Database Develop

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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Click to collapse
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

Which international version is best for tmobile?

I was thinking about getting an international phone but there are a few versions N930F/FD/S/L/K . Which would be most compatible. As I understand it, the downside is missing some of the bands for data. 3g is the problem I think. Can anyone confirm this or input any additional issues.

Bubba Fett said:
I was thinking about getting an international phone but there are a few versions N930F/FD/S/L/K . Which would be most compatible. As I understand it, the downside is missing some of the bands for data. 3g is the problem I think. Can anyone confirm this or input any additional issues.
Click to expand...
Click to collapse
N930F/FD will definitely work on T-Mobile...
I think WiFi Calling and VoLTE won't work and you might miss a band or two but it will work just fine.

HNIC215 said:
N930F/FD will definitely work on T-Mobile...
I think WiFi Calling and VoLTE won't work and you might miss a band or two but it will work just fine.
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Click to collapse
Damn, I forgot about wifi calling. Thats one of the last reasons left i like tmobile. Thanks

Bubba Fett said:
Damn, I forgot about wifi calling. Thats one of the last reasons left i like tmobile. Thanks
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Click to collapse
will you be able to keep the speed at 4g?

Isn't WiFi Calling a built-in feature of Android 6, now? I use it on my Nexus 6P and it has no T Mobile software at all.

Heinous said:
Isn't WiFi Calling a built-in feature of Android 6, now? I use it on my Nexus 6P and it has no T Mobile software at all.
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Click to collapse
Yes, works with Hangouts on my nexus6p...

van131 said:
will you be able to keep the speed at 4g?
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Click to collapse
I believe 4g is ok. The some bands for 3g have reduced speeds.

N930F has all Tmo bands. WIfi calling and VOLTE will not work with stock rom, but will if/when custom roms come out.

Did anyone go this route? I see couple for sell on ebay.
suzook said:
N930F has all Tmo bands. WIfi calling and VOLTE will not work with stock rom, but will if/when custom roms come out.
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Click to collapse
I dont' really care for wifi calling as I can forward my calls to Google Hangout/Voice.
can you clarify the need for VOLTE?

How to activate google hangout/voice I never used that feature since I have a note 3 and voice and data simultaneously is always been available thanks
Sent from my SM-N900P using XDA-Developers mobile app

suzook said:
N930F has all Tmo bands. WIfi calling and VOLTE will not work with stock rom, but will if/when custom roms come out.
Click to expand...
Click to collapse
Very odd as both worked in the S7 FD version I had for a bit. The requirement isn't bands but that the TMO sim has to be in sim1 not sim2. If it's in sim1 then both work. Also, VoLTE is hidden and always on if supported.

[Q] Is this normal ? 4G to 3G to H+ when calling?

I have a unlocked s10+ with a ATT sim card, when I try to make a call, the HTE network symbol changes to a lower speed and eventually H (edge), however the call does go through?
Just curious if anyone else was seeing this ?
Thanks in advance!

Its normal if you have VoLTE disabled or if it isn't available. You can check in settings > connections > mobile networks and check if you have VoLTE enabled.

Don't see it under those options, thanks for the reply !

zerokewl22 said:
Don't see it under those options, thanks for the reply !
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Maybe your carrier doesn't support VoLTE yet, are u from the US?
This is how it looks on my phone.

hektsepulveda said:
Maybe your carrier doesn't support VoLTE yet, are u from the US?
This is how it looks on my phone.
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Click to collapse
Yes I am in the US, carrier does support VoLTE, however I have an unlocked device ? maybe that might be why I cant see it ?

zerokewl22 said:
Yes I am in the US, carrier does support VoLTE, however I have an unlocked device ? maybe that might be why I cant see it ?
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Ask your provider to re-provision VoLTE setting to your SIM. Also sometimes you may have to wait for an update for he settings to get applied. Happened to me on my S7. Carrier had activated VoLTE but phone s/w didn't support it. After an update, everything worked.

data is limited to H or 3G (if you are lucky) during calls
thats normal as the phone is using bandwidth for voice calls and cannot offer same data speeds
4G is all about data transfers so you would never really make a call over 4G it will always be over H

ATT doesn't allow VoLTE on the unlocked version. You will need to flash the carrier rom to enable it.

Appreciate everyone's feedback, I spoke to my carrier, and they (Level 2 Tech.) claimed that they (ATT) and Samsung were working on a device performance update, but were not sure of the release time, I will see if they can address this issue, else will need to reflash with carrier rom

tim2london said:
data is limited to H or 3G (if you are lucky) during calls
thats normal as the phone is using bandwidth for voice calls and cannot offer same data speeds
4G is all about data transfers so you would never really make a call over 4G it will always be over H
Click to expand...
Click to collapse
Wrong
lazard said:
ATT doesn't allow VoLTE on the unlocked version. You will need to flash the carrier rom to enable it.
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Click to collapse
Wrong
I recently switched to ATT and I have VoLTE on my S10e unlocked exynos. Had it on T-mobile too. I have a VoLTE switch under Connections>Mobile Networks. Snapdragon maybe different, but it definitely works on a stock unlocked device.

Chronzy said:
Wrong
Wrong
I recently switched to ATT and I have VoLTE on my S10e unlocked exynos. Had it on T-mobile too. I have a VoLTE switch under Connections>Mobile Networks. Snapdragon maybe different, but it definitely works on a stock unlocked device.
Click to expand...
Click to collapse
Maybe read and try to understand before jumping
YOU CANNOT HAVE 4G connectiond during voice calls

tim2london said:
Maybe read and try to understand before jumping
YOU CANNOT HAVE 4G connectiond during voice calls
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Click to collapse
I have LTE during voice calls. Your phone/carrier may not give you this option, but others have it.

At&T doesn't fully support unlocked phone learned that the hard way when i bought my 1st unlock note 8. Internet was slow same signal your getting H+ no wifi calling it was a mess returned it and bought an At&t note.

Chronzy said:
Wrong
Wrong
I recently switched to ATT and I have VoLTE on my S10e unlocked exynos. Had it on T-mobile too. I have a VoLTE switch under Connections>Mobile Networks. Snapdragon maybe different, but it definitely works on a stock unlocked device.
Click to expand...
Click to collapse
Did you get your s10e exynos from that ebay deal?

Chronzy said:
Wrong
Wrong
I recently switched to ATT and I have VoLTE on my S10e unlocked exynos. Had it on T-mobile too. I have a VoLTE switch under Connections>Mobile Networks. Snapdragon maybe different, but it definitely works on a stock unlocked device.
Click to expand...
Click to collapse
Curious, what made you go for a Exynos phone? I thought they were inferior to the SD versions and LTE bands missing for the USA

skyrocketeer said:
Did you get your s10e exynos from that ebay deal?
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Click to collapse
I got it from eBay yes. Not sure exactly which deal you're talking about.
Micky 22 said:
Curious, what made you go for a Exynos phone? I thought they were inferior to the SD versions and LTE bands missing for the USA
Click to expand...
Click to collapse
Future custom roms, root. The exynos version isn't missing any LTE bands that I know of. I get great coverage and speed. I don't know how they are inferior to SD. Performance and battery life are good.

Unlocked U1 devices will not get VoLTE or VoWifi with AT&T. Some have had luck flashing the AT&T firmware and CSC on prior generations, but there wasn't a guaranteed way to make this work.
If you need these features, youre best off buying the AT&T branded version, or buying an international phone that enables VoLTE without requiring carrier validation. (Which will likely work)

tim2london said:
Maybe read and try to understand before jumping
YOU CANNOT HAVE 4G connectiond during voice calls
Click to expand...
Click to collapse
If your provider supports VoLTE, then you can as voice is transmitted as VOIP call via LTE network. You should see VoLTE icon next to 4G icon if your provider supports it and is provisioned to your SIM card.

VOLTE in US

I was apprehensive to purchase the P30 Pro because I had some troubling experiance with the Mate 20 Pro in the US on T-Mobile with calls and texts. To my surpise I inserted my sim into the P30 Pro and service was great. Even more surprising when I make calls I still have LTE and it connects in 1-2 seconds after dialing. Now I know I dont have a toggle for VOLTE or WIFI calling but keeping data during a call and connecting very fast was never something that happened to me with the Mate 20 Pro. Is anyone else in the US having a similair experiance?

Poison423 said:
I was apprehensive to purchase the P30 Pro because I had some troubling experiance with the Mate 20 Pro in the US on T-Mobile with calls and texts. To my surpise I inserted my sim into the P30 Pro and service was great. Even more surprising when I make calls I still have LTE and it connects in 1-2 seconds after dialing. Now I know I dont have a toggle for VOLTE or WIFI calling but keeping data during a call and connecting very fast was never something that happened to me with the Mate 20 Pro. Is anyone else in the US having a similair experiance?
Click to expand...
Click to collapse
VOLTE is on based on service menu by default. I feel call quality is great with the P30 Pro... I even like the screen as the phone speaker as well. I had the Mate 20 Pro too... didn't have some of the issues you had since I got it later and probably they address most of everything by the time I got it. I do wish T-Mobile would allow WIFI Calling on it... overseas T-Mobile has it enabled... but unfortunately we do not and there's no setting to do so.
Stupid politics to protect Apple is the underlying cause of the whole "Huawei is spying on you for the Chinese Government Conspiracy" Yeah, someone will say there's proof, and I'm like... well, they make great phones and I'm sure no one in China give ZERO F's about my Facebooking, search history, etc. or whatever someone thinks they are spying on... All I know is I hate having to jump through hoops to buy the phones and wish I could just roll down to a best buy or legit on Amazon, buy one and have all the features supported. I mean google, microsoft, apple, etc. all "spy" on their customers... just because I sign an agreement I guess its ok. :silly:
Spying on and telling you in a tiny word 10 page document ok.. :good:
Spying on and not telling you, not ok.. I guess.

I saw some one said intall Tmobile digits in his mate pro 20, then get wifi calling works. However, I cannot got that works on my son's mate 20. I still not make decision to buy p30 pro. Tmobile's signal too weak in my home, I realy on wifi calling too much.

cxterm said:
I saw some one said intall Tmobile digits in his mate pro 20, then get wifi calling works. However, I cannot got that works on my son's mate 20. I still not make decision to buy p30 pro. Tmobile's signal too weak in my home, I realy on wifi calling too much.
Click to expand...
Click to collapse
I got poor cell reception here as well so wifi calling helps when using T-Mobile. In Irvine the city does not let telecom providers install Cell Towers so that they force you to buy and pay $100 per moth via COX Cable of which they have a monopoly over. A pretty corrupt city in that sense. If everyone has good reception then people will not pay the extra $100 per month to get internet at their house. The only place you have good coverage is if you live nearby freeway as they are required by law to have cell towers alongside the freeway. Every where in the city you have 1 bar as require by law to make a call in the event of an emergency.

Poison423 said:
I was apprehensive to purchase the P30 Pro because I had some troubling experiance with the Mate 20 Pro in the US on T-Mobile with calls and texts. To my surpise I inserted my sim into the P30 Pro and service was great. Even more surprising when I make calls I still have LTE and it connects in 1-2 seconds after dialing. Now I know I dont have a toggle for VOLTE or WIFI calling but keeping data during a call and connecting very fast was never something that happened to me with the Mate 20 Pro. Is anyone else in the US having a similair experiance?
Click to expand...
Click to collapse
Which version of the phone do you have. Only thing holding me back from buying this phone is knowing whether it has VOLTE support for T-mobile. I can't use the phone without it.

aim1999x said:
Which version of the phone do you have. Only thing holding me back from buying this phone is knowing whether it has VOLTE support for T-mobile. I can't use the phone without it.
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Click to collapse
desiregeek said:
I got poor cell reception here as well so wifi calling helps when using T-Mobile. In Irvine the city does not let telecom providers install Cell Towers so that they force you to buy and pay $100 per moth via COX Cable of which they have a monopoly over. A pretty corrupt city in that sense. If everyone has good reception then people will not pay the extra $100 per month to get internet at their house. The only place you have good coverage is if you live nearby freeway as they are required by law to have cell towers alongside the freeway. Every where in the city you have 1 bar as require by law to make a call in the event of an emergency.
Click to expand...
Click to collapse
cxterm said:
I saw some one said intall Tmobile digits in his mate pro 20, then get wifi calling works. However, I cannot got that works on my son's mate 20. I still not make decision to buy p30 pro. Tmobile's signal too weak in my home, I realy on wifi calling too much.
Click to expand...
Click to collapse
Poison423 said:
I was apprehensive to purchase the P30 Pro because I had some troubling experiance with the Mate 20 Pro in the US on T-Mobile with calls and texts. To my surpise I inserted my sim into the P30 Pro and service was great. Even more surprising when I make calls I still have LTE and it connects in 1-2 seconds after dialing. Now I know I dont have a toggle for VOLTE or WIFI calling but keeping data during a call and connecting very fast was never something that happened to me with the Mate 20 Pro. Is anyone else in the US having a similair experiance?
Click to expand...
Click to collapse
So I started another thread to find out some info from those people with the Canadian variant in the US if there's greater compatibility with TMobile & ATT. What I do know is that the Canadian version VOG-L04 comes in 3 colors: Black, Aurora & Breathing Crystal. You can only get 8GB RAM if you get 256GB storage option. This is also the Latin American Version as well but have not heard anyone getting from mexico or other South / Central American countries yet.
It has Band 66 compatibility making it better especially for ATT folks.
Also, reported but not confirmed with screen captures, etc. is that it is 100% wifi calling enabled. Once again, this is reported but not confirmed. Same would be true for VoLTE
As for the digits workaround, you need to actually use digits app to make calls meaning getting a separate digits number for your phone ($10 per month) and using it to call it through the app connected to wifi. Similar to google voice workaround.

mahst68 said:
So I started another thread to find out some info from those people with the Canadian variant in the US if there's greater compatibility with TMobile & ATT. What I do know is that the Canadian version VOG-L04 comes in 3 colors: Black, Aurora & Breathing Crystal. You can only get 8GB RAM if you get 256GB storage option. This is also the Latin American Version as well but have not heard anyone getting from mexico or other South / Central American countries yet.
It has Band 66 compatibility making it better especially for ATT folks.
Also, reported but not confirmed with screen captures, etc. is that it is 100% wifi calling enabled. Once again, this is reported but not confirmed. Same would be true for VoLTE
As for the digits workaround, you need to actually use digits app to make calls meaning getting a separate digits number for your phone ($10 per month) and using it to call it through the app connected to wifi. Similar to google voice workaround.
Click to expand...
Click to collapse
Which Amazon would that be? I may send mine back if wifi calling works on a different version. I currently have the German version and wifi calling is not preset in the setting per se. If use a shortcut maker i do get the option for wifi calling.

danon.brown said:
Which Amazon would that be? I may send mine back if wifi calling works on a different version. I currently have the German version and wifi calling is not preset in the setting per se. If use a shortcut maker i do get the option for wifi calling.
Click to expand...
Click to collapse
Amazon.ca but haven't see the phone available yet... definitely not the L04... With the short cut and it enabled does wifi calling work actually? I don't believe that it provisions even if enabled. VoLTE maybe a different story although I still have to check to see if it isn't on with the network info app. I'm at work so until I'm done I don't have my phone to check anything but will try later..
what shortcut maker do you use?
Still hoping that someone with a L04 can confirm all these items as well!

mahst68 said:
Amazon.ca but haven't see the phone available yet... definitely not the L04... With the short cut and it enabled does wifi calling work actually? I don't believe that it provisions even if enabled. VoLTE maybe a different story although I still have to check to see if it isn't on with the network info app. I'm at work so until I'm done I don't have my phone to check anything but will try later..
what shortcut maker do you use?
Still hoping that someone with a L04 can confirm all these items as well!
Click to expand...
Click to collapse
IDK if it's actually working. I guess I could try to make a call in airplane mode. Quick shortcut. Any of them would probably work.
There is one option that requires elevation. I may try it on my old mate 9 since that is rootable.

danon.brown said:
IDK if it's actually working. I guess I could try to make a call in airplane mode. Quick shortcut. Any of them would probably work.
There is one option that requires elevation. I may try it on my old mate 9 since that is rootable.
Click to expand...
Click to collapse
can you use network cell info app from wilysis and see what it says for your sim? should have a spot where it may say VoLTE either yes or no and same with wifi calling

mahst68 said:
can you use network cell info app from wilysis and see what it says for your sim? should have a spot where it may say VoLTE either yes or no and same with wifi calling
Click to expand...
Click to collapse
It seems wifi calling is off. VoLTE is working.

danon.brown said:
It seems wifi calling is off. VoLTE is working.
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Click to collapse
well at least that solves that VoLTE works... but wifi calling still does not without provision from tmobile... guess digits or google voice workaround is best bet for that.

mahst68 said:
well at least that solves that VoLTE works... but wifi calling still does not without provision from tmobile... guess digits or google voice workaround is best bet for that.
Click to expand...
Click to collapse
I wouldn't trust network cell info for an accurate diagnosis of wifi calling availability. It says its not available to me but it clearly is and works rather well (3 UK network)
HTH

To get WiFi calling working on Xiaomi devices you have to enter *#*#86583#*#*
Is there something similar for the Huawei P30 Pro?

TLJester said:
To get WiFi calling working on Xiaomi devices you have to enter *#*#86583#*#*
Is there something similar for the Huawei P30 Pro?
Click to expand...
Click to collapse
WiFi calling is definitely on the phone. Just need a way to make the settings stick.

mahst68 said:
VOLTE is on based on service menu by default. I feel call quality is great with the P30 Pro... I even like the screen as the phone speaker as well. I had the Mate 20 Pro too... didn't have some of the issues you had since I got it later and probably they address most of everything by the time I got it. I do wish T-Mobile would allow WIFI Calling on it... overseas T-Mobile has it enabled... but unfortunately we do not and there's no setting to do so.
Stupid politics to protect Apple is the underlying cause of the whole "Huawei is spying on you for the Chinese Government Conspiracy" Yeah, someone will say there's proof, and I'm like... well, they make great phones and I'm sure no one in China give ZERO F's about my Facebooking, search history, etc. or whatever someone thinks they are spying on... All I know is I hate having to jump through hoops to buy the phones and wish I could just roll down to a best buy or legit on Amazon, buy one and have all the features supported. I mean google, microsoft, apple, etc. all "spy" on their customers... just because I sign an agreement I guess its ok. :silly:
Spying on and telling you in a tiny word 10 page document ok.. :good:
Spying on and not telling you, not ok.. I guess.
Click to expand...
Click to collapse
My phone arrives tomorrow. Are you happy with the overall coverage you are getting on T-Mobile in the U.S with the P30 Pro?
Sent from my SM-G975U1 using Tapatalk

I just pre-ordered through b&h here in the USA using tmo. Should be here in may (899 price for 256/8gb) vog-L29 model. Can't wait glad volte works

EricMartinSoCal said:
My phone arrives tomorrow. Are you happy with the overall coverage you are getting on T-Mobile in the U.S with the P30 Pro?
Sent from my SM-G975U1 using Tapatalk
Click to expand...
Click to collapse
I am very happy with coverage and quality on my P30 Pro with T-Mo, VOLTE does work as well on mine. I have the amazon.de version VOG-L29 Dual Sim, No issues with Dual sim either. Wifi Calling is something that was always hit or miss with me. I do see the slider die it using shortcut maker but as many overseas phone thats a T-Mo issue not on the phone. Now correct me if I am wrong but isnt the model being sold by B&H the same as the other unlocked versions? Or does software have more bands active?

Poison423 said:
I am very happy with coverage and quality on my P30 Pro with T-Mo, VOLTE does work as well on mine. I have the amazon.de version VOG-L29 Dual Sim, No issues with Dual sim either. Wifi Calling is something that was always hit or miss with me. I do see the slider die it using shortcut maker but as many overseas phone thats a T-Mo issue not on the phone. Now correct me if I am wrong but isnt the model being sold by B&H the same as the other unlocked versions? Or does software have more bands active?
Click to expand...
Click to collapse
To my knowledge the B&H photo is your phone. I got the VOG-L09 and it has the exact same bands. It is your phone with a single SIM.
Sent from my SM-G975U1 using Tapatalk

Poison423 said:
I am very happy with coverage and quality on my P30 Pro with T-Mo, VOLTE does work as well on mine. I have the amazon.de version VOG-L29 Dual Sim, No issues with Dual sim either. Wifi Calling is something that was always hit or miss with me. I do see the slider die it using shortcut maker but as many overseas phone thats a T-Mo issue not on the phone. Now correct me if I am wrong but isnt the model being sold by B&H the same as the other unlocked versions? Or does software have more bands active?
Click to expand...
Click to collapse
Definitely a TMobile US issue for wifi calling... they just basically need programming in place so when the sim is inserted, it allows provisioning to the Tmobile network. Now they might not be doing this because Huawei is giving them certain information but more likely has to do with Huawei not being sold in the US officially due to the supposed "spying" Applegate.... Not enough Huawei phones in the US otherwise to waste the time to have provisioning built in for the US.
More proof for the pudding... Apple who has been fighting with Qualcomm over whether or not they "stole" technology (doesn't that sound familiar?) agreed to a new contract because there was no other alternative for Apple to get 5G chips for their phones other than Huawei. Doing so would have meant opening Huawei back to the US and being major competition for Apple... so what does Apple do, throw some money around, make their Qualcomm problem go away overnight and still have their foothold on the necks of the US phone market... Trust me, if Xiaomi starts becoming more popular, they'll be the next one accused of spying... all to protect the almighty Apple...
So unless the general dissolution with Huawei stops... really, all smartphone companies and cell providers "spy" on their customers... wifi calling won't be viable... just have to workaround with digits or google voice

Wifi calling and voLTE on Att only

Wanted to ask if anyone with a USA model rog 2 tried att Sim card and did it work with att? We already know t-mobile doesn't list those options. This way we can all go search for phones that will suit our needs.

My US model will be delivered either Saturday or Monday and I use AT&T. Will post my results then.

I just talked to support again, and they said no VoLTE or VoWifi on Tmobile, Verizon, or AT&T, or any American carrier. They have no plans to enable it. The suggestion was that I leave them a complaint, so I did so via their form on Asus.com as well as Facebook.

The problem is AT&T is shutting down their 3G service this year so if VoLTE isn't enabled we can't make voice calls.

TawkinTrash said:
The problem is AT&T is shutting down their 3G service this year so if VoLTE isn't enabled we can't make voice calls.
Click to expand...
Click to collapse
As is TMobile, from what I understand. You should be able to make calls, but it will default to EDGE, IIRC.

Cellendril said:
As is TMobile, from what I understand. You should be able to make calls, but it will default to EDGE, IIRC.
Click to expand...
Click to collapse
Ok I just tried to confirm and got info they're not shutting down 3G just yet. We still have a few more years.
I guess that's good we'll still have calls but isn't good because there's no reason for VoLTE.

Thanks to ryououki for the offer, we will await your testing and we will be here if u need any help

I seriously don't understand a U.S model, yet no volte? That's just dumb. Wtf?

I can tell you right now it wont work, Its a sick phone but I'm sending it back because of this. Asus screwed up with no VoLTE, no VoWiFi, and only a 1080p screen IMO. Maybe next time they will get it right. I hope the OnePlus 7T and the 7T Pro has it... Crazy!

Just read this for T-Mobile:
Due to lack of VoLTE support you won't be able to place and receive calls including 911 calls in some buildings and some outdoor areas where 2G GSM and 3G HSPA+ signal (marketed by T-Mobile as "4G") is too weak or non-existent while LTE band 12 is available

Great info so far , just need someone to try it with att sim for confirmation.
So far we know,
Tmobile no go on volte or wifi call
Verizon works on data only no calls or txt just like rog one. Cdmaless option unclear at this moment .
Att no test yet

I have a US model on AT&T and can't get VoLTE yet.
I talked to AT&T support and they said there's no compatibility yet.
The IMEI doesn't come up in their system as a known device.

I have at&t and a USA version of the phone, I can confirm as well that the phone drops to 3g when making voice calls.
This is really really bad because at&t plans to shut down their 3g in 2021, that means no voice calls after that. Asus USA knowingly selling a $900 phone that cant make a call in 2 years is borderline fraudulent.

yok3 said:
I have at&t and a USA version of the phone, I can confirm as well that the phone drops to 3g when making voice calls.
This is really really bad because at&t plans to shut down their 3g in 2021, that means no voice calls after that. Asus USA knowingly selling a $900 phone that cant make a call in 2 years is borderline fraudulent.
Click to expand...
Click to collapse
I have to agree. Its just dumb.
Someone needs to see if something like this can work.....
https://forum.xda-developers.com/Mi-9/how-to/wifi-calling-volte-mi-9-t3917887
There has to be options somewhere we can atleast get VOLTE working. Yes root will be mandatory, but i am ok with that. I might order one from amazon. Whats the return policy for phones on amazon? Anyone know?

I believe there were reports that VoLTE was working on Tencent models?
We really need to look into making a custom rom for our phones for the US carriers.

Did you try dialer codes *#*#VOWIFI#*#* and *#*#VOLTE#*#*

How ridiculous. This is how you ruin a near perfect phone.

stealthj said:
I believe there were reports that VoLTE was working on Tencent models?
We really need to look into making a custom rom for our phones for the US carriers.
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I did more research, it seems to be more on the AT&T side than on the Asus side of things. Barring a few well-know phones like the Pixel 3, most BYOD Android devices on AT&T in general don't get VoLTE, including unlocked versions of Samsung Galaxy devices that are not purchased through AT&T. It looks like AT&T does not enable VoLTE for device models with IMEIs that it does not recognize (i.e. doesn't have AT&T certified ROMs), because they are afraid of getting fined by FCC for non-E911 compliance which requires the carrier to certify E911 support on all handset/firmware when on VoLTE. My guess the Tencent models with VoLTE working are somehow whitelisted by AT&T ad-hoc or they are working on Non-U.S. carriers. So it is more of an AT&T problem than an Asus/ROM issue. (though there may be ROM hacks to ask the handset to force VoLTE even if AT&T doesn't advertise the capability during protocol handshake).
Since this is a much bigger issue than just the ROG II phone, hopefully they have a plan to white list all BYOD Android devices for VoLTE when they sunset 3G. Otherwise AT&T would stand to lose a good chunk of revenue from those who migrate over from other carriers with BYOD phones, say a Galaxy phone with a T-Mobile ROM. You simply can't even offer a BYOD plan if you don't have voice call working for most of the BYOD Android devices.

suzook said:
I have to agree. Its just dumb.
Someone needs to see if something like this can work.....
https://forum.xda-developers.com/Mi-9/how-to/wifi-calling-volte-mi-9-t3917887
There has to be options somewhere we can atleast get VOLTE working. Yes root will be mandatory, but i am ok with that. I might order one from amazon. Whats the return policy for phones on amazon? Anyone know?
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I'm pretty sure their return policy for phones is the same as all other goods. I bought and returned the original ROG phone last year through Amazon, considering doing the same with ROG II unless there's a breakthrough on providers and features with custom ROMS/etc.

Yea that's pretty dirty to whitelist the Tencent version but not the US model.