WiFi calling, VoLTE and Band 12 support for T-Mobile - Nexus 6P Q&A, Help & Troubleshooting

Since some people are starting to receive their 6P's today figured I would ask if someone could check to see which of these are supported out of the box. I know on the 5X WiFi calling and VoLTE work but Band 12 does not. I figure the same for the 6P but given it ships a week later you never know.

There was a post by someone who got their hands on a device almost a week ago and he said that VoLTE and Wifi Calling works out of the box on T-Mobile, but there isn't band 12 support yet...I am sure we will get an update for that later like we did with the Nexus 6

Pecata said:
There was a post by someone who got their hands on a device almost a week ago and he said that VoLTE and Wifi Calling works out of the box on T-Mobile, but there isn't band 12 support yet...I am sure we will get an update for that later like we did with the Nexus 6
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Click to collapse
I kinda figured it would be case considering the 5X is the same way. I guess it was wishful thinking that maybe the 6P would get it out of the box since it technically shipped a week later. I guess I can be patient. Looking to leave Verizon for T-Mobile but I know from friends that at least in Houston band 12 makes a huge difference so won't make the move until that is active.

landale said:
I kinda figured it would be case considering the 5X is the same way. I guess it was wishful thinking that maybe the 6P would get it out of the box since it technically shipped a week later. I guess I can be patient. Looking to leave Verizon for T-Mobile but I know from friends that at least in Houston band 12 makes a huge difference so won't make the move until that is active.
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Yeah, where I am there isn't band 12 yet, so to me it doesn't matter... But I have heard as well that it makes a huge difference in buildings... I hope we get it here in Utah soon as well...
Sent from my Nexus 6 using Tapatalk

Is band 12 good enough to get service in a cave? Lol
Sent from my Nexus 7 using XDA Free mobile app

ggreenwood334 said:
Is band 12 good enough to get service in a cave? Lol
Sent from my Nexus 7 using XDA Free mobile app
Click to expand...
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LOL, it had been tested on Mars!

On reddit AMA, a google rep said band 12 would be functioning by ship date. Seeing as the 6P has been shipping has anyone been able to confirm band 12 support?

Bohemus said:
On reddit AMA, a google rep said band 12 would be functioning by ship date. Seeing as the 6P has been shipping has anyone been able to confirm band 12 support?
Click to expand...
Click to collapse
No band 12 yet.
https://www.reddit.com/r/Nexus6P/comments/3qfpy7/no_band_12_on_nexus_6p/

Band 12 Support
This seems to confirm Band 12 support after the latest OTA:
http://forums.androidcentral.com/nexus-6p/600054-t-mobile-band-12-supported-project-fi.html
Granted it's on Fi, but given that Fi runs partially on T-Mobile's backbone, seems like good info.

I'm not seeing band 12 with the 6P on T-Mobile.
Odd that it works with Fi and not T-Mobile.

Tmo has coverage areas where they are on band 12 only and federal law requires that if the phone shows a signal it has to be able to place an emergency call. Since the 6P does not have VoLTE yet it can show a signal but be incapable of making that emergency call which is why the phone is coming with 12 disabled on Tmo but enabled on fi where the limitation does not exist.

My Nexus 6P is not picking up Band 12 nor using VoLTE with my Project Fi SIM card nor T-Mobile SIM card. And it downloaded an update immediately upon activation. However,my Nexus 6 will pick up Band 12 on both Project Fi and T-Mobile SIM cards. I think the folks who have said they have Project Fi working on Band 12 were not reporting specifically about a 6P. Just in general that Project Fi works with Band 12.
My 6P does now work with Tmo WiFi calling though. I hope the Band 12 gets enabled soon. And also VoLTE, which doesn't work on B4 either currently. It's one of the reasons I bought this phone.

My 6P is making VoLTE calls on T-Mobile.

Does VoLTE imply band 12? Have you received an OTA recently?

I did receive an OTA when I first started the phone. I have no way to test if Band 12 is enabled because Band 12 is not yet deployed in my area due to an active TV station.

zenchowdah said:
Does VoLTE imply band 12? Have you received an OTA recently?
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Click to collapse
VoLTE is required for T-Mobile to approve the enabling of Band 12 but having it active doesn't mean it's active yet which appears to be the case here. VoLTE works but I am guessing there is a wait for T-Mobile to certify the device. Project Fi can use it now since Google is an MVNO and likely decided they can always switch to Sprint if a user is on Band 12 and lacks the ability to call.

I only get band 4. I know I can get band 12 because my n6 got it. I do get HD calling which I assume is volte. And I do use WiFi calling
Sent from my Nexus 6P using XDA Free mobile app

My phone doesn't want to enable WiFi calling. If it does decide to turn on, it has issues sending SMS, they fail. I did manage to fix all the issues by reseating my sim card, however the issues returned and wifi calling disconnected and hasn't come back since. This is really frustrating. I'm on MDB08K

FWIW, I'm currently on the phone with Google Tech Support. I don't get band 12 on either a T-Mo sim or Fi sim on my 6P. I, too, updated to MDB08K right out of the box. I believe I read on Reddit that someone dropped band 12 support after taking the update.
I tested this alongside my Galaxy S6, and that gets great band 12 reception. I might have Google send me a new device and refuse the update.

Wouldn't it be easier to flash factory image for that version to test?
easyc said:
FWIW, I'm currently on the phone with Google Tech Support. I don't get band 12 on either a T-Mo sim or Fi sim on my 6P. I, too, updated to MDB08K right out of the box. I believe I read on Reddit that someone dropped band 12 support after taking the update.
I tested this alongside my Galaxy S6, and that gets great band 12 reception. I might have Google send me a new device and refuse the update.
Click to expand...
Click to collapse

Related

VoLTE?

Does anyone know if the the Pure edition is going to support VoLTE on T-Mobile?
Would love to see confirmation on this as well as the other T-Mobile special features like wifi calling and advanced text messaging. If it's missing all of these carrier features it's definitely less appealing.
Sent from my SM-N910T
thegreatone3 said:
Would love to see confirmation on this as well as the other T-Mobile special features like wifi calling and advanced text messaging. If it's missing all of these carrier features it's definitely less appealing.
Sent from my SM-N910T
Click to expand...
Click to collapse
WiFi calling will come via Android M.
Sent from my Nexus 10 using Tapatalk
Welp, this has suddenly become a more important question than anybody previously thought.
T-Mobile has, uh, gently persuaded Motorola to remove Band 12 support on the Moto E and G models because they don't support VoLTE. So if you're planning on using the X Pure on T-Mo in an area where they make extensive or exclusive use of Band 12, it's going to matter a whole lot whether it can do VoLTE or not--and from what Moto is saying off the record, getting T-Mo's certification for VoLTE is neither easy nor cheap.
The ball is sort of in Motorola's court now, but they're not talking...
oh and I asked same question didn't see your thread, I would love to know if volte advanced calling will work with VZW. I enjoy it a lot.
I just made a comment regarding this in someone else's thread as well.
I've posed the question directly to Motorola (as well as a couple of reviewer sites) a couple of times myself and received no response yet, which is leading me to believe it will not.
For me, this is a deal breaker, as my purpose of getting this phone was the freedom to move to any carrier/uncarrier. Having test driven T-Mobile just before they opened up the 700mhz band 12 spectrum, I already know the building penetrating alone is poor enough in Kansas City without it that it's not practical for me to make that transition. Then there's the semi spotty service in the more outlying areas, which a lot of will be resolved by the 700mhz spectrum.
John Legere made a comment on Twitter which also leads me to believe that this device will not support FULL VoLTE on the 700mhz spectrum.
The only possibility that keeps me hopeful, is that Motorola MAY have decided to pay T-Mobile for certification for this to get the proprietary info required for true, Full VoLTE on their network.
Sent from my 831C using Tapatalk
I'm thinking that it should be possible to enable band 12 through NV editing (assuming it doesn't work out of the box). Wifi calling is coming natively through the M update. If Moto is smart, they'll roll their 12/volte update in with it, or sooner than that. Either way, I don't think it should be too difficult to get it going.
Aaaaaand, here's the answer: Out of the box, the Pure will not support VoLTE, and Band 12 (700 MHz) is being disabled for T-Mobile. They "expect" to support those things in the future, which is not the same as promising to support them.
AnalogXDA said:
Aaaaaand, here's the answer: Out of the box, the Pure will not support VoLTE, and Band 12 (700 MHz) is being disabled for T-Mobile. They "expect" to support those things in the future, which is not the same as promising to support them.
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Just curious, what's your source of this info?
I'm on US Cellular which also uses Band 12 LTE for rural coverage, so this is kind of a big deal to me. They can't just block it on TMO, as there aren't carrier-specific variants, and we are the only other US carrier affected.
borxnx said:
Just curious, what's your source of this info?
I'm on US Cellular which also uses Band 12 LTE for rural coverage, so this is kind of a big deal to me. They can't just block it on TMO, as there aren't carrier-specific variants, and we are the only other US carrier affected.
Click to expand...
Click to collapse
Source for T-Mobile Band 12 support via update:
https://forums.motorola.com/posts/cab8687a11?commentId=977403#977403
Also, you may be interested in this:
https://forums.motorola.com/posts/e570e4be47?commentId=978408#978408
YankInDaSouth said:
Source for T-Mobile Band 12 support via update:
https://forums.motorola.com/posts/cab8687a11?commentId=977403#977403
Also, you may be interested in this:
https://forums.motorola.com/posts/e570e4be47?commentId=978408#978408
Click to expand...
Click to collapse
Thanks for the info! This is a sticking point for many USCC users, and is often debated. They will allow Nexus 6 devices and iPhones purchased as unlocked devices to be used on their network. This is a very new policy, and communication has not been very efficient. It seems only some reps know about this.
I believe they are confusing "unlocked" with the previous paradigm of "GSM-only unlocked/international", because they are activating the N6 and iPhones left and right. Sometimes you just have to call back and get a different person who is willing to punch in the IMEI. They are often surprised themselves when it works.
Everything I have read has pointed to the answer that yes, they will activate this device. Employees, radio specifications, press releases, and this recent shift in their policy are all strong indicators. But we'll see, I know a few people who have ordered the device already to use on USCC's network, so I will report back when we know for sure.

Band 12 on T-Mobile Confirmed Working

So I finally got to an area where band 4 doesn't cover but band 12 does. (On a little vacation) I took 3 devices and tested all 3. The Mate 8, Note 4, and a OnePlus One. In the building the OPO did not have any service but my Mate 8 and Note 4 did. Put in the service code on the Note 4 and it said it was using Band 12 something the OPO lacks which is why there was no service. Yet worked perfectly fine on the Mate 8 with the same bars of signal as the Note 4.
Ephemera said:
So I finally got to an area where band 4 doesn't cover but band 12 does. (On a little vacation) I took 3 devices and tested all 3. The Mate 8, Note 4, and a OnePlus One. In the building the OPO did not have any service but my Mate 8 and Note 4 did. Put in the service code on the Note 4 and it said it was using Band 12 something the OPO lacks which is why there was no service. Yet worked perfectly fine on the Mate 8 with the same bars of signal as the Note 4.
Click to expand...
Click to collapse
Yep, band 12 works but VOLTE does not.
ajsmsg78 said:
Yep, band 12 works but VOLTE does not.
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Click to collapse
Didn't you post in one of threads a while back saying VOLTE did? If I'm not mistaken you also said band 12 would only work if T-Mobile certified it for our phones which won't happen since its not a US phone. I don't think its required to be certified or whatever that's just bull they tell their customers.
Ephemera said:
Didn't you post in one of threads a while back saying VOLTE did? If I'm not mistaken you also said band 12 would only work if T-Mobile certified it for our phones which won't happen since its not a US phone. I don't think its required to be certified or whatever that's just bull they tell their customers.
Click to expand...
Click to collapse
I thought VOLTE was working but it's not. I read somewhere that it had to be provisioned through tmobile but that's not true. I always had band 12 working on the Mate 8.

Project-Fi LG V20 versions/bands

Hello, I'm new to this stuff, but does anybody know what version of the V20 (TMo, Sprint, 996, etc) bands match Project-Fi's bands the closest? I have a T-Mo V2 currently on Fi but it sometimes doesn't ring when I receive phone calls. I'm guessing it is because it is missing a band or something (or maybe it's just a defective phone) and that's why the call doesn't go through.
Thanks in advance!
My understanding for it to work properly you need the pixel or the nexus 6 or might also include the nexus 5. Any other phone you will run in to issues as they say only the T-Mobile band will work. Might be why you are having issues with your lg phone.
Sent from my LG-H910 using Tapatalk
Thanks for the quick response. I know it isn't "officially" supported by Fi. I'm just trying to get as many bands as possible to work with. I understand I won't have quite as good of a signal as I would if I had a Pixel but I can't stand the huge bezels and smaller screen. I'm wondering if I might have better luck with the 996 instead of the TMo version.
Well I'm pretty sure Fi uses Sprint and T-Mobile at the same time. Since Sprint is a CDMA network, a T-Mobile phone isn't going to be able to use it, except for VoLTE, and even then probably not.
I don't know too much info about WCDMA (TMO) and CDMA (Sprint) band usage by the two carriers, so I can't give too much info there.
T-Mobile uses LTE bands 1(?), 2/4, 4/66, 12 (there's weird frequency stuff where B4 matches B2 on one of its frequencies. 4 and 66 use the same frequency range). Sprint uses 25, 26, 41 (don't ask, I have no idea, since VZ and ATT use 2,4,13 and 2,4,17 respectively, and 17 is a subset of 12).
The T-Mobile V20 supports 1,2,3,4,5,7,12,13,17,20 (some of these aren't mentioned by the FCC because they weren't tested, and LG's site doesn't mention them. T-Mobile has the full list, except for 17, but that's just 12 like I said earlier). WCDMA-wise, it supports I, II, IV, V. It has no CDMA support nor Sprint LTE support.
Sprint's variant supports LTE bands 2, 3, 4, 5, 7, 12/17, 25, 26, 41. It also happens to support all the WCDMA bands the T-Mobile variant does, plus the 900MHz frequency.
The US996 is the same story as the LS997, but with the addition of B13 and B20, minus B25 and B41. I can't find info, but I assume the WCDMA bands are the same.
Strangely enough, the LS997 has more current functionality in the US than the US996. I recommend you go for that. It is $793 instead of $770 like the TMO, but that's $7 less than the US996, and it'll work fine on T-Mobile, ATT (if you roam) and Sprint. Roaming on Verizon will be alright in most places, but the lack of VZ's low frequency band (13), it might have trouble in rural areas. Luckily, you probably won't have to worry about Verizon compatibility (and it probably supports it without mentioning it anyway).
Has anyone got T-Mobile to run on the Verizon v20...I can get text and call to work together all day ,or 4g works all day with out the others.If I get all 3 working at once it keeps cutting off network then comes back on..I've did the APN,and network.Just wondering if it has been done...
Sent from my Nexus 6P using Tapatalk
Thanks for the very in-depth post. I really appreciate your time and effort. I never even thought about the Sprint version until you said that. Will all those bands be active without unlocking the (Sprint) phone? If so, then that is the phone I'll get.
Thanks again for all the info!
Patrick
Zacharee1 said:
Well I'm pretty sure Fi uses Sprint and T-Mobile at the same time. Since Sprint is a CDMA network, a T-Mobile phone isn't going to be able to use it, except for VoLTE, and even then probably not.
I don't know too much info about WCDMA (TMO) and CDMA (Sprint) band usage by the two carriers, so I can't give too much info there.
T-Mobile uses LTE bands 1(?), 2/4, 4/66, 12 (there's weird frequency stuff where B4 matches B2 on one of its frequencies. 4 and 66 use the same frequency range). Sprint uses 25, 26, 41 (don't ask, I have no idea, since VZ and ATT use 2,4,13 and 2,4,17 respectively, and 17 is a subset of 12).
The T-Mobile V20 supports 1,2,3,4,5,7,12,13,17,20 (some of these aren't mentioned by the FCC because they weren't tested, and LG's site doesn't mention them. T-Mobile has the full list, except for 17, but that's just 12 like I said earlier). WCDMA-wise, it supports I, II, IV, V. It has no CDMA support nor Sprint LTE support.
Sprint's variant supports LTE bands 2, 3, 4, 5, 7, 12/17, 25, 26, 41. It also happens to support all the WCDMA bands the T-Mobile variant does, plus the 900MHz frequency.
The US996 is the same story as the LS997, but with the addition of B13 and B20, minus B25 and B41. I can't find info, but I assume the WCDMA bands are the same.
Strangely enough, the LS997 has more current functionality in the US than the US996. I recommend you go for that. It is $793 instead of $770 like the TMO, but that's $7 less than the US996, and it'll work fine on T-Mobile, ATT (if you roam) and Sprint. Roaming on Verizon will be alright in most places, but the lack of VZ's low frequency band (13), it might have trouble in rural areas. Luckily, you probably won't have to worry about Verizon compatibility (and it probably supports it without mentioning it anyway).
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preilly44 said:
Thanks for the very in-depth post. I really appreciate your time and effort. I never even thought about the Sprint version until you said that. Will all those bands be active without unlocking the (Sprint) phone? If so, then that is the phone I'll get.
Thanks again for all the info!
Patrick
Click to expand...
Click to collapse
Well unlocking doesn't actually unlock any bands. It just allows use on other carriers. These bands are always available for use. I don't know Sprint's unlocking policy, since I'm on T-Mobile, but check it out. It might be pre-unlocked like Verizon phones.
---------- Post added at 01:38 AM ---------- Previous post was at 01:32 AM ----------
kenbrownstone said:
Has anyone got T-Mobile to run on the Verizon v20...I can get text and call to work together all day ,or 4g works all day with out the others.If I get all 3 working at once it keeps cutting off network then comes back on..I've did the APN,and network.Just wondering if it has been done...
Click to expand...
Click to collapse
The VS995 supports all the GSM (2G) frequencies that T-Mobile uses, although it doesn't support as many as the T-Mobile variant, so Canadian coverage might be weird with traditional calls and texts.
It's also missing B4 UMTS, which is a pretty important one. If you're in an area without 2G but with HSPA+, you could have issues. It also doesn't support LTE B12, T-Mobile's low frequency band. This is important to have in cities.
I don't have 12 here...usually 2/4
Sent from my VS995 using Tapatalk
---------- Post added at 06:46 PM ---------- Previous post was at 06:46 PM ----------
Like I said all works just not together
Sent from my VS995 using Tapatalk
kenbrownstone said:
I don't have 12 here...usually 2/4
Sent from my VS995 using Tapatalk
---------- Post added at 06:46 PM ---------- Previous post was at 06:46 PM ----------
Like I said all works just not together
Sent from my VS995 using Tapatalk
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I'm thinking that's probably not a T-Mobile thing then. All stock messaging? Are your APNs right?
Yes sir all good..that's what is strange..I have moto z force running on T-Mobile no issue
Sent from my Nexus 6P using Tapatalk
kenbrownstone said:
Yes sir all good..that's what is strange..I have moto z force running on T-Mobile no issue
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
Have you tried a factory reset? Maybe a replacement phone? It might be worth it just to get the V20 from T-Mobile. I know it's more expensive, but it'll probably work.
Zacharee1 said:
Have you tried a factory reset? Maybe a replacement phone? It might be worth it just to get the V20 from T-Mobile. I know it's more expensive, but it'll probably work.
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I might just send back and get another...Bad thing is it came with a scratch so I was sending back anyway...A scratch over a inch long with a gap in the middle and it looks deep to were it messes with the colors on the screen...My nephew has a lg that has same issue..This is one nice phone though
Sent from my Nexus 6P using Tapatalk
kenbrownstone said:
I might just send back and get another...Bad thing is it came with a scratch so I was sending back anyway...A scratch over a inch long with a gap in the middle and it looks deep to were it messes with the colors on the screen...My nephew has a lg that has same issue..This is one nice phone though
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
It is a great phone. I just wish it was more consistent.
My first V20 had severe noise reduction on everything, and weird bumps on the transition from the screen glass to the plastic bezels. One side would be more pronounced than the other. My replacement is better in noise reduction, but it still has those uneven transitions.
My mom's V20 has almost no weird transition, but it does have some noise reduction issues. This phone is weird to say the least
So I just got a Sprint ls997 and when I take the Project-Fi sim card out of my working T-Mo v20 and put it in the Sprint V20 it just shows the invalid sim card icon in the upper right corner (nothing in notifications though). Does that mean I need to unlock the Sprint version of the phone? If so, why didn't I have to unlock the T-Mo version? I looked quickly and couldn't find any websites that would unlock the Sprint V20.
Thanks in advance!
Zacharee1 said:
Well I'm pretty sure Fi uses Sprint and T-Mobile at the same time. Since Sprint is a CDMA network, a T-Mobile phone isn't going to be able to use it, except for VoLTE, and even then probably not.
I don't know too much info about WCDMA (TMO) and CDMA (Sprint) band usage by the two carriers, so I can't give too much info there.
T-Mobile uses LTE bands 1(?), 2/4, 4/66, 12 (there's weird frequency stuff where B4 matches B2 on one of its frequencies. 4 and 66 use the same frequency range). Sprint uses 25, 26, 41 (don't ask, I have no idea, since VZ and ATT use 2,4,13 and 2,4,17 respectively, and 17 is a subset of 12).
The T-Mobile V20 supports 1,2,3,4,5,7,12,13,17,20 (some of these aren't mentioned by the FCC because they weren't tested, and LG's site doesn't mention them. T-Mobile has the full list, except for 17, but that's just 12 like I said earlier). WCDMA-wise, it supports I, II, IV, V. It has no CDMA support nor Sprint LTE support.
Sprint's variant supports LTE bands 2, 3, 4, 5, 7, 12/17, 25, 26, 41. It also happens to support all the WCDMA bands the T-Mobile variant does, plus the 900MHz frequency.
The US996 is the same story as the LS997, but with the addition of B13 and B20, minus B25 and B41. I can't find info, but I assume the WCDMA bands are the same.
Strangely enough, the LS997 has more current functionality in the US than the US996. I recommend you go for that. It is $793 instead of $770 like the TMO, but that's $7 less than the US996, and it'll work fine on T-Mobile, ATT (if you roam) and Sprint. Roaming on Verizon will be alright in most places, but the lack of VZ's low frequency band (13), it might have trouble in rural areas. Luckily, you probably won't have to worry about Verizon compatibility (and it probably supports it without mentioning it anyway).
Click to expand...
Click to collapse
preilly44 said:
So I just got a Sprint ls997 and when I take the Project-Fi sim card out of my working T-Mo v20 and put it in the Sprint V20 it just shows the invalid sim card icon in the upper right corner (nothing in notifications though). Does that mean I need to unlock the Sprint version of the phone? If so, why didn't I have to unlock the T-Mo version? I looked quickly and couldn't find any websites that would unlock the Sprint V20.
Thanks in advance!
Click to expand...
Click to collapse
The Sprint phone should be unlocked I think, but if it isn't, they will unlock it for you if you call. Any device made after February 2015 is like that for Sprint.
You're rebooting when you put the SIM In right?
Thanks, I called Sprint and they said it was still tied to the previous owners account. The previous owner said they paid it off and removed it from their account on 12/22 so they called and requested to have it unlocked. Sprint said it would take 3-5 business days after they did paid it off and it would automatically be unlocked. I'm not sure I believe that but we'll see in a couple days.
Yes, the battery was out when I installed the sim card so it was rebooted.
Thanks for all your help and advice!
Zacharee1 said:
The Sprint phone should be unlocked I think, but if it isn't, they will unlock it for you if you call. Any device made after February 2015 is like that for Sprint.
You're rebooting when you put the SIM In right?
Click to expand...
Click to collapse
Just a quick update, according to Sprint, the phone now should be unlocked. Is there a way on the phone I can tell if it is unlocked? When I put a sim card in from another carrier I'm getting the icon at the top of the screen of a sim card with an ! in it. When I try to make a phone call it does not go through. It also doesn't show my phone number or any other info related to the sim card on the phone's info screen.
Any advice?
preilly44 said:
Thanks, I called Sprint and they said it was still tied to the previous owners account. The previous owner said they paid it off and removed it from their account on 12/22 so they called and requested to have it unlocked. Sprint said it would take 3-5 business days after they did paid it off and it would automatically be unlocked. I'm not sure I believe that but we'll see in a couple days.
Yes, the battery was out when I installed the sim card so it was rebooted.
Thanks for all your help and advice!
Click to expand...
Click to collapse
preilly44 said:
Just a quick update, according to Sprint, the phone now should be unlocked. Is there a way on the phone I can tell if it is unlocked? When I put a sim card in from another carrier I'm getting the icon at the top of the screen of a sim card with an ! in it. When I try to make a phone call it does not go through. It also doesn't show my phone number or any other info related to the sim card on the phone's info screen.
Any advice?
Click to expand...
Click to collapse
You should try rebooting if you haven't.
Thanks, I should have said in the last post that I've tried battery pulls and even a factory reset.
Zacharee1 said:
You should try rebooting if you haven't.
Click to expand...
Click to collapse
preilly44 said:
Thanks, I should have said in the last post that I've tried battery pulls and even a factory reset.
Click to expand...
Click to collapse
Hmm. Maybe call Sprint again. It sounds like the unlock may not have been processed.

Does the Xperia X Compact support band 12 and VOLTE on TMobile (with latest update)?

I have spent the better part of an hour searching for a specific answer to these questions. So far, I have found two sources that claim band 12 works on Tmo. However I have only seen one review on Amazon from a couple weeks back that claim the phone does not support volte on Tmo. If it doesn't, that's a deal breaker for me. Can anyone, with the latest update, confirm or deny whether B12 and VOLTE on Tmo is working or not. Thanks very much in advance.
At *#*#4636#*#* testing menu there is band selector for United States and Japan
For sure at Tmo US if there is certification for this handset, VoLTE should be supported
regards,
mx597turbo said:
I have spent the better part of an hour searching for a specific answer to these questions. So far, I have found two sources that claim band 12 works on Tmo. However I have only seen one review on Amazon from a couple weeks back that claim the phone does not support volte on Tmo. If it doesn't, that's a deal breaker for me. Can anyone, with the latest update, confirm or deny whether B12 and VOLTE on Tmo is working or not. Thanks very much in advance.
Click to expand...
Click to collapse
To the best of my knowledge band 12 works. Multiple people here have even posted screenshots with the phone operating on Band 12. Sadly I live in the Chicago area and we are the the last major city to get Band 12. So I cannot personally verify it since it isn't up and running here yet. As for VoLTE that is a two way street. Lately Sony has been working with various providers to get it enabled. Basically it's all good on their end to a degree but for a phone to operate on VoLTE the carrier provider (in this case Tmo) must also flip a switch on their end as well. So in the end yes it probably can but no clue if we will ever get it here in the states. The following is to a link that explains the current situation. http://www.xperiablog.net/2016/11/30/sony-to-add-volte-support-to-xperia-x-concept-shortly/
P.S. Side note the phone info does have a switch for enabling VoLTE provisioning. However for now it does nothing (simply switches back to default radio when exiting the screen).
Oddly enough the switch got turned on for Band 12 in the Chicago area today. And yes it works and it works on UK firmware too.
Halftrack said:
Oddly enough the switch got turned on for Band 12 in the Chicago area today. And yes it works and it works on UK firmware too.
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If you could answer couple of questions that would make things easier for me to get this phone.
1) So when your phone is on band 12 and you make a call, does it stay on that band or goes to band 4?
2) VoLTE is working properly?
3) Any word about having WiFi calling available?
Band 12 works fine. No volte. Other than that it's been flawless on tmobile!
davwman said:
Band 12 works fine. No volte. Other than that it's been flawless on tmobile!
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I didn't know that it is possible to make a call on Band 12 when phone doesn't support VoLTE.

T-Mobile Band 12

Can anyone verify this actually works? Got this phone with the intention of having better coverage from band 12, but i've never seen lte discovery show anything but band 4.
I'm on the stock rom w/ magisk, anyone have advice?
Hi,
Can you help me to understand the difference between th band 12 and band 4? I am green to this.
Thanks advance!
William Guo said:
Hi,
Can you help me to understand the difference between th band 12 and band 4? I am green to this.
Thanks advance!
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In short, band 12 is a low frequency signal. The towers can broadcast huge coverage areas with the low frequency at the cost lower speed than their band 4 coverage areas. Band 12 for is great at penetrating buildings with thick walls.
Very few phones support this freq on T-mobile and I was hoping the mini could do it.
googletermsofservice said:
Can anyone verify this actually works? Got this phone with the intention of having better coverage from band 12, but i've never seen lte discovery show anything but band 4.
I'm on the stock rom w/ magisk, anyone have advice?
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Click to collapse
Are you testing it in the same place(s) you've had other phones show band 12 on LTE discovery? Officially it should work as of the Jan 2017 update. I'm pretty sure I have had it show band 12 when I was on stock (not rooted). I don't have a way to verify this now as my Mini is on LOS which currently does not support band 12 nor Wi-Fi calling. It's also my "secondary" phone until I get time to return it to stock (or LOS gets that functionality).
Sent from my Robin using XDA Labs
@googletermsofservice,
Thank you very much! Are there many service provider offer band 12 now? I mean, many providers such T-Mobile, ATT etc all offer band 12?
googletermsofservice said:
Can anyone verify this actually works? Got this phone with the intention of having better coverage from band 12, but i've never seen lte discovery show anything but band 4.
I'm on the stock rom w/ magisk, anyone have advice?
Click to expand...
Click to collapse
Does your phone stay on LTE when making a call (VOLTE)? If yes, the phone is working on band 12.
According to these website, the A7M should work with Band 12 and VOLTE & WFC:
https://www.androidpolice.com/2017/...ini-t-mobile-volte-december-security-patches/
http://www.spectrumgateway.com/compatible-phones
You need to make sure your phone is on at least the Dec update, if not newer.
Spectrum gateway is pretty reliable. I would use them as a first resource when considering a non-Tmo phone. I am supposed to receive this phone tomorrow. Will update if B12/VOLTE/WFC works...
I got the phone today. I can confirm that both VOLTE and WiFi calling work on TMobile after installing the update from the ZTE website here: https://www.zteusa.com/axon-7mini#support

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