Mi Mix 2s on AT&T - Xiaomi Mi Mix 2S Guides, News, & Discussion

Finally was able to get full LTE working on my Mi Mix 2s.
The problem is when that updated the IMEI on my account, the AT&T system didn't recognize the manufacturer and device so it only provisioned HSPA assuming it was a flip phone.
When they reverted to my Pixel IMEI but with the sim in my Mi Mix 2s full LTE came up after reboot.
A request was added to include the XIaomi on their list of acceptable devices, but was told that it could take 10 days or more.
So if you are switching from another nexgenphone don't update the IMEI until you can confirm that they recognize the device as an LTE capable device. Curious if I had the IMEI of a VoLTE device if that would also get provisioned.
Cheers,

elanstiles said:
Finally was able to get full LTE working on my Mi Mix 2s.
Click to expand...
Click to collapse
Hey, are you on the Chinese miui or another rom? Does it show 4G for you or it actually says LTE? Can't get it beyond 4g

tarek619 said:
Hey, are you on the Chinese miui or another rom? Does it show 4G for you or it actually says LTE? Can't get it beyond 4g
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Click to collapse
Isn't 4g=LTE?

Flatric said:
Isn't 4g=LTE?
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Click to collapse
Great! That means i got super lucky with my purchase. Thanks!

tarek619 said:
Hey, are you on the Chinese miui or another rom? Does it show 4G for you or it actually says LTE? Can't get it beyond 4g
Click to expand...
Click to collapse
Yes, Chinese rom. Says AT&T LTE. at the top.

elanstiles said:
Yes, Chinese rom. Says AT&T LTE. at the top.
Click to expand...
Click to collapse
For you it shows Lte on the top? For me it shows 4g if I'm on Lte and 4g HD if I'm on Lte and VoLTE is enabled. On previous phones I had the option to decide if I want 4g or Lte shown on the top if I'm on Lte

Flatric said:
For you it shows Lte on the top? For me it shows 4g if I'm on Lte and 4g HD if I'm on Lte and VoLTE is enabled. On previous phones I had the option to decide if I want 4g or Lte shown on the top if I'm on Lte
Click to expand...
Click to collapse
Which phone does AT&T think you have? VoLTE is not provisioned for me so I don't see 4g HD. or VoLTE. From what I have experienced, the level of service provisioned is based on At&t recognizing the device from the IMEI.
Prior to my Mix 2s I had a Pixel, when I originally provided my 2S IMEI number to At&t the service fell from LTE to HSPA. took a few days with them on the phone and emails to rollback to the IMEI on the Pixel for LTE to be restored.
Don't know if they can custom provision service or if the options are driven by the IMEI selection off of some pre-defined menu.

Related

Dropping from LTE to H/H+ During Calls

Curious if it's just me or if it's the One/CM11S...
No issues with LTE, but the connection drops to H or H+ when I'm on a call... Then picks back up immediately after the call ends.
I'm new to AT&T, coming from Verizon, so I wasn't sure if this was typical... So I tested my wife's G3 and a friend's S5 and they both maintain the LTE connection.*
Thanks in advance.*
This is working as intended, the phone or your carrier does not support Voice over LTE (VoLTE). To my knowledge, OPO doesn't have VoLTE just yet, hopefully it will since the hardware is obviously there but requires the baseband to enable VoLTE.
Ok... coming from Verizon I am not that familiar with GSM stuff. On Verizon the voice and data connection were not so linked... so if I was on the call, the LTE connection was maintained for data still. As long as I know this is normal right now, I am ok... was just concerned it was me/my device.
Thanks.
Verizon doesn't support volte, your calls are done over CDMA. Since they are different technologies you should be able to maintain lte data. Which is good since like 2g gsm, CDMA doesn't support both data and calls at the same time. ATT is rolling out volte but only to certain phones. Since att just sees the oneplus as an unknown device, it's probably not allowed volte yet if it's capable.
Sent from my One using XDA Premium 4 mobile app
The Jack of Clubs said:
Verizon doesn't support volte, your calls are done over CDMA. Since they are different technologies you should be able to maintain lte data. Which is good since like 2g gsm, CDMA doesn't support both data and calls at the same time. ATT is rolling out volte but only to certain phones. Since att just sees the oneplus as an unknown device, it's probably not allowed volte yet if it's capable.
Sent from my One using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Sadly, the phone I used before the Nexus 5 doesn't have VoLTE as well. The N5 and OPO definitely has the hardware for VoLTE but it has to be enabled in the baseband. Hopefully OPO/CM flips the switch and allows VoLTE.
Interesting information, I appreciate it.
How can i enable VoLTE in CM11s...?
wyslane z OnePlus One
chriss2 said:
How can i enable VoLTE in CM11s...?
wyslane z OnePlus One
Click to expand...
Click to collapse
If you read the thread before posting, VoLTE is not yet supported. It is unsure whether or not the OPO will support VoLTE. OPO certainly has the hardware capabilities to support VoLTE but it is up to CyanogenMod and OnePlus to activate it via the baseband. Also your area must have VoLTE with your carrier.
Before OPO, or any phone for that matters, supports VoLTE operators must implement it first.
Sent from my One using Tapatalk
leobg said:
Before OPO, or any phone for that matters, supports VoLTE operators must implement it first.
Sent from my One using Tapatalk
Click to expand...
Click to collapse
Its already being deployed in several markets. I live in New York and its deployed here, just the phone's baseband isnt activated for VoLTE yet.
But yeah it depends on phone as well as the carrier.
if you have a problem with switching between frequencies check the settings. Enter the dialer and enter * # * # 4636 # * # * and check the network settings. You probably have a TD-SCDMA ....
wyslane z OnePlus One
chriss2 said:
if you have a problem with switching between frequencies check the settings. Enter the dialer and enter * # * # 4636 # * # * and check the network settings. You probably have a TD-SCDMA ....
wyslane z OnePlus One
Click to expand...
Click to collapse
I am hesitant to mess with it since this seems to be the norm for GSM providers like AT&T (I just wasn't aware, since my past experience has been Verizon (2.5 years) and Sprint (~14 years) and both are CDMA providers).
That said... this is the setting in question (see screenshot).
dmarden said:
I am hesitant to mess with it since this seems to be the norm for GSM providers like AT&T (I just wasn't aware, since my past experience has been Verizon (2.5 years) and Sprint (~14 years) and both are CDMA providers).
That said... this is the setting in question (see screenshot).
Click to expand...
Click to collapse
Mine is the same as your screenshot. I just changed it to LTE/GSM auto (PRL) since that's what my AT&T S4 was set at with the same SIM card. Let's see if that fixes the stability between it switching between H, H+ and 4G frequently.
The Jack of Clubs said:
Verizon doesn't support volte, your calls are done over CDMA. Since they are different technologies you should be able to maintain lte data. Which is good since like 2g gsm, CDMA doesn't support both data and calls at the same time. ATT is rolling out volte but only to certain phones. Since att just sees the oneplus as an unknown device, it's probably not allowed volte yet if it's capable.
Sent from my One using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Loll Verizon users can't even use data during calls
Sent from my One using Tapatalk
dmo580 said:
Loll Verizon users can't even use data during calls
Sent from my One using Tapatalk
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Click to collapse
Uhhh... Yes they can if they have LTE.
dmarden said:
Uhhh... Yes they can if they have LTE.
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Click to collapse
No. Only if they have VoLTE and rollout hasn't started. I have a Verizon iPhone 5.
Sent from my One using Tapatalk
dmo580 said:
No. Only if they have VoLTE and rollout hasn't started. I have a Verizon iPhone 5.
Sent from my One using Tapatalk
Click to expand...
Click to collapse
I've had a GS2, Galaxy Nexus, and GS4. All maintained the LTE connection while using the CDMA connection for voice. Has worked for years.
dmo580 said:
No. Only if they have VoLTE and rollout hasn't started. I have a Verizon iPhone 5.
Sent from my One using Tapatalk
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Click to collapse
No, the iPhone 5 doesn't support SVLTE (Simultaneous Voice and LTE). Almost all other LTE phones on Verizon support SVLTE. I had the Droid DNA on VZW and it absolutely supported SVLTE.
It was stated when the iPhone 5 was announced that it wouldn't support SVLTE.
Sent from my One using XDA Premium 4 mobile app

SM-955F or FD and TMo LTE

Hello.
Anyone have one and can help me? I cannot get LTE on Tmobile no matter what APN settings I use. I know I have LTE here so I know it's not the band.
Thanks.
flash tmobile firmware on it
yeltrah123 said:
flash tmobile firmware on it
Click to expand...
Click to collapse
Yeah don't listen to this guy. The F model is exynos correct? That means no Tmobile software.
The F model you bought might be region locked so it may not work in the USA right now without unlocking it. I know there have been other threads about this not sure if a solution has been found or not.
ShrekOpher said:
Yeah don't listen to this guy. The F model is exynos correct? That means no Tmobile software.
The F model you bought might be region locked so it may not work in the USA right now without unlocking it. I know there have been other threads about this not sure if a solution has been found or not.
Click to expand...
Click to collapse
Yeah I was not listening to him cause this isn't my first rodeo. I bought it region unlocked. Do we know if band 12 is supported if the F or FD?
jdubya45 said:
Hello.
Anyone have one and can help me? I cannot get LTE on Tmobile no matter what APN settings I use. I know I have LTE here so I know it's not the band.
Thanks.
Click to expand...
Click to collapse
i have the 955FD model and it works just fine with T-Mobile USA. did you call T-Mobile to ensure your account is provisioned for LTE access? (I assume you're in the USA). where did you purchase your 955F model S8+?
cortez.i said:
i have the 955FD model and it works just fine with T-Mobile USA. did you call T-Mobile to ensure your account is provisioned for LTE access? (I assume you're in the USA). where did you purchase your 955F model S8+?
Click to expand...
Click to collapse
Hey Cortez. Good to hear this as I have the FD as well. Bought it on eBay from a trusted seller and it is region unlocked. I have LTE provisioned. So...i have "4G" and not 4G+ although I have seen both. What do you show and what band are you on?
jdubya45 said:
Hey Cortez. Good to hear this as I have the FD as well. Bought it on eBay from a trusted seller and it is region unlocked. I have LTE provisioned. So...i have "4G" and not 4G+ although I have seen both. What do you show and what band are you on?
Click to expand...
Click to collapse
4G = LTE. Go to SETTINGS>ABOUT PHONE>STATUS>SIM CARD STATUS and you should see LTE under Mobile network type. that's how i determine LTE access... there's also an app name LTE Discovery that can be used to determine which band you're using. by the way, i believe 4G+ is LTE-A, or carrier aggregation, which is faster than standard LTE..
cortez.i said:
4G = LTE. Go to SETTINGS>ABOUT PHONE>STATUS>SIM CARD STATUS and you should see LTE under Mobile network type. that's how i determine LTE access... there's also an app name LTE Discovery that can be used to determine which band you're using.
Click to expand...
Click to collapse
Thanks bro. VoLTE working?
jdubya45 said:
Thanks bro. VoLTE working?
Click to expand...
Click to collapse
not sure... i do know that when i use my T-Mo SIM (vs ATT) calls are super clear. i'm using my ATT account at the moment because i'm tethering my laptop and TIDAL HiFi music in my car. (my monthly data allowance with ATT is 100GB + rollover).
cortez.i said:
not sure... i do know that when i use my T-Mo SIM (vs ATT) calls are super clear. i'm using my ATT account at the moment because i'm tethering my laptop and TIDAL HiFi music in my car. (my monthly data allowance with ATT is 100GB + rollover).
Click to expand...
Click to collapse
If it drops to H/H+ then you don't have VoLTE. If it stays 4G then you have VoLTE.
Tidbits said:
If it drops to H/H+ then you don't have VoLTE. If it stays 4G then you have VoLTE.
Click to expand...
Click to collapse
Just checked and it drops to H.
Can we co firm if TMo volte is supported?
jdubya45 said:
Just checked and it drops to H.
Can we co firm if TMo volte is supported?
Click to expand...
Click to collapse
Not supported as it dropped to H.
Sent from my SM-G955U using Tapatalk
Tidbits said:
Not supported as it dropped to H.
Click to expand...
Click to collapse
It should be if band 12 is supported. VoLTE is software driven also so maybe a custom ROM will add it in. Waiting...
jdubya45 said:
It should be if band 12 is supported. VoLTE is software driven also so maybe a custom ROM will add it in. Waiting...
Click to expand...
Click to collapse
Wouldn't matter on band support. VOLTE should work on all supported LTE bands for T-Mobile. If it drops to H then that means there is not VOLTE support for T-Mobile.
Sent from my SM-G955U using Tapatalk
Tidbits said:
Wouldn't matter on band support. VOLTE should work on all supported LTE bands for T-Mobile. If it drops to H then that means there is not VOLTE support for T-Mobile.
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
It should be using the Tmobile csc to get Volte support..
I have US and international version, US version supports Volta same sim not supporting in international version... Problem is due to the Csc configured to the international version won't support Tmobile Volta..
Unless we have success in flashing tmobile Csc it won't work same as WiFi calling
Sent from my SM-G955F using Tapatalk
`SBR` said:
It should be using the Tmobile csc to get Volte support..
I have US and international version, US version supports Volta same sim not supporting in international version... Problem is due to the Csc configured to the international version won't support Tmobile Volta..
Unless we have success in flashing tmobile Csc it won't work same as WiFi calling
Sent from my SM-G955F using Tapatalk
Click to expand...
Click to collapse
Goes back to what I said. Wouldn't matter the band. If the support isn't there which as you pointed out it doesn't support the CSC.
Sent from my SM-G955U using Tapatalk
ShrekOpher said:
Yeah don't listen to this guy. The F model is exynos correct? That means no Tmobile software.
The F model you bought might be region locked so it may not work in the USA right now without unlocking it. I know there have been other threads about this not sure if a solution has been found or not.
Click to expand...
Click to collapse
whoops lol. Forgot if F or FD variants of the S8+ uses Exynos 8895, and U.S. models use Snapdragon 835.

Anyone try to unlock the 4g bands with success?

I love the phone and the size but only getting H+ sucks. Has anyone tried to unlock the 4g bands?
bmob222 said:
I love the phone and the size but only getting H+ sucks. Has anyone tried to unlock the 4g bands?
Click to expand...
Click to collapse
I tried. Not possible. I got all the way to putting in the new values in the phone, but when you reboot it they go back to default. There is a fail safe in the kernel preventing it. need a custom kernel to do it successfully. Here is the thread that I was discussing back and forth with another member:
https://forum.xda-developers.com/zenfone-3/help/help-putting-phone-usb-diag-mode-t3571627
I am having no problem using 4G in Canada. I bought my phone in Malaysia.
yan99033 said:
I am having no problem using 4G in Canada. I bought my phone in Malaysia.
Click to expand...
Click to collapse
It all depends on the band the carrier is using. The phone doesn't have all LTE/4G bands unlocked. So if your carrier is using a band that is available on the phone then you are golden. For me the only band the phone has unlocked that AT&T uses for LTE is band 5. Half my city is band 5, and the other half is 2 and 17. So in the band 5 areas I have 4G, and in the 2 and 17 areas I have HSPA+
yan99033 said:
I am having no problem using 4G in Canada. I bought my phone in Malaysia.
Click to expand...
Click to collapse
The LTE bands in the U.S. are blocked. Back in the day we had same issue with the original Samsung Note 1 - in was only built originally for ATT. Eventually folks built roms/kernels that did the trick on T-MO.
So here's to hoping the same thing happens w/ our ZF3ultra
.
yan99033 said:
I am having no problem using 4G in Canada. I bought my phone in Malaysia.
Click to expand...
Click to collapse
I'm in Canada, service sucks but adore the actual device...need more bands opened!
Hi,
Could anyone provide "rfnv" files of Asus ZenFone 3 Ultra?
I trying unlock bands for Leeco Le 2 X520 so "rfnv" files of Asus ZenFone 3 Ultra will help me a lot.
Thank you for your attention.

ATT and Mi Mix 3

Hello XDA community,
I have a Mi Mix 3 Palace Edition phone and I am using AT&T for my carrier. The phone came with a Chinese ROM but I flashed it with a Global one. I have been trying to get 4G + LTE to work on the phone but so for all I am able to get is 3G. I have contacted ATT and was told that my account was not setup for it. So ATT's advanced technical support made sure the IME/my account on the phone was LTE enabled. I am still stuck on 3G. I have selected the correct APN for it but I do not connect.
What am I missing?
Preferred network Type?
preferred network LTE.
raven213 said:
Preferred network Type?
Click to expand...
Click to collapse
walkrye said:
preferred network LTE.
Click to expand...
Click to collapse
Did you checked if your apn is correct?
Try selecting 4G network manually. I faced issue like that initially with ATT MVNO. After seleting 4G network manually I am geetting 4G+
In the Settings, go to About Phone, and tap the storage until it brings you to the SIM and WiFi screen. Tap on the Phone Information for the SIM you are using and set that Network Type to UMTS/LTE.
AT&T blocks any device you did not purchase directly through them from using VoLTE and WiFi Calling. 4G is also LTE, so if you see the 4G icon, that is also LTE and 4G+ is also LTE-A.

T-Mobile US

Anyone using the Poco F2 Pro on T-Mobile in the US?
I am. Reception is no different than my T-mobile OP 7pro. The F2pro also don't have tmobile 5g bands.
I tried to reply on Reddit to your question, but guess it didnt show due to low post count. I'm using a Xiaomi Mi 10 Global in the USA and I have VoLTE enabled over a Tmobile MVNO. Wifi calling does not really work properly, at least with the provided IMS settings. As stated above, 5G will NOT work in the USA due to Xiaomi missing necessary USA 5G bands; and 4G LTE may be a hit or miss depending on your area. As long as you're not getting the phone for 5G, it's an excellent purchase! It's not going to be necessary to have a 5G enabled phone for many years anyways, 4G is really fast enough. Hope this helps
mookiexl said:
I am. Reception is no different than my T-mobile OP 7pro. The F2pro also don't have tmobile 5g bands.
Click to expand...
Click to collapse
Are you getting voLTE on T-Mobile? If so, did you have to use the dialer code to enable it?
xda-jimjongs said:
I tried to reply on Reddit to your question, but guess it didnt show due to low post count. I'm using a Xiaomi Mi 10 Global in the USA and I have VoLTE enabled over a Tmobile MVNO. Wifi calling does not really work properly, at least with the provided IMS settings. As stated above, 5G will NOT work in the USA due to Xiaomi missing necessary USA 5G bands; and 4G LTE may be a hit or miss depending on your area. As long as you're not getting the phone for 5G, it's an excellent purchase! It's not going to be necessary to have a 5G enabled phone for many years anyways, 4G is really fast enough. Hope this helps
Click to expand...
Click to collapse
Thanks for the info. I currently have a Mi 9 and have voLTE on T-Mobile and Fi (I did have to use the dialer code). I was just wondering if it's different for the F2 considering it lacks band 12 that the Mi 9 has. Looks like the Mi 10 global has the same bands as the F2, and you're getting voLTE, so I should be good. I also had a Mi A2 in the past, which had bands 2 and 4, which was fine, but voLTE wouldn't work, even with the dialer code. So calls defaulted to 3G, and I would constantly miss calls because it wouldn't ring. I just want to make 100% sure I can get voLTE with the F2 before buying.
Ulver said:
Are you getting voLTE on T-Mobile? If so, did you have to use the dialer code to enable it?
Click to expand...
Click to collapse
Yes I'm getting voLTE and voWifi. I used the dialer code but the funny thing is to enable both I actually had to disable them. Even though after the code I get a prompt that the they're disable they are actually enabled.
Ulver said:
Thanks for the info. I currently have a Mi 9 and have voLTE on T-Mobile and Fi (I did have to use the dialer code). I was just wondering if it's different for the F2 considering it lacks band 12 that the Mi 9 has. Looks like the Mi 10 global has the same bands as the F2, and you're getting voLTE, so I should be good. I also had a Mi A2 in the past, which had bands 2 and 4, which was fine, but voLTE wouldn't work, even with the dialer code. So calls defaulted to 3G, and I would constantly miss calls because it wouldn't ring. I just want to make 100% sure I can get voLTE with the F2 before buying.
Click to expand...
Click to collapse
No problem. I had Google Fi on my Pixel, then got the SIM to use for the Xiaomi Mi 10 Global and everything worked, but I just ended up going with another cheaper MVNO for Tmobile. The only complaint I have is generally I receive like 1-2 bars of reception in my house, when I go about 2 miles out it will jump up to 4+ bars. So when you receive your F2 Pro after setting up the APN settings, ensure in "preferred network type" it is 5G and not LTE! It will obviously not connect with 5G and default back to 4G LTE, but I had a random bug when setting it manually to 4G without voLTE, my phone calls would cut out at exactly 8minutes on the dot, NO Idea why that would happen, just giving you a warning lol. You don't need to use the dialer code by the way, you can set the "Use VoLTE" in the Mobile Network Settings and you will see a VoLTE button ontop. Have fun with your future F2, it's a great purchase .

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