T-Mobile Band 12 - ZTE Axon 7 Mini Questions & Answers

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!
Click to expand...
Click to collapse
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?
Click to expand...
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

Related

T-Mobile Band 12 Testing?

Has anyone actually tested a Moto X Pure 2015 in a T-Mobile LTE Band 12 area to see if the phone actually has T-Mobile Band 12 disabled, and how the phone handles that if so?
The Motorola website still shows LTE Band 12, with the footnote that it varies by carrier. Compare this with the Moto G, which initially showed Band 12 and then suddenly Band 12 disappeared from the Motorola specs page without any explanation from Motorola.
TIA...
I am currently on T-Mobile (Ting) in a band 12 active area, and I am only getting band 4.
I've been looking into activating all bands according to the details in some of these threads:
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
http://forum.xda-developers.com/showthread.php?t=1211157
http://forum.xda-developers.com/moto-x-2014/general/guide-xt1097-to-xt1095-nextel-t2972693
I updated the radio on my HTC with QPST, and it looks like it might be easier with moto since the motos have a special BP Tools mode in the fastboot.
My biggest concern is that we may need a custom kernel first if the base kernel has anti-tamper code.
After I first activated on ting, my phone was stuck in HSPA+ and would not connect via LTE.
I went into the engineering/field test mode using *#*#INFO#*#* (*#*#4636#*#*) and changed the "Set preferred network type" from WCDMA preferred to LTE/GSM auto (PRL).
I also turned off "IMS Registration Required" and turned on SMS over IMS.
There is a "Select Radio Band" feature in the menu that offers 3 choices for "Set GSM/UMTS Band". The options are USA Band, Cellular, and PCS.
I have read that if you make a band selection, the only way to get it back to unspecified is to reflash your radio. This seems particularly bad for those in europe, who often disable their radios by selecting "USA Band".
I of course discovered this after already selecting a preferred band.
Maybe someone with experience with updating the radio on a Moto can weigh in here.
I would like to reflash my radio preference back to unspecified, but I'm not sure how to go about it, or if it actually matters.
Motorola says they are going to add LTE Band 12 for T-Mobile in a software update to Moto X Pure 2015.
When, is the question.
Thanks for letting us know your real world test results.
ErikHellstrom said:
I am currently on T-Mobile (Ting) in a band 12 active area, and I am only getting band 4.
Maybe someone with experience with updating the radio on a Moto can weigh in here.
Click to expand...
Click to collapse
You need to basically repeat the process you did for your HTC. Enter BPTools mode. Make sure you have the drivers installed (Moto, and either their USB modem driver, or your HTC driver will work as well) and then use QXDM to update your band preference for LTE. Also, make sure to use an up to date QXDM, otherwise it won't work. From what I've heard, it's hit or miss with the 810, because they have updated their anti-tampering code from the 805, and while I haven't tried this yet myself (I'm waiting on Moto update, but only so much longer...) this would be how to get it going. Good luck!
Edit: Also, if you meant just getting your stock settings for your radio back, you can just reflash stock. If you're unlocked (bootloader), you can root, install TWRP recovery and then reflash.
ErikHellstrom, your post was about your HTC?
I am looking for real world results with stock Moto X Style (Pure) 2015 edition phones, with the initial release Android 5.1.1 shipping on these phones in September 2015.
Again: On T-Mobile, LTE Band 12, in areas with Band 12.
Thanks again for any info that anyone can provide.
Tinkerer_ said:
ErikHellstrom, your post was about your HTC?
I am looking for real world results with stock Moto X Style (Pure) 2015 edition phones, with the initial release Android 5.1.1 shipping on these phones in September 2015.
Again: On T-Mobile, LTE Band 12, in areas with Band 12.
Thanks again for any info that anyone can provide.
Click to expand...
Click to collapse
No I am on MXPE1575, with T-Mobile(Ting) in a Band 12 area.
Motorola has announced plans to roll out the activation of Band 12 and VOLTE to MXPE phones, but not a date.
My understanding is that calls will fail if you are connected to Band 12 without VOLTE, because you can connect to a tower too far away to handle a traditional call.
So if you activate band 12 without activating VOLTE you may end up connecting to towers that cannot facilitate a phone call for you. Although some have said that your phone will hop over to band 4 for call notification. I don't know much about this, so I can't verify.
You should be able to edit your radio using specialized Qualcomm software to activate the radio bands and possibly the VOLTE, if you don't want to wait for the official update from motorola.
Matt at Moto forums seems to be indicating that the Moto Band 12/VOLTE activation updates will be coming quite soon.
Is there any quote or article that says it? If it's true, then I will probably end up getting the phone.
komugi said:
Is there any quote or article that says it? If it's true, then I will probably end up getting the phone.
Click to expand...
Click to collapse
https://forums.motorola.com/comment/977403
Sent from my XT1575 using Tapatalk
any updates on this? i like my moto x pure so far but i'm in a band 12 area and would like to get the most out of it. i'm coming from a samsung S5 and i don't believe that had band 12
fiftythreefly said:
any updates on this? i like my moto x pure so far but i'm in a band 12 area and would like to get the most out of it. i'm coming from a samsung S5 and i don't believe that had band 12
Click to expand...
Click to collapse
patience brother I am a Verizon customer and also waiting to try out tmobile (again) but with band12 to see how it works.
I test from time to time using simple mobile preloaded sim on ebay they sell on ebay for few bucks 1 place where I am almost everyday has 1 bar and no service and that is in Queens,NY inside the building but once outside signal is perfect.
patt2k said:
patience brother I am a Verizon customer and also waiting to try out tmobile (again) but with band12 to see how it works.
I test from time to time using simple mobile preloaded sim on ebay they sell on ebay for few bucks 1 place where I am almost everyday has 1 bar and no service and that is in Queens,NY inside the building but once outside signal is perfect.
Click to expand...
Click to collapse
i'm just excited is all i've been with tmobile since i was 15 years old (nearly 20 years ago) and am hoping this new band 12 improves upon their service around here, but at the moment i get LTE with speeds of about 30mb/s so no complaints, but if i go south about 10 miles i lose service
Since moto has gone pure Android, can we use regular fastboot or do they still use moto-fastboot? If regular fastboot we can just flash a radio.img correct?
I just ordered a Nexus 6 (killer deal on ebay for $300 + free shipping) ... curious to see if I'll notice a big difference in signal strength/quality seeing it has Band 12 enabled. If I do, I guess I'll have a choice to make LOL
YankInDaSouth said:
I just ordered a Nexus 6 (killer deal on ebay for $300 + free shipping) ... curious to see if I'll notice a big difference in signal strength/quality seeing it has Band 12 enabled. If I do, I guess I'll have a choice to make LOL
Click to expand...
Click to collapse
Never wanted nexus 6 and never will because it's just to big.
The reason why I am waiting with tmo is I need to test service at 1 place where I spend a lot of time I will actually join my friend who is on the 100$/unlimited so my line will be just 40+ tax. Unlimited everything.
Yeah, its definitely wide ... But it may likely turnout to be a "rental" unless I see substantial signal improvements
Sent from my XT1575 using Tapatalk
any updates on this front yet?
thanks!
Any fix for this?
ErikHellstrom said:
I am currently on T-Mobile (Ting) in a band 12 active area, and I am only getting band 4.
I've been looking into activating all bands according to the details in some of these threads:
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
http://forum.xda-developers.com/showthread.php?t=1211157
http://forum.xda-developers.com/moto-x-2014/general/guide-xt1097-to-xt1095-nextel-t2972693
I updated the radio on my HTC with QPST, and it looks like it might be easier with moto since the motos have a special BP Tools mode in the fastboot.
My biggest concern is that we may need a custom kernel first if the base kernel has anti-tamper code.
After I first activated on ting, my phone was stuck in HSPA+ and would not connect via LTE.
I went into the engineering/field test mode using *#*#INFO#*#* (*#*#4636#*#*) and changed the "Set preferred network type" from WCDMA preferred to LTE/GSM auto (PRL).
I also turned off "IMS Registration Required" and turned on SMS over IMS.
There is a "Select Radio Band" feature in the menu that offers 3 choices for "Set GSM/UMTS Band". The options are USA Band, Cellular, and PCS.
I have read that if you make a band selection, the only way to get it back to unspecified is to reflash your radio. This seems particularly bad for those in europe, who often disable their radios by selecting "USA Band".
I of course discovered this after already selecting a preferred band.
Maybe someone with experience with updating the radio on a Moto can weigh in here.
I would like to reflash my radio preference back to unspecified, but I'm not sure how to go about it, or if it actually matters.
Click to expand...
Click to collapse
I also made the same mistake... by pressing "USA Band" outside of the US. Any way to fix this?
I have also made the same mistake of clicking on one of 3 choices in "Set GSM/UMTS Band" menu.
Does anyone know how to revert back the setting? My 2G and 3G calling is not working since then. Only LTE is working.
Thank you in advance!
Ruby H said:
I also made the same mistake... by pressing "USA Band" outside of the US. Any way to fix this?
Click to expand...
Click to collapse
Reflash the radio via the Restore to stock tool, or one of the MM radios. There is an MM radio with TruPure,
ErikHellstrom said:
Reflash the radio via the Restore to stock tool, or one of the MM radios. There is an MM radio with TruPure,
Click to expand...
Click to collapse
Sorry, but I'm a nubee at this :-|
Can you please send a link to 'Restore to stock tool'. Is 'MM Radio' also a software package?
Will reflashing my Moto X-PE (XT-1575) erase the IMEI number?
Will reflashing the phone void my warranty with Motorola?
Tnx!

Wanted: Tester with 6045i in a Band 12 LTE service area.

I'm looking into the possibility of creating a hybrid radio that would allow us to gain the benefits of the newer enhancements to the 6.0.1 radio while still keeping band 12 lte. The tester would be flashing test radio's over and over and checking to see if they were able to connect to band 12. Rinse. Lather. Repeat. Nothing glamorous about it but you'd be helping your fellow band 12 users get the best radio they can get.
I'm not in a band 12 lte service area so am not able to test the proposed changes (which involve replacing one file in the modem image at a time until I find the magic 1 that gives us back lte band 12 assuming it's only 1 file).
It wouldn't be right away as I still have some research to do but thought I would toss this out early. If nobody is interested then I can skip the hours of work building 50 or 60 radio zips.
I'd help, but no lte band 12 here in Canada, 4, 40 and 42 only with Telus.
Muskoka said:
I'd help, but no lte band 12 here in Canada, 4, 40 and 42 only with Telus.
Click to expand...
Click to collapse
I have cricket it uses 12 band LTE which I had losted I will test....
I have a 6045i
Hello and a honor to finally be registered and responding to one of your posts have been reading for days giving myself a migraine about this phone need some help myself but would be honored to help am not super technical and dont know how to test to see if i am on band 12 i currently have two providers Consumer cellular and Net 10 both att towers in the Salt Lake City , Utah area i have checked a bit no actual maps but i know i get full lte service please let me know if you can tell me how to test this also.
Sorry to ask this here but i am currently on the new marshmallow update for the 6045I device and cannot for the life of me unlock the bootloader or root and or install twrp or cm on the phone with the missing lines in the adb fastboot please any assistance or options i have to get some help with this would be amazing thanks and hope to help!
dylan4200 said:
Hello and a honor to finally be registered and responding to one of your posts have been reading for days giving myself a migraine about this phone need some help myself but would be honored to help am not super technical and dont know how to test to see if i am on band 12 i currently have two providers Consumer cellular and Net 10 both att towers in the Salt Lake City , Utah area i have checked a bit no actual maps but i know i get full lte service please let me know if you can tell me how to test this also.
Sorry to ask this here but i am currently on the new marshmallow update for the 6045I device and cannot for the life of me unlock the bootloader or root and or install twrp or cm on the phone with the missing lines in the adb fastboot please any assistance or options i have to get some help with this would be amazing thanks and hope to help!
Click to expand...
Click to collapse
Band 12 LTE is predominantly used by T-Mobile however other carriers like Cricket apparently also use it. You can use an app called "LTE Discovery" to determine if your phone see's band 12 available. It has a log feature where you can turn on logging, drive around a bit then turn logging back off and look at what towers it found. Ideally my tester needs to be someone who is in band 12 and can see it because when the test version doesn't work they can go back to their OWN radio to confirm band 12 is back.
Here is T-mobile's band 12 coverage map..you can zoom into your area to see if they are reporting band 12 available: https://www.google.com/maps/d/viewer?mid=1LVpCwuJ_r0YGvouFoUJJLje5WXw&hl=en_US You would however have to have TWRP back before you'd be able to help test.
As for your other questions, I'd ask you to ask them in the marshmallow thread in android development. I just finished a post that describes the hoops you have to go through.
tech_yeet said:
I have cricket it uses 12 band LTE which I had losted I will test....
Click to expand...
Click to collapse
Your willingness is appreciated but it needs to be someone who can still GET band 12 so they can back up their modem and return to it if they have problems. This is also the only way they would detect if they were in a band 12 coverage area at the time they are testing before switching out to a test radio.

ZE552KL not connecting to LTE band 17.

Various websites confirm its compatible with LTE band 17. My other phone connects to it while in my house, but the Zenfone will mostly connect to HSPA+, or sometimes LTE band 2. I cannot get it to stay connected to LTE unless I get into town or on the highway. (Actually as I'm typing, it switched to LTE band 2, but in awhile it will go back to HSPA)
If I root is there any way to unlock band 17? I'm in the US and my carrier runs off AT&T towers. I got this phone specifically because band 17 reaches far off places much better but I am unable to use it.
Edit: I just realized the model number in the Android settings is "asus_Z012DA" and that apparently is not a US variant. I didn't know about the different variants at all. Am I out of luck?
ryan770 said:
Various websites confirm its compatible with LTE band 17. My other phone connects to it while in my house, but the Zenfone will mostly connect to HSPA+, or sometimes LTE band 2. I cannot get it to stay connected to LTE unless I get into town or on the highway. (Actually as I'm typing, it switched to LTE band 2, but in awhile it will go back to HSPA)
If I root is there any way to unlock band 17? I'm in the US and my carrier runs off AT&T towers. I got this phone specifically because band 17 reaches far off places much better but I am unable to use it.
Edit: I just realized the model number in the Android settings is "asus_Z012DA" and that apparently is not a US variant. I didn't know about the different variants at all. Am I out of luck?
Click to expand...
Click to collapse
Hi!
Your correct model for band 17 should be Z012DC, the same used in Brazil.
ryan770 said:
Various websites confirm its compatible with LTE band 17. My other phone connects to it while in my house, but the Zenfone will mostly connect to HSPA+, or sometimes LTE band 2. I cannot get it to stay connected to LTE unless I get into town or on the highway. (Actually as I'm typing, it switched to LTE band 2, but in awhile it will go back to HSPA)
If I root is there any way to unlock band 17? I'm in the US and my carrier runs off AT&T towers. I got this phone specifically because band 17 reaches far off places much better but I am unable to use it.
Edit: I just realized the model number in the Android settings is "asus_Z012DA" and that apparently is not a US variant. I didn't know about the different variants at all. Am I out of luck?
Click to expand...
Click to collapse
For the time being yes you are. There is a way to unlock LTE bands on Qualcomm devices, but it seems ASUS has a fail safe built into kernel preventing it at the moment. If there is ever a custom rom developed for your phone then it maybe possible to unlock band 17. Until then no. I have been trying on my Zenfone 3 Ultra. Got as far as entering in the values for the bands I want and when I reboot it resets them to default. You can read up on it here:
https://forum.xda-developers.com/zenfone-3/help/help-putting-phone-usb-diag-mode-t3571627
Me and another user have been working on it. Maybe it might work for your phone. Always a chance.
roosevelt84 said:
Hi!
Your correct model for band 17 should be Z012DC, the same used in Brazil.
Click to expand...
Click to collapse
Yeah I realize that now. Even though I'm stuck with my phone, I still can't find the z012dc for sale anywhere. Practically no seller online lists which variant it is. In fact, after a few hours of research, I never even knew there was specifically variants.
doctahjeph said:
For the time being yes you are. There is a way to unlock LTE bands on Qualcomm devices, but it seems ASUS has a fail safe built into kernel preventing it at the moment. If there is ever a custom rom developed for your phone then it maybe possible to unlock band 17. Until then no. I have been trying on my Zenfone 3 Ultra. Got as far as entering in the values for the bands I want and when I reboot it resets them to default. You can read up on it here:
https://forum.xda-developers.com/zenfone-3/help/help-putting-phone-usb-diag-mode-t3571627
Me and another user have been working on it. Maybe it might work for your phone. Always a chance.
Click to expand...
Click to collapse
Whoa thanks man. I'll keep checking back and maybe I'll try it myself. Seems you guys are close.
I must say though, this isn't a complete deal breaker, though I am stuck with this phone anyway. The Hspa network is actually FASTER than LTE band 17 in my house. I'm just afraid if I travel somewhere and only band 17 is available I might run into some trouble. But then again, 3g or Hspa might still be able to connect.

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.
Click to expand...
Click to collapse
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!
Click to expand...
Click to collapse
I didn't know that it is possible to make a call on Band 12 when phone doesn't support VoLTE.

V20 LTE Band and Compatibility (vs995, h910)

Hello everyone! I'll start by saying I've done a lot of reading and searching, and I can't find my answers, so that's why I'm posting.
I recently acquired two LG v20s, which I intend to use as my primary daily handsets. The models are the h910 (att) and VS995 (verizon). Both have TWRP and magisk etc. I love the phones so far and everything is peachy, except one ... sordof big question/issue. LTE bands!! I've seen several people on XDA talk about the bands but I can't determine a clear answer. My first and primary question is, DOES the h910 support band 12/17?!?! Using network signal guru app, band 12 is listed. From what I understand (from what I have read) band 12 IS supported, and 17 is actually a thing of the past. If your phone has band 12, it can pick up all band 17 towers no problem, essentially meaning 12 has replaced 17. However, my h910 WILL NOT use band 12. Not if I force it, not on its own, nada. This is in places where I know band 12(17) exists, and is the strongest signal. In fact virtually everywhere, around the area I live (chattanooga TN). What actually really surprises me is that the phone gets great LTE reception everywhere I am 95% of the time, without band 12/17. I've checked numerous times (its kindof an ongoing thing...) and I've gotten every single other band, (2,4,5,30) usually with great reception and acceptable or good network speed. But never band 12. I can hold my galaxy note 4 right next to it, and the note will almost always be using band 17, and the LG refuses. Again , I can lock bands with Network signal guru, and still no bueno. If I lock the lg on only band 12, it will simply revert to HSPA.
Does anyone else have experience with this? Are other h910 users able to get band 12? Could I have a faulty handset? Is it software or hardware related? Just curious if anyone else has any info that could be helpful. I have noticed people in other random forums saying their v20 gets poor signal compared to other ATT devices, and I'm wondering if this is why (no band 12). Most people wouldn't know how to check what bands they're getting... or even know what "bands" are at all.
And a quick question about the vs995... I put an att sim in it, and got absolutely no signal at all on any band. Whats up with that?
Thanks in advance folks.
Seems US telecom companies are just weird I have 3 V20 phones that I use as 4G modem when in the country. My Vs995 worked for this for years but suddenly will not use mobile data here in Norway, tried factory reset. 1 910 that does not get phone signal at all - gave up on it, transferred screen and case to the VS995 which was worn, had broken screen. My Korean F800 with android 9 works fine. US carriers place artificial locks on bands it seems.

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