Mi Mix 2 on T-Mobile - Xiaomi Mi Mix 2 Questions & Answers

Is Mi Mix 2 works on US T-Mobile for VOLTE and WiFi Calling?
Thanks in advance.

It should

stu5797 said:
It should
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I just want to make sure since it comes from overseas and not sold officially in states.

Yes, existing services will work, however the SIM card for the account with the services has to be activated on a network approved/issued phone. If not, you will need to call support. If you've used volte before bringing the phone onto the network, it will work from their end though you may have to change the settings on the device. If you are trying to activate a new service with the phone, you will need to call T-Mobile.

t-mizzle said:
Yes, existing services will work, however the SIM card for the account with the services has to be activated on a network approved/issued phone. If not, you will need to call support. If you've used volte before bringing the phone onto the network, it will work from their end though you may have to change the settings on the device. If you are trying to activate a new service with the phone, you will need to call T-Mobile.
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Thanks. How about wifi calling?

Same as volte or other features. If a network service/feature has been active/used on the network before the new phone was brought to the network, it's all good from the carrier end.

t-mizzle said:
Same as volte or other features. If a network service/feature has been active/used on the network before the new phone was brought to the network, it's all good from the carrier end.
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I don't think thats a correct statement. I have VOLTE and wifi calling on my current phone. But when I got Xperia XZ premium mone of those features worked.

daviddem said:
I don't think thats a correct statement. I have VOLTE and wifi calling on my current phone. But when I got Xperia XZ premium mone of those features worked.
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You misunderstood. If you put a SIM into a network issued or supported phone, typically the services that are already active will work right away. However if you bring a phone to the network that is not sold by the carrier, chances are you will have to call them to get the services working.
Some carriers are setup in a way that inserting a new sim into a phone unknown to the network won't work, some or all services may be disabled but if you put the new sim into a recognized device first, the sim and it's services will be active and you can just transfer it to the unrecognized phone. Of course, that may not be enough, modifying APN settings on the phone for example may be needed to get it running

I'm going to cut my monthly bill in half by switching to project fi and I'm sharing my plan here though it will work and/or make sense for very few users out there.
It only makes sense to do this if you are already on T-Mobile's network and you pull less than 2GB from the LTE network. This is due to the low base cost but high bandwidth prices through project fi. If you are a heavy data user and you don't pull the bandwidth from wifi, project fi plan would cost more than the T-Mobile you're on.
Next up, you need one of these 6 devices:
Pixel XL Model G-2PW2100 (North American version)
Pixel Model G-2PW4100 (North American version)
Android One Moto X4 (All versions)
Nexus 5X Model LGH790 (North American version)
Nexus 6P Model H1511 (North American version)
Nexus 6 Model XT1103 (North American version)
While you can use most phones on project fi, (all phones that already work on T-Mobile will do) only these 6 phones can activate a project fi sim. If you don't already have one, you don't need to buy them, you can just borrow one from a friend however they can be used to activate a fi sim only once, after the activation that phone won't be able to activate another. Or if you find a damaged phone cheap, it only needs to be able to connect to the internet, read a sim and it's touch screen is still working, you can do that. Nexus and pixel phones with shattered screens sell as low as $50, you just need it activate it the sim. If you don't pull lots of data, you recover the cost in 2 billing cycles.
Project fi works by having a physical T-Mobile SIM, virtual Sprint SIM (it supports up to 10 virtual SIM cards) and it connects to an array of wifi networks in urban areas throughout the US. A fully compatible project fi phone connects to all of them, other phones aren't compatible with the virtual SIMs so they are limited to T-Mobile's network, so if you are a T-Mobile user, nothing changes except the reduction in monthly bill (provided you don't pull lots of data through T-Mobile.
Now this is where the mix 2 comes in. It's compatible with all but the T-Mobile band 71 but I wouldn't get excited about that anytime soon, by the time T-Mobile fully deploys it's 600 MHz band, today's flagships will have reached end of life anyway, it's something to consider once mix 3 or mix 4 are out. I suspect that the Mix 2 is capable of utilizing both T-Mobile's and Sprint network due it's array of compatible bands but I won't know for sure until next week. Even if it's not, using the mix 2 through T-Mobile's network only at a reduced cost is still a good deal.

t-mizzle said:
I'm going to cut my monthly bill in half by switching to project fi and I'm sharing my plan here though it will work and/or make sense for very few users out there.
.
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You would be better off switching to http://www.mintsim.com
The 2Gb, and unless you are extremely miserly on Data, the 5Gb plan will be cheaper than Project Fi. Mint is on T-mobile, and owned and operated by UltraMobile. You do have to buy several months at once, so that is a downside, but if you can afford the outlay of cash, it is a very inexpensive service. I personally just switched from Project Fi, and have been happy with the service.

That is a good alternative too. Ting is also an option for those wanting to reduce their bills. I live in an urban area and project fi is the only viable alternative for me, all the local MVNO's get blatantly deprioritized.

daviddem said:
Thanks. How about wifi calling?
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T-Mobile's WiFi Calling will not be baked into the Mi Mix 2, there for you won't have the ability to use it. T-Mobile requires a WiFi certification through them that the phone manufacture must pay for and provide units for testings in order to receive their certification. Although the Mi Mix 2 has every band supported that T-Mobile uses outside of the new 600MHx band 71 and extended band 4 on band 66, it will work fine for calling and texting but no WiFi Calling.

Can anyone confirm volte works on T-Mobile? Thanks!
Sent from my Redmi Note 4 using Tapatalk

Ulver said:
Can anyone confirm volte works on T-Mobile? Thanks!
Sent from my Redmi Note 4 using Tapatalk
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VoLTE works on MintSIM, which is an MVNO on T-Mobile.

Has anyone used it with actual T-Mobile and can confirm it's working? Or is it guaranteed to work with actual T-Mobile if it works on a T-Mobile MVNO? Thanks guys!

I am in Australia on Telstra, on my Redmi 3 it used to drop from LTE to 3G when making a call.
Now is says 4G+ even during a call, on my MI Mix 2
When I turn on Volte is says HD next to 4G+, when I turn off Volte the HD disapears, I guess HD stands for High Definition?

FMXP said:
Has anyone used it with actual T-Mobile and can confirm it's working? Or is it guaranteed to work with actual T-Mobile if it works on a T-Mobile MVNO? Thanks guys!
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Yes,I got the MIX2 two days ago,have used it w/LTE Bands 4 & 12.
VoLTE is built-in/switchable on/off,AFAICT,no WI-FI Calling.
From my limited use,it all works well (calls/text),connects to WI-FI very quickly,stays connected.
Data signal seems to work well also,turned off WI-FI to test weak T-Mobile signal when @ home,found/stayed connected to Band 12 w/no problem.

There is no WiFi Calling option in this phone (I just got one) ?

toiday said:
There is no WiFi Calling option in this phone (I just got one) ?
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WiFi Calling for T-Mo ile is enabled on a certified device by T-Mobile when a T-Mobile SIM is detected. The Mi MIX 2 has not submitted a request for testing and has not paid for the certification process to have T-Mobile WiFi Calling enabled. Xiaomi is not marketing the device towards the U.S. market so there will not be any T-Mobile WiFi Calling on the Mi MIX 2.

toiday said:
There is no WiFi Calling option in this phone (I just got one) ?
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Click to collapse
Wifi calling works if you use Google Voice.

Related

Rest my phone without service?

This is going to seem like a stupid question but, I have a Nexus running CyanogenMod 11 that I no longer use as a phone; it has no data plan. I am currently using a Moto X. But I'd like to do a factory reset through TWRP. Basically start fresh. The only thing I use the phone for now is WiFi to browse the web. Since a factory reset would clear all of my settings would I be able to sign back in on Google even though I don't currently have a data plan? I'm going to say that yes, I'd be able to but I just want to make sure. I don't want to render the device a paperweight.
safe reset
Most definitely, you can do anything device related via Wi-Fi that you could do via mobile data. If during initial setup after reset your device does not want to allow you to add a Google account using Wi-Fi, simply skip Google signin, and once device is running, just activate your Wi-Fi, join your network and add a Google account directly from Accounts and Sync in settings.
oddball3 said:
Most definitely, you can do anything device related via Wi-Fi that you could do via mobile data. If during initial setup after reset your device does not want to allow you to add a Google account using Wi-Fi, simply skip Google signin, and once device is running, just activate your Wi-Fi, join your network and add a Google account directly from Accounts and Sync in settings.
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Click to collapse
Thanks. That's what I thought but figured I'd jump on here and make sure. I'm not even sure what my plans are for this device. I love the Nexus but the Moto X is pretty awesome out of the box. My Nexus is on the last known good nightly for CM 11; 11-20140117-NIGHTLY-toro. I might just sell it. I just didn't want to reset it and make it a complete brick for someone else.
Safe reset
is your device gsm or cdma?
oddball3 said:
is your device gsm or cdma?
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It's Verizon so I believe it's CDMA.
The Tallest said:
It's Verizon so I believe it's CDMA.
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make and model? we can get it onto prepaid, or possibly enable gsm to pop a sim in, depending on what it is
Free Moto X
Verizon Wireless is the only major wireless carrier today that does not put a software lock on any of its 4G LTE smartphones. This means that whether you are on a contract or you paid full price for your Verizon 4G LTE handset, it is automatically unlocked.
You should be able to put a SIM card in it from any GSM carrier and it will offer basic voice, texting and 3G data. Whether it will also support LTE depends on what LTE frequency bands are
supported in the phone.
A Moto X designed for Verizon will work with either an AT&T or T-Mobile SIM on the gsm network. But you may be limited in terms of the service that you can access. As I said, you will definitely be able to text, call and use 3g, access to LTE will depend on the frequency band being used in your area, but most likely you'll be covered.
As far as the nexus is concerned, it supports LTE Band 4 AWS, which is also supported by AT&T and T-Mob on GSM, although not everywhere. A simple, cheap prepaid SIM from one of these networks popped into your nexus will confirm if it will work.
Hope I was able to help out, so now what are you waiting for? Go get yourself an AT&T or T-Mobile prepaid SIM and free your Gnex.
oddball3 said:
Verizon Wireless is the only major wireless carrier today that does not put a software lock on any of its 4G LTE smartphones. This means that whether you are on a contract or you paid full price for your Verizon 4G LTE handset, it is automatically unlocked.
You should be able to put a SIM card in it from any GSM carrier and it will offer basic voice, texting and 3G data. Whether it will also support LTE depends on what LTE frequency bands are
supported in the phone.
A Moto X designed for Verizon will work with either an AT&T or T-Mobile SIM on the gsm network. But you may be limited in terms of the service that you can access. As I said, you will definitely be able to text, call and use 3g, access to LTE will depend on the frequency band being used in your area, but most likely you'll be covered.
As far as the nexus is concerned, it supports LTE Band 4 AWS, which is also supported by AT&T and T-Mob on GSM, although not everywhere. A simple, cheap prepaid SIM from one of these networks popped into your nexus will confirm if it will work.
Hope I was able to help out, so now what are you waiting for? Go get yourself an AT&T or T-Mobile prepaid SIM and free your Gnex.
Click to expand...
Click to collapse
I wasn't really looking to put service on it. BUT, now that you mention it, maybe I could get a sim card from a prepaid Verizon phone and put it into my Nexus and give it to my son.
The Tallest said:
I wasn't really looking to put service on it. BUT, now that you mention it, maybe I could get a sim card from a prepaid Verizon phone and put it into my Nexus and give it to my son.
Click to expand...
Click to collapse
Great idea... shouldn't let old G-Nex go to waste Lol or you could send it over to me in south Africa hehe

Carrier not supported. Will rooting/unlocking bootloader fix this?

Just got off the phone with Google, and apparently my service, Go Smart Mobile (feeds off of T-Mobile towers) is not compatible with the Nexus 5x because it only is unlocked to the major carriers. This is very strange to me, as the Nexus 5 was able to use Go Smart. Anyways, I am wondering if me rooting / unlocking the bootloader will open up any opportunity for my device to be compatible with my carrier. I'd like to know if I should return the device, or stick it out and order the converter for my computer and attempt to root. Thanks.
it only is unlocked to the major carriers - I think this is inaccurate information. If the Nexus 5 worked on GoSmart, the 5x should also, I believe.
Before you do any cable ordering or rooting, have you tried sticking a GoSmart nanoSIM in the phone and activating it? If it works on Tmobile towers, it uses the same bands, so it should work. If you have a functioning GoSmart microSIM in your possession, you can cut it down to fit in the 5x or get a nanoSIM from your provider.
You will also have to add the APN settings of GoSmart in Settings/More/Cellular Networks/Access Point Names. Your provider can give you this info.
After a bit more research is GoSmart 3G only? If so, you need another provider. Where are you located?
cabracorax said:
it only is unlocked to the major carriers - I think this is inaccurate information. If the Nexus 5 worked on GoSmart, the 5x should also, I believe.
Before you do any cable ordering or rooting, have you tried sticking a GoSmart nanoSIM in the phone and activating it? If it works on Tmobile towers, it uses the same bands, so it should work. If you have a functioning GoSmart microSIM in your possession, you can cut it down to fit in the 5x or get a nanoSIM from your provider.
You will also have to add the APN settings of GoSmart in Settings/More/Cellular Networks/Access Point Names. Your provider can give you this info.
After a bit more research is GoSmart 3G only? If so, you need another provider. Where are you located?
Click to expand...
Click to collapse
I'm so sorry, I should have specified. I actually went to a local Go Smart Mobile and tried two different nano SIM cards and even replaced one of them completely. None of them worked. The rep then tried a T-Mobile and AT&T SIM, which worked. My Go Smart Mobile SIM works in my Galaxy S6 Edge, but not in the Nexus 5x. I spoke with a Google agent who confirmed that when Google says "Unlocked" for specifically the Nexus 5x, it only means for the major carriers. This of course proving why my SIM will not be recognized. I can't even access the mobile network settings, since it is greyed out completely. Very disappointing since I am in love with Nexus's and I really don't understand why the Nexus 5 was compatible, but not the 5x. This baffles me
Also I am located in South Florida, and Go Smart does have 4G.
Are you totally commited to GoSmart? Starting at $30 a month Project Fi would likely work in South Florida, as would other providers.
Hopefully others can chime in with solutions. Good luck!
Bump. Anyone have any thoughts on this?
I'm using my 5X on MetroPCS, which isn't a major carrier, but it is part of T-Mobile. I have zero problems with it. I got my SIM activated and have full LTE and even WiFi calling.
Sent from my Nexus 5X using Tapatalk
OldJon said:
My Go Smart Mobile SIM works in my Galaxy S6 Edge, but not in the Nexus 5x.
Also I am located in South Florida, and Go Smart does have 4G.
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Click to collapse
Glad to see that Go Smart does have 4G in your area. The maps are misleading--obviously not up-to-date with T-Mobile upgrades. Are you still interested in keeping your S6? If not, you could try calling Go Smart Mobile for a device change (entering the new IMEI) using the same sim. You may want to try that anyway. If, after correct IMEI and APN settings are entered on the phone, it still doesn't work, I'd get the phone replaced. I don't know if you've tried FB, but I asked for some support there. (Basically, anyone have a 5X on this MVNO.)
MVNOs which is what all the sub networks are, for the most part. Being an MVNO they use the same towers as their provider. Any unlocked phone that will work with the provider should work with the MVNO
Rooting probably won't help. Where did you buy the phone. Also what doesn't work, calls and data? What APN are you using?
There are providers that do block IMEI of phones they don't recognize. AT&T used to do this a long time ago and have since abandoned it. Are you sure your MVNO carrier is not doing such a thing?
The Google rep is wrong. The phone can't be unlocked for "only major carriers". It's either unlocked or it's not, though any network can choose to block specific devices if they so choose.
This device is compatible with every network in the world up to 3g/H+. LTE is region specific however.
scoliosis said:
There are providers that do block IMEI of phones they don't recognize. AT&T used to do this a long time ago and have since abandoned it. Are you sure your MVNO carrier is not doing such a thing?
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Device input at the Go Smart Mobile returned a positive on the Google N5X for the service. Hopefully, the device id's are in their system.
Sent from my Nexus 9 using Tapatalk

WiFi Calling and VoLTE and AT&T

It's my understanding that these features (advanced calling, like WiFi calling and VoLTE) Doo not work on unbranded devices like Pixel and others. This was the case with my unbranded SM935F or Galaxy S7 Edge until we got some files, an appropriate CSC, and also had AT&T switch our account to an IMEI of an AT&T branded device that had working WiFi Calling (others have apparently just called AT&T and had them provision WiFi Calling)
Note: for me, I have a business account so I could just go into my business portal and put in an IMEI that I got from an S7 Edge model in an AT&T store
I am attaching the files that we needed to add to our system to get WiFi calling to work on AT&T. I think I remember all I had to do was to add them and make sure permissions were correct
Here is an IMEI that I saw on another post that may work ..... But I do know that the AT&T system needs to recognize your phone IMEI as an att branded device that has working WiFi calling. So if you aren't business customers it will require a call to customer support.
Possible working IMEI:
Mod edit: Removed
Any Pixel AT&T users that could try this and report back would be greatly appreciated!
Btw, I'm not completely sure which files are needed in the Pixel as compared to the S7 Edge .... I would have a backup available
Here's link
https://drive.google.com/file/d/0B4qgtyu0rDEbU3dGNnhLZ0FXTWM/view?usp=drivesdk
File too late to upload here
You don't need any of that for WiFi calling or VoLTE. That all works fine on custom roms
spaceman860 said:
You don't need any of that for WiFi calling or VoLTE. That all works fine on custom roms
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I obviously could be wrong ...... But I'm 99% sure that what you are saying is not true for AT&T and maybe even other USA carriers!
I KNOW that I'm right for S7 phones and ROMs .... And the problem is so pervasive that they have even been able to get unbranded S8's to obtain WiFi Calling on AT&T or other USA carriers (even though WiFi calling works great on branded S8 phones)
AT&T users a different mechanism to provision WiFi calling than other carriers
jcrompton said:
I obviously could be wrong ...... But I'm 99% sure that what you are saying is not true for AT&T and maybe even other USA carriers!
I KNOW that I'm right for S7 phones and ROMs .... And the problem is so pervasive that they have even been able to get unbranded S8's to obtain WiFi Calling on AT&T or other USA carriers (even though WiFi calling works great on branded S8 phones)
AT&T users a different mechanism to provision WiFi calling than other carriers
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Click to collapse
You are correct that AT&T does not allow unbranded phones to use those features. It's all BS too. I have great LTE coverage but many times I will go to make a call and have crap service because they have canabalized a lot of the hsdpa towers for LTE. Then the switch back to LTE can take forever. And I don't care what they or anyone says AT&T's hspa+ is no where near as fast
None of this works, as AT&T blocks access to VoLTE on Pixel phones. Denies me the use of Numbersync for my tablet and android wear 2.0 watches. AT&T service techs keep promising to fix it and try to force it to work, but still blocked. It is simply a situation for Google to get the Pixel certified for the AT&T network, which is problematic, as AT&T uses a non-standard protocol for HD Voice that is unique to their network. So, as best I can tell, AT&T has to release the source code, for a price, I presume, to Google to add to the phones and then pay for the certification process with the FCC. Seems a stand-off as long as Google has an "exclusive" arrangement with Verizon. So for me, I'm pissed not to have numbersync for my devices, but unwilling to give up all the advantages of the Pixel phone.
That's why I switched to T-Mobile.
So there is no way to get VoLTE on the Pixel XL with AT&T then?
Sent from my Pixel XL using Tapatalk
chipstien said:
So there is no way to get VoLTE on the Pixel XL with AT&T then?
Sent from my Pixel XL using Tapatalk
Click to expand...
Click to collapse
Not currently
If AT&T carries the upcoming Pixel 2, is it possible Numbersync would start working on Pixel 1 devices?
jkimrey said:
If AT&T carries the upcoming Pixel 2, is it possible Numbersync would start working on Pixel 1 devices?
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I doubt it. They only support advanced features on devices sold by them so it's not as if older Pixels will suddenly be grandfathered in just because they start carrying newer ones.
This annoys me to no end... If I buy a phone from att, do they have to give me an unlock code when the phone is paid off? I really need WiFi calling for a trip I make multiple times a year
Sent from my Pixel XL using Tapatalk
murso74 said:
This annoys me to no end... If I buy a phone from att, do they have to give me an unlock code when the phone is paid off? I really need WiFi calling for a trip I make multiple times a year
Sent from my Pixel XL using Tapatalk
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I was able to get the code the same day or next for the att Note 8 that was bought from Samsung. The device is paid off.
muzzy996 said:
I doubt it. They only support advanced features on devices sold by them so it's not as if older Pixels will suddenly be grandfathered in just because they start carrying newer ones.
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Yeah according to a rep I spoke with, the pixel 2 will support Numbersync even though att isn't selling them. There are, however, no plans to change the restriction on the original pixels.
I'm in the same boat but I'm genuinely curious - if I don't need wifi calling - is it really a big deal not having VoLTE? I'm taking in terms of better signal or faster LTE internet speed. Or does VoLTE is just having clearer phone calls? I guess what I'm asking is what other benefits are we losing (on a technical standpoint)
keplenk said:
I'm in the same boat but I'm genuinely curious - if I don't need wifi calling - is it really a big deal not having VoLTE? I'm taking in terms of better signal or faster LTE internet speed. Or does VoLTE is just having clearer phone calls? I guess what I'm asking is what other benefits are we losing (on a technical standpoint)
Click to expand...
Click to collapse
Late response but as far as AT&T goes besides VoLTE what I experienced on my Pixel XL was random issues with group text (MMS) reception from certain individuals from other carriers.
In particular it seemed as though if senders of MMS texts to a group chat that I was participating in sent a text from a carrier like T-Mobile and they were using Samsung devices with VoLTE and enhanced LTE stuff enabled on their end I'd not receive the text. I would instead receive texts from others in the conversation. I could freely text any of the same individuals in a separate standard SMS conversation just fine, and they could send me an MMS text like a photo, but as soon as we were in group MMS I'd lose the ability to receive their texts and no amount of APN changes or combinations of texting apps would fix it.
I can't tell you how many times over the course of the first 5 months of owning my Pixel XL with an AT&T SIM in it I missed out on half the conversation in group MMS. Doing nothing to my phone other than porting number to T-Mobile and putting in my new T-Mobile SIM all of my group MMS issues went away (replaced with ****ty signal LOL but that's a different story). I'm now on Verizon with my XL and am a happy camper, albeit poorer having wasted money jumping around.

AT&T problem

I'm wondering if anyone else is or has been experiencing this issue. For the last couple weeks my black Pixel 2XL 128gig on Android 8.0 is having a problem switching from LTE to HSPA when trying to make a phone call. I've been on the phone with both Google and AT&T numerous times. ATT deactivated and reactivated my sim card. I ended up getting a new sim card and still didn't fix the problem. Google eventually sent me a brand new phone and I'm still having the same problem. Now Google wants to send me another new phone. I had the original pixel XL on ATT and did not have this issue at all. Anyone else having a similar issue?
Uh... Yes, that's normal, you don't have VoLTE enabled. There's a whole thread about enabling it with AT&T here on the boards. TLR of that thread, download the Oreo 8.1 beta, enable VoLTE in the software, talk to AT&T to enable enhanced voice features.
Sent from my Pixel 2 XL using Tapatalk
You may need a new sim card, I had similar issues, visited an AT&T store and it was fixed within five minutes.
dratsablive said:
You may need a new sim card, I had similar issues, visited an AT&T store and it was fixed within five minutes.
Click to expand...
Click to collapse
I did get a new SIM card. Still was experiencing the same problem. I updated to 8.1 beta to and enabled enhanced LTE to see if that fixes the issue.
JaredC01 said:
Uh... Yes, that's normal, you don't have VoLTE enabled. There's a whole thread about enabling it with AT&T here on the boards. TLR of that thread, download the Oreo 8.1 beta, enable VoLTE in the software, talk to AT&T to enable enhanced voice features.
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Click to collapse
It definitely was not normal. I had a the first pixel XL before this and did not experience this issue.
dutchy716 said:
It definitely was not normal. I had a the first pixel XL before this and did not experience this issue.
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Click to collapse
Then somehow you had VoLTE on your first Pixel. Without VoLTE, the phone will 100% of the time kick back out to HSPA+ when you make a phone call. That's been the case with every phone I've owned prior to VoLTE and actually having a phone that had and made use of VoLTE.
Sent from my Pixel 2 XL using Tapatalk
JaredC01 said:
Then somehow you had VoLTE on your first Pixel. Without VoLTE, the phone will 100% of the time kick back out to HSPA+ when you make a phone call. That's been the case with every phone I've owned prior to VoLTE and actually having a phone that had and made use of VoLTE.
Click to expand...
Click to collapse
I know it's supposed to kick back to HSPA when making a phone call. The problem is that it doesn't. Instead of going to HSPA I lose signal completely. The phone will try to make the phone call and then the phone will manually hang up like I hit the end call button but it does it automatically. Then I either have to toggle airplane mode or reboot the phone to get LTE again.
dutchy716 said:
I know it's supposed to kick back to HSPA when making a phone call. The problem is that it doesn't. Instead of going to HSPA I lose signal completely. The phone will try to make the phone call and then the phone will manually hang up like I hit the end call button but it does it automatically. Then I either have to toggle airplane mode or reboot the phone to get LTE again.
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Click to collapse
Ah ha, your original post didn't make it sound like that. In that case, maybe try a new SIM card?
Edit: Re-read the first post and you already tried a new SIM. Have you tried a SIM from someone else, maybe on another Network to see if it's the phone or the network?
JaredC01 said:
Ah ha, your original post didn't make it sound like that. In that case, maybe try a new SIM card?
Click to expand...
Click to collapse
Ya I got a new SIM the other day. I talked to jcase about it and he believes it's a provisioning issue on AT&Ts end. I was just wondering if anyone else has experienced this and if they found a solution to it. I did end up upgrading to 8.1 beta and that obviously fixed it because of enhanced calling. It's just weird because I haven't found anybody else who has had this problem.
dutchy716 said:
I'm wondering if anyone else is or has been experiencing this issue. For the last couple weeks my black Pixel 2XL 128gig on Android 8.0 is having a problem switching from LTE to HSPA when trying to make a phone call. I've been on the phone with both Google and AT&T numerous times. ATT deactivated and reactivated my sim card. I ended up getting a new sim card and still didn't fix the problem. Google eventually sent me a brand new phone and I'm still having the same problem. Now Google wants to send me another new phone. I had the original pixel XL on ATT and did not have this issue at all. Anyone else having a similar issue?
Click to expand...
Click to collapse
One thing you should always try before going to the provider is a safe mode boot. I tried a new rom and could not get data. Most things worked but no data. I could call and WIFI but no cellular data. In safe mode I got data. That tells you some third party APP is responsible.
JaredC01 said:
Then somehow you had VoLTE on your first Pixel. Without VoLTE, the phone will 100% of the time kick back out to HSPA+ when you make a phone call. That's been the case with every phone I've owned prior to VoLTE and actually having a phone that had and made use of VoLTE.
Sent from my Pixel 2 XL using Tapatalk
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What does VoLTE have to do having LTE data while on a call? I don't see any reason why you couldn't have LTE available for data even when it doesn't support LTE for voice calls.
I've had LTE switch to H every time I've made a phone call on my Nexus 5, Nexus 5X and Pixel 2 XL. Since 8.1 I've had VoLTE. I know because when I make a call I see the "HD" which is VoLTE but the LTE still switches to H so it seems like the two are related.
jimv1983 said:
What does VoLTE have to do having LTE data while on a call?
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Uhm, everything? VoLTE is Voice over LTE which implies that you have an LTE radio connection (as opposed to a UMTS/WCDMA/HS*PA radio connection).
jimv1983 said:
I don't see any reason why you couldn't have LTE available for data even when it doesn't support LTE for voice calls.
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That's because you don't understand the fundamental way in which cellular networks work. Don't feel bad - you're not alone; it's a complicated topic.
The radio on your device can only support one type of radio connection at a time. There are a multitude of reasons for this: capacity on the chip, the need for multiple amplifiers to work simultaneously (because typically carriers use different parts of the radio spectrum for one Radio Access Type than another), antenna capacity etc. Keep in mind that are scenarios in which your device is already juggling quasi multiple radio connects, e.g. carrier aggregation.
Don't get me wrong, there have been devices that supported multiple simultaneous radio access technologies on a single device, but that's because they had multiple radios. These were older devices on IS-95 CDMA carriers such a Sprint when they were pushing WIMAX, and even I believe some Verizon devices which allowed them to do multi-RAB for simultaneous voice and calls before their CDMA infrastructure was upgraded to allow this (and prior to their VoLTE launch). These devices are few and far between.
One last point on this topic: the network handles handover between RATs (though it's possible for the device to only support one RAT). If you were allowed to have simultaneous connections to two radio access types, the network would be juggling twice the resources for your device (the transmit and receive portion of a data connection or call is not the only resource involved). This is yet another reason why in most circumstances you'll never see two simultaneous RATs for one device: it costs the network money. Unless you're trying to cover up for a deficiency is your network architecture (e.g. IS-95 CDMA networks lack of support for multi-RAB. Multi-RAB refers to radio access bearers, basically multiple virtual connections across a single radio link. You might think of this like VLANs on an ethernet network.) you don't put the network and engineering expenses to support multiple RATs..
jimv1983 said:
I've had LTE switch to H every time I've made a phone call on my Nexus 5, Nexus 5X and Pixel 2 XL. Since 8.1 I've had VoLTE. I know because when I make a call I see the "HD" which is VoLTE but the LTE still switches to H so it seems like the two are related.
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Click to collapse
Actually, no. "HD" stands for "HD Voice" which is a better codec. Depending on the carrier, you may get HD voice on a 3G RAT and VoLTE RAT or just on a VoLTE RAT. Keep in mind that HD Voice uses more radio resource than the standard GSM codecs, so there's a trade-off involved here. LTE is more spectral efficient, so offering the higher quality, higher bit rate voice codec on VoLTE has less of an impact on the network than offering it on VoLTE + 3G. So depending on your carrier, they may or may not allow the HD codec on non-VoLTE radio connections. Either way, HD does not in any way shape or form constitute having a VoLTE connection, since it's radio access type independent.
RomPlinker said:
Uhm, everything? VoLTE is Voice over LTE which implies that you have an LTE radio connection (as opposed to a UMTS/WCDMA/HS*PA radio connection).
That's because you don't understand the fundamental way in which cellular networks work. Don't feel bad - you're not alone; it's a complicated topic.
The radio on your device can only support one type of radio connection at a time. There are a multitude of reasons for this: capacity on the chip, the need for multiple amplifiers to work simultaneously (because typically carriers use different parts of the radio spectrum for one Radio Access Type than another), antenna capacity etc. Keep in mind that are scenarios in which your device is already juggling quasi multiple radio connects, e.g. carrier aggregation.
Don't get me wrong, there have been devices that supported multiple simultaneous radio access technologies on a single device, but that's because they had multiple radios. These were older devices on IS-95 CDMA carriers such a Sprint when they were pushing WIMAX, and even I believe some Verizon devices which allowed them to do multi-RAB for simultaneous voice and calls before their CDMA infrastructure was upgraded to allow this (and prior to their VoLTE launch). These devices are few and far between.
One last point on this topic: the network handles handover between RATs (though it's possible for the device to only support one RAT). If you were allowed to have simultaneous connections to two radio access types, the network would be juggling twice the resources for your device (the transmit and receive portion of a data connection or call is not the only resource involved). This is yet another reason why in most circumstances you'll never see two simultaneous RATs for one device: it costs the network money. Unless you're trying to cover up for a deficiency is your network architecture (e.g. IS-95 CDMA networks lack of support for multi-RAB. Multi-RAB refers to radio access bearers, basically multiple virtual connections across a single radio link. You might think of this like VLANs on an ethernet network.) you don't put the network and engineering expenses to support multiple RATs..
Actually, no. "HD" stands for "HD Voice" which is a better codec. Depending on the carrier, you may get HD voice on a 3G RAT and VoLTE RAT or just on a VoLTE RAT. Keep in mind that HD Voice uses more radio resource than the standard GSM codecs, so there's a trade-off involved here. LTE is more spectral efficient, so offering the higher quality, higher bit rate voice codec on VoLTE has less of an impact on the network than offering it on VoLTE + 3G. So depending on your carrier, they may or may not allow the HD codec on non-VoLTE radio connections. Either way, HD does not in any way shape or form constitute having a VoLTE connection, since it's radio access type independent.
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My Pixel 2 XL does VoLTE on AT&T. "HD" might have different meanings in different cases but in this case the "HD" does mean VoLTE. Google specifically stated that in release notes for 8.1 on the Pixel 2 XL.
Also, back when I had a Galaxy S2 Skyrocket (AT&T's LTE variant of the Galaxy S2 and its first LTE phone) back in late 2011 it didn't do VoLTE but it did allow LTE data while a voice call was in progress.

AT&T Wireless Calling

This will determine if I buy this phone, have been eyeing OnePlus 7 for a few months but haven't seen anybody attempt to use wifi calling on AT&T Network.
Sent from my SM-G950U using Tapatalk
mikebb00 said:
This will determine if I buy this phone, have been eyeing OnePlus 7 for a few months but haven't seen anybody attempt to use wifi calling on AT&T Network.
Sent from my SM-G950U using Tapatalk
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I just got me an AT&T sim, and wifi calling and all other features such as texting works fine.
matt1733 said:
Has anyone heard if the oneplus 7t will have voice over LTE on AT&T they dont play nice with unlocked phones and hold back features like volte and wifi calling if its not At&T branded.
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Everything works great, including call forwarding codes etc. This phone is basically a turd on Verizon, no wifi calling, and no texting. My plan is to give the AT&T pay as you go plan a 2 month trial, I will forward my VZW phone to it, and put it through the paces, if all works out, I will get rid of VZW and move to At&t.
I found out, while you can enable Wifi calling on AT&T, it does not actually work when there is no network. OnePlus support says that plan on fixing it on a future update. It does however work on Google Fi.

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