicated it was a Samsung issue. Samsung said it was a Verizon issue. I sold it on swappa then got a Verizon branded one because I need WiFi calling and texting.
I really hope my unlocked S10 plus isn't the same.
Sent from my Pixel 3 XL using Tapatalk

skinnytoo2 said:
My unlocked note 9 on Verizon didn't have any features except HD calling and VoLTE. I worked with Verizon tech support forever, they couldn't figure it out. They indicated it was a Samsung issue. Samsung said it was a Verizon issue. I sold it on swappa then got a Verizon branded one because I need WiFi calling and texting.
I really hope my unlocked S10 plus isn't the same.
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You could've flashed the VZ fw onto the U1. I converted my TMO Note to U1/XAA for better battery. Knox isn't tripped by signed packages.

equake said:
Does Video Calling work on the unlocked s9+ on Verizon?
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I think Video Calling and Visual Voice Mail are for Post-Paid accounts only. I'm on Pre-Paid.
Plus I can use one of several other apps to video call, so I don't miss it. VoLTE and WiFi calling work great.

I can confirm that Wi-Fi calling IS indeed working on my unlocked S10+ on Verizon. Imagine that! The only thing I'm missing is Verizon's native video calling but that feature is so useless that it's not even worth mentioning.
Also, this thread is helpful describing all the features that work on Verizon:
https://us.community.samsung.com/t5/Galaxy-S10/Unlocked-Galaxy-S10-and-Verizon-Functionality/td-p/464884