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ATT Fuze ROM Questions

All,
I currently have an unbranded/unlocked HTC Tilt that I imported from the UK when they first came out about a year ago, well before ATT started selling their version of the Tilt. Mine has the front camera, etc.
As I understand it, ATT must have made some sort of deal with HTC on the Raphael (Fuze) because the Touch Pro I bought (and have since returned) would not support all of the 3G bands here in the states. I could only get EDGE.
I really want to get the new Fuze, but I am concerned about the limitations ATT is going to introduce on the ROM of this device, and I wouldn't buy the ATT version if there was another way to get the device with the appropriate US 3G band support.
So, my questions are:
1. Proxy Server settings: Is this available on the Fuze ROM? The Tilt I have now allows me to uncheck the "use proxy server" on my MediaNet connection profile. This is an important setting for me to have, as without it I can't get my Slingbox client and Newsbreak to work properly if it is enabled or not available to disable.
2. Internet sharing: Are the rumors of this being removed true? I hear that they pulled it. ATT is starting to look like Verizon with their ROM limitations. If they did pull the internet sharing app, can you copy it from another device or will applications like PDANet or WMWiFiRouter work in it's absence?
I think that is all I need to know for now. Thanks in advance for any assistance!
-Rob

robroy90 said:
All,
I currently have an unbranded/unlocked HTC Tilt that I imported from the UK when they first came out about a year ago, well before ATT started selling their version of the Tilt. Mine has the front camera, etc.
As I understand it, ATT must have made some sort of deal with HTC on the Raphael (Fuze) because the Touch Pro I bought (and have since returned) would not support all of the 3G bands here in the states. I could only get EDGE.
I really want to get the new Fuze, but I am concerned about the limitations ATT is going to introduce on the ROM of this device, and I wouldn't buy the ATT version if there was another way to get the device with the appropriate US 3G band support.
So, my questions are:
1. Proxy Server settings: Is this available on the Fuze ROM? The Tilt I have now allows me to uncheck the "use proxy server" on my MediaNet connection profile. This is an important setting for me to have, as without it I can't get my Slingbox client and Newsbreak to work properly if it is enabled or not available to disable.
2. Internet sharing: Are the rumors of this being removed true? I hear that they pulled it. ATT is starting to look like Verizon with their ROM limitations. If they did pull the internet sharing app, can you copy it from another device or will applications like PDANet or WMWiFiRouter work in it's absence?
I think that is all I need to know for now. Thanks in advance for any assistance!
-Rob
Click to expand...
Click to collapse
why dont you just flash a new rom to it?
internet sharing is there you just have to open from file explorer
and the NA touch pro will be available after the fuze with 3G

I thought about that...
Ok, I had considered that, but if I do flash a ROM, which one?
If I flash it, will it have the appropriate application/registry entries to support the bands for proper 3G operation here in the States?
GRRRRR.... why do they pull this crap? Apparently it is too much to ask to get a true "world" phone with all the bands in hardware and software!
-Rob

well i work for at&t and i was given the fuze as a demo device about a month ago and have since decided to keep it (kind of a nice thing). you can do what i just did to mine. I flashed it with HTC firmware, then flashed the at&t radio's onto it. I was also given a link to a cab file that switches the keyboard to the at&t layout (my only gripe change).
The onlything i see intresting is the Fuze's we got in last week, when i booted one up and played with it for a customer, i noticed they have a 1.95 SPL they are shipping with. wonder if that will effect flashing to the unsigned spl. And i will say, They didnt trim much out from original software, however they gave it the good ole' at&t bloatware.

waterhurley said:
well i work for at&t and i was given the fuze as a demo device about a month ago and have since decided to keep it (kind of a nice thing). you can do what i just did to mine. I flashed it with HTC firmware, then flashed the at&t radio's onto it. I was also given a link to a cab file that switches the keyboard to the at&t layout (my only gripe change).
The onlything i see intresting is the Fuze's we got in last week, when i booted one up and played with it for a customer, i noticed they have a 1.95 SPL they are shipping with. wonder if that will effect flashing to the unsigned spl. And i will say, They didnt trim much out from original software, however they gave it the good ole' at&t bloatware.
Click to expand...
Click to collapse
your store got multiple fuzes in??
and heres a question about bloatware on the fuze
with my 8525 whenever i hard reset i let it do the first customization to set the device up but i soft reset when it begins the 2nd since that is when att crap is loaded. does the fuze have a similar setup? or all at once

lbhocky19 said:
your store got multiple fuzes in??
and heres a question about bloatware on the fuze
with my 8525 whenever i hard reset i let it do the first customization to set the device up but i soft reset when it begins the 2nd since that is when att crap is loaded. does the fuze have a similar setup? or all at once
Click to expand...
Click to collapse
All the configuration is done during one customization screen. A soft reset to kill the bloat must be done before you see the "3...2...1..." countdown.

NotATreoFan said:
All the configuration is done during one customization screen. A soft reset to kill the bloat must be done before you see the "3...2...1..." countdown.
Click to expand...
Click to collapse
thank you
now with my 8525 i found if i cancelled the first one it messed up stuff and the phone didnt work right
if i cancel it on the fuze does everything still work and simply get rid of the att crap?

robroy90 said:
All,
I currently have an unbranded/unlocked HTC Tilt that I imported from the UK when they first came out about a year ago, well before ATT started selling their version of the Tilt. Mine has the front camera, etc.
As I understand it, ATT must have made some sort of deal with HTC on the Raphael (Fuze) because the Touch Pro I bought (and have since returned) would not support all of the 3G bands here in the states. I could only get EDGE.
I really want to get the new Fuze, but I am concerned about the limitations ATT is going to introduce on the ROM of this device, and I wouldn't buy the ATT version if there was another way to get the device with the appropriate US 3G band support.
So, my questions are:
1. Proxy Server settings: Is this available on the Fuze ROM? The Tilt I have now allows me to uncheck the "use proxy server" on my MediaNet connection profile. This is an important setting for me to have, as without it I can't get my Slingbox client and Newsbreak to work properly if it is enabled or not available to disable.
2. Internet sharing: Are the rumors of this being removed true? I hear that they pulled it. ATT is starting to look like Verizon with their ROM limitations. If they did pull the internet sharing app, can you copy it from another device or will applications like PDANet or WMWiFiRouter work in it's absence?
I think that is all I need to know for now. Thanks in advance for any assistance!
-Rob
Click to expand...
Click to collapse
Rob-
I bought my Fuze off eBay so I can't swear that it is the same version as what will ship but I'm pretty sure that it is.
On mine, you can check or uncheck "use proxy server" in the Media Net settings just like on your Tilt. Also, mine DOES include the Internet Sharing. I haven't had a chance to test it out yet, but since it's there I'm guessing it works.

Internet Sharing is in the official AT&T ROM. As a matter of fact, when you connect the USB cable, you get 2 choices: Activesync or Internet Sharing. No Wireless Modem crap on the Fuze.

lbhocky19 said:
why dont you just flash a new rom to it?
internet sharing is there you just have to open from file explorer
and the NA touch pro will be available after the fuze with 3G
Click to expand...
Click to collapse
Where did you find out that there will be a NA Touch Pro after the Fuze is released?

[Q] What is the best CDMA phone that can be used as a Mobile Internet Device?

Verizon and other CDMA phones tend to be cheaper than their GSM counterparts because unlike GSM phones, you can't simply unlock the phone and insert a new SIM to switch carriers.
Just wondering if anyone decides to buy a mobile internet/multimedia access device and decides to buy an used CDMA touch phone for the purpose, which would be the best choice?
A mobile internet/multimedia device is something like iPod Touch or the Archos series. They are small tiny device which can play songs, videos and allow you to access the web.
And, yes, wifi is a must.
Add your answers and reasons. I'll add a poll later on.

So far, one of the best devices for mobile hotspot is the EVO3D. It is blazing fast and very stable. Obviously there is only a temp root out right now for it, but once the boot loader is unlocked and new ROMs are out, it will be, in my opinion, the best period!

shoestring789 said:
So far, one of the best devices for mobile hotspot is the EVO3D. It is blazing fast and very stable. Obviously there is only a temp root out right now for it, but once the boot loader is unlocked and new ROMs are out, it will be, in my opinion, the best period!
Click to expand...
Click to collapse
I guess you misinterpreted the question. Am talking about mobile multimedia/internet device. An alternative for iPod Touch or Archos MIDs. Not a mobile hot-spot device like MiFi.

[Q] CDMA/LTE Binaries & AOSP Roms?

I saw that the Binaries for GSM/LTE were posted, but didn't see anything for CDMA. I can't find the thread now, but I recall reading a post where somebody mentioned that AOSP ROMS wouldn't be fully functional on N5 phones on Sprint's network. Does anybody know what I'm talking about? If you do, please elaborate. I want to slap on AOKP or CM 11 once they are available. Since this is a Triband device, I hadn't consider AOSP ROMS would be an issue using Sprint.

It's disappointing isn't it ? Developers ignoring a genuine question because the lot if then don't care about CDMA even though it's a nexus and their supposed to improve upon the device and they completely alienated sprint users on aosp Roms. They refuse to even acknowledge LTE not working on aosp roms and don't even treat it as a bug.

mhsbrian said:
It's disappointing isn't it ? Developers ignoring a genuine question because the lot if then don't care about CDMA even though it's a nexus and their supposed to improve upon the device and they completely alienated sprint users on aosp Roms. They refuse to even acknowledge LTE not working on aosp roms and don't even treat it as a bug.
Click to expand...
Click to collapse
I have had the ****s of CDMA anyhow -- I'm tired of the locked down mentality. I use Ting (and love their service), but they use Sprint as their backbone and, just once, it'd be nice if I could use any damn phone I want simply by popping in a SIM and adjusting the APN settings. I think I need to try a decent ATT MVNO for a while. I returned my nexus 5 and will try again in January. The audio issues caused by software and manufacturing goofs are unacceptable to me. I'm more than happy to switch to a GSM Gnex for now, to get away from CDMA.

Is there a list of AOSP ROMs that will allow full functionality on Ting (or any CDMA network, if they're all the same)? Are there viable alternatives?
On my Galaxy S3, I ran a Touchwiz-based ROM to work around the issue. I don't mind using the stock ROM for now, but I'd like to know if I should just look for a new MVNO that won't cause these headaches.

Does Mi4 have LTE now?

Planning to buy a new Mi4 from kijiji. Wondering whether it supports LTE bands in Canada? I;'m with telus

Short answer. No, not yet.

veladem said:
Short answer. No, not yet.
Click to expand...
Click to collapse
OK.Thanks
Is this a software issue or the LTE version is a different hardware in the future? In other words, if i buy the mi4 now, will i be able to get LTE when its available?

Sadly it seems to be a hardware limitation. Xiaomi was smart when they made the phone and only have it what it needed unlike some companies that overlook the small things and pay in the end.

yes it does not. as no opomart and other sites are selling FDD-LTE version which 1700/2100 works perfect with ATT / T-Mobile in US

4G:FDD-LTE 1800(B3)/2100(B1)MHz

This may seem far fetched but I'll ask anyway. Is there a way to change the hardware frequencies set within the phone to match the connectivity frequencies that's in your area?

shakim24 said:
This may seem far fetched but I'll ask anyway. Is there a way to change the hardware frequencies set within the phone to match the connectivity frequencies that's in your area?
Click to expand...
Click to collapse
In theory, the chip should support them. It would be a matter of writing the specific band values into your phones memory (NV). However, this pre-supposes that the phone could be modified on that level to begin with, which is doubtful.
You would need:
Unlock/root
Custom rom
Custom kernel
QPST (for editing)
QXDM (write enabling)
access to switch usb diagnostic mode
The majority of the work would be getting around MIUI and Qualcomm's restrictions they implement in their code. While not impossible, as you can see, the changes required aren't necessarily for the faint of heart. I suppose one upside would be the phone doesn't cost an arm and a leg, so if you wound up with a brick, you might have an easier time bouncing back from the loss.

kibmikey1 said:
In theory, the chip should support them. It would be a matter of writing the specific band values into your phones memory (NV). However, this pre-supposes that the phone could be modified on that level to begin with, which is doubtful.
You would need:
Unlock/root
Custom rom
Custom kernel
QPST (for editing)
QXDM (write enabling)
access to switch usb diagnostic mode
The majority of the work would be getting around MIUI and Qualcomm's restrictions they implement in their code. While not impossible, as you can see, the changes required aren't necessarily for the faint of heart. I suppose one upside would be the phone doesn't cost an arm and a leg, so if you wound up with a brick, you might have an easier time bouncing back from the loss.
Click to expand...
Click to collapse
Thanks for the insight bro. You really broke down into detail what was needed to be done. Was scrolling around and found this thread http://forum.xda-developers.com/showthread.php?t=2871269. Would like your opinion on it. It's for unlocking LTE as well.

I think they released the LTE-FDD version , seach for it!

already got one with LTE...its out already

Hi, I don't know how helpful this is for you but I have bought two from China for myself and my wife. Although I have not tried on the MIUI OS, I have flashed AOSP on to both phones and they both work at least on O2 and EE. I am receive 4G on my EE Mi4, however my wife does not have a 4G sim so can not confirm hers but she does receive 3G signals.
O2s 4G sim did not receive 4G signals on my Mi4 though (reason for me switching)
Hope this helps you

Only bands 1, 3, 41

LTE Band 12, VoLTE, and T-Mobile

I am starting this thread, since there seems to be a lot of confusion around "newer" LTE bands, like Band 12 on T-Mobile, which apparently require a fully functioning and "approved" VoLTE phone to get reception.
There are various threads in device-specific forums, but they are not getting a lot of attention, and this is a significant enough problem that it should be more visible.
T-Mobile at this point has pretty fantastic coverage via the 700MHz Band 12 LTE network.
The only problem is that Band 12 requires the phone to be VoLTE "certified". The rumor was that phones could still connect to this band/LTE-network and send/receive data, but that they would fall back to alternative bands, even 3G or 2G, for phone calls. For a lot of people that would be "good enough" if not ideal.
Based on some recent testing, this is NOT CORRECT:
While phones may "sometimes" connect to Band 12 for data, the much more common scenario is apparently that the phone will disconnect from Band 12 almost immediately, or will refuse to connect to Band 12, and will instead default to an alternative LTE, 4G, 3G, or 2G connection.
In other words: even if you have perfect LTE Band 12 coverage (5/5 bars, or 100%), your "Band 12 capable" phone may instead try to connect to a really ****ty GPRS or EDGE tower that has barely any reception for the phone.
I recently encountered this with my Xperia X Compact while travelling: My phone would barely be able to connect to a T-Mobile tower with a GPRS data connection, while my wife's Moto G4 would get 5/5 or 100% LTE reception. Swapping SIM cards had the same result, so we know the problem rests with the phone.
Searching for "Available Mobile Networks" on my "band 12 capable" phone would show various T-Mobile 4G networks, but the phone would be unable to connect to them.
Talking to other Xperia X Compact owners, they have the same problem: the phone will sporadically connect to Band 12, but it is not a reliable connection (if the phone even connects) and it will (more likely) prefer other networks/bands/frequencies.
Based on the phone having the proper frequencies, I would assume that T-Mobile has some mechanism on some (or the majority of) towers where they disconnect non-VoLTE certified devices.
Anecdotally, I also had a similar issue with my previous phone - a Nexus 5x. The phone is even VoLTE certified, but when using Cyanogenmod/LineageOS, it would have really terrible reception, despite the location having almost perfect Band 12 coverage - LineageOS/CM does not (or had no) VoLTE support.
I have also tried "hacking" the X Compact to enable VoLTE support by adding the relevant lines to the build.prop and enabling the option under Settings and (*#*#4636#*#*) but this does not appear to make any difference.
A list of T-Mobile "VoLTE certified" phones can be found here:
http://www.spectrumgateway.com/compatible-phones
Would be great if anyone has any suggestions how to resolve this, or force the phone to prioritize Band 12, but it would otherwise appear that the only solution is to get the phone certified by T-Mobile (so much for net neutrality and open access).

I'm using an Xperia X Compact and my home market only has band 12 lte and I can't connect to it. Which means I'm always in 3g or roaming and rarely have data in buildings. It's maddening because I will only buy Sony. I think they are the only manufacturer making attractive handsets and the build quality is light years beyond well marketed, poorly constructed brands like Samsung and LG. But regardless of anyone's choice of manufacturer, a device with a functioning 700 mhz lte radio should function just fine on the corresponding network regardless of where it was purchased.
Would certifying this device and enabling VOLTE be particularly costly to Sony? Correct me if I'm wrong but based on internal components this device should be capable of this ja?
I think it wouldn't hurt to send petitions to both the manufacturer and T-mobile USA. This certainly doesn't help Sony in a market they are seriously struggling in. It also isn't very uncarrier to favor certain devices over others.
The only reason I switched from Verizon was the ability to choose my device. That and the things John Legere was doing to change the industry. I believed in what he was saying. But right now it isn't working for me and likely many others. He should know. I can say firsthand that the guy answers his emails. I think we need to show both parties that this is worth their attention.
---------- Post added at 01:09 AM ---------- Previous post was at 12:14 AM ----------
I should mention that after multiple calls to T-mobile tech support I received a cryptic call very late at night from someone high up in tech support.
Long story short he at least admitted that even though it wasn't a t mobile device and even though it didn't support VoLTE, it should still connect to band 12 just fine. He also said that they were having problems with this sort of thing in my area and that it should be resolved in a month. He also said my IMEI was logged and I would be given priority in the matter. Whatever that means.
I should also mention that was a month ago and he didn't have an email to give me. He did however give me a phone number (probably just the department) that I need to dig up.
Could just be a bunch of fluff because they are afraid to lose customers. Then again he was from tech support not customer retention. And as I said t mobile does listen to its customers.

POMF2K said:
I'm using an Xperia X Compact and my home market only has band 12 lte and I can't connect to it. Which means I'm always in 3g or roaming and rarely have data in buildings. It's maddening because I will only buy Sony. I think they are the only manufacturer making attractive handsets and the build quality is light years beyond well marketed, poorly constructed brands like Samsung and LG. But regardless of anyone's choice of manufacturer, a device with a functioning 700 mhz lte radio should function just fine on the corresponding network regardless of where it was purchased.
Would certifying this device and enabling VOLTE be particularly costly to Sony? Correct me if I'm wrong but based on internal components this device should be capable of this ja?
I think it wouldn't hurt to send petitions to both the manufacturer and T-mobile USA. This certainly doesn't help Sony in a market they are seriously struggling in. It also isn't very uncarrier to favor certain devices over others.
The only reason I switched from Verizon was the ability to choose my device. That and the things John Legere was doing to change the industry. I believed in what he was saying. But right now it isn't working for me and likely many others. He should know. I can say firsthand that the guy answers his emails. I think we need to show both parties that this is worth their attention.
---------- Post added at 01:09 AM ---------- Previous post was at 12:14 AM ----------
I should mention that after multiple calls to T-mobile tech support I received a cryptic call very late at night from someone high up in tech support.
Long story short he at least admitted that even though it wasn't a t mobile device and even though it didn't support VoLTE, it should still connect to band 12 just fine. He also said that they were having problems with this sort of thing in my area and that it should be resolved in a month. He also said my IMEI was logged and I would be given priority in the matter. Whatever that means.
I should also mention that was a month ago and he didn't have an email to give me. He did however give me a phone number (probably just the department) that I need to dig up.
Could just be a bunch of fluff because they are afraid to lose customers. Then again he was from tech support not customer retention. And as I said t mobile does listen to its customers.
Click to expand...
Click to collapse
Since I did encounter this also on my Nexus 5x with LineageOS, I doubt that what T-Mobile told you is true. They must be actively blocking these non-certified handsets, since the phone should just attempt connecting.

So who do we need to appeal to? T mobile or Sony.?

POMF2K said:
So who do we need to appeal to? T mobile or Sony.?
Click to expand...
Click to collapse
Both. Maybe also complain to the FCC - I thought that carriers needed to provide open access to their network. Verizon got into hot water for not doing so ...

Does your compact ever connect to lte for a few seconds after a reboot?
I might try to force LTE and restart and see if that has any effect.
I just flashed the UK. T mobile networks work just fine. Well except lte/4g but that was expected.

POMF2K said:
Does your compact ever connect to lte for a few seconds after a reboot?
I might try to force LTE and restart and see if that has any effect.
I just flashed the UK. T mobile networks work just fine. Well except lte/4g but that was expected.
Click to expand...
Click to collapse
It does connect sometimes but it then usually kicks down to Band 4 or a GSM band (HSDPA, UMTS, EDGE, or even GPRS).
I cannot find any info how to prioritize LTE bands, so I assume this is T-Mobile's band 12 cell tower's kicking the phone off when they notice that it is not VoLTE approved.

Interesting discussion on Howard forums....
http://www.howardforums.com/showthr...rtphones-with-band-12-LTE-w-o-VoLTE-now/page2

POMF2K said:
Interesting discussion on Howard forums....
http://www.howardforums.com/showthr...rtphones-with-band-12-LTE-w-o-VoLTE-now/page2
Click to expand...
Click to collapse
Interesting discussion though nothing new.
Yes, we know that Band 12 phones should be able to get a data connection, yet T-Mobile apparently actively disconnects them (or bars them from connecting), especially in areas where Band 12 would give you great coverage but there is no other coverage.
F Sony and F T-Mobile for this!
BTW: here is an article about the follow up model: https://arstechnica.com/gadgets/2017/08/sony-xperia-xz1-compact/
Please leave comments about Sony not getting their phones approved for VoLTE with T-Mobile and the phone therefore NOT REALLY WORKING with the carrier.

It would seem to me that the only solution to this problem would be either T-Mobile accepting a standard spec for VoLTE, they open source their code for VoLTE, or someone figures out how to implement VoLTE and trick T-Mobile to think it is an approved "whitelisted" phone.
Given that the T-Mobile network is getting worse and worse every day without Band 12 coverage, I find it really surprising that most people just don't seem to care. Does nobody use their phone outside of WiFi?

andTab said:
It would seem to me that the only solution to this problem would be either T-Mobile accepting a standard spec for VoLTE, they open source their code for VoLTE, or someone figures out how to implement VoLTE and trick T-Mobile to think it is an approved "whitelisted" phone.
Given that the T-Mobile network is getting worse and worse every day without Band 12 coverage, I find it really surprising that most people just don't seem to care. Does nobody use their phone outside of WiFi?
Click to expand...
Click to collapse
There is a standard spec, the problem is the certification. It requires a certificate from T-mobile to be used by the phone, which is gained through certification. And if SONY is detecting T-mobile at the modem level then there isn't anything a ROM can do with or without a ROM. I had a Z5, but this drove me crazy so I switched to a Pixel.
I wouldn't expect this to change based on SONY de-prioritizing the US phone market, so either upgrade to a new supported sony phone or move on (shrug)

sovanyio said:
There is a standard spec, the problem is the certification. It requires a certificate from T-mobile to be used by the phone, which is gained through certification. And if SONY is detecting T-mobile at the modem level then there isn't anything a ROM can do with or without a ROM. I had a Z5, but this drove me crazy so I switched to a Pixel.
I wouldn't expect this to change based on SONY de-prioritizing the US phone market, so either upgrade to a new supported sony phone or move on (shrug)
Click to expand...
Click to collapse
That can't be true.
I accept that T-Mobile may issue a certificate but that must be processed on the rom/OS/phone.apk level. Otherwise, every custom ROM on any certified phone would work. We all know that is not the case.
If it's the rom/OS/phone.apk though, why can't we hack a phone to work with TMUS / VoLTE?
I have an x compact and while it is the best device I have ever owned it is essentially unusable on T-Mobile or att.

andTab said:
That can't be true.
I accept that T-Mobile may issue a certificate but that must be processed on the rom/OS/phone.apk level. Otherwise, every custom ROM on any certified phone would work. We all know that is not the case.
If it's the rom/OS/phone.apk though, why can't we hack a phone to work with TMUS / VoLTE?
I have an x compact and while it is the best device I have ever owned it is essentially unusable on T-Mobile or att.
Click to expand...
Click to collapse
Because the SONY modem firmware doesn't even attempt to negotiate VoLTE, which does *not* happen in user space. It is likely possible to hack the qualcomm modem with QPST to enable this, but without documentation and correct values one will not get very far.

sovanyio said:
Because the SONY modem firmware doesn't even attempt to negotiate VoLTE, which does *not* happen in user space. It is likely possible to hack the qualcomm modem with QPST to enable this, but without documentation and correct values one will not get very far.
Click to expand...
Click to collapse
If it was the modem, then flashing a new system (eg custom ROM) should not make any difference.
I also have a Nexus 5x. With stock it is fantastic and uses VoLTE on T-Mobile. With LineageOS, it is useless on Band 12. SAME MODEM!
Experience therefore shows that it is the OS/System that somehow prevents this from working.

andTab said:
If it was the modem, then flashing a new system (eg custom ROM) should not make any difference.
I also have a Nexus 5x. With stock it is fantastic and uses VoLTE on T-Mobile. With LineageOS, it is useless on Band 12. SAME MODEM!
Experience therefore shows that it is the OS/System that somehow prevents this from working.
Click to expand...
Click to collapse
The Nexus 5x is a different phone made by a different manufacturer with a different firmware scheme. You cannot compare them directly.

I noticed that the XZ1 Compact says right on the website compatible with t mobile band 12 and wifi calling... this is infuriating. It should be easy for them to patch the Xperia x compact.
I would have never purchased this if I had known. Especially since they apparently flashed an update to my old t mobile z3 that allows voice over lte and band 12.

Sony X Compact
sovanyio said:
There is a standard spec, the problem is the certification. It requires a certificate from T-mobile to be used by the phone, which is gained through certification. And if SONY is detecting T-mobile at the modem level then there isn't anything a ROM can do with or without a ROM. I had a Z5, but this drove me crazy so I switched to a Pixel.
I wouldn't expect this to change based on SONY de-prioritizing the US phone market, so either upgrade to a new supported sony phone or move on (shrug)
Click to expand...
Click to collapse
It has to be on Sony, use the t-mobile BYOD app to check, I have a Huawei mate 9 that I just purchased, connects perfectly on band 12, VoLTE works just like it's supposed to. On a side note I went through three Sony phones before I bought this Huawei, had to return all three due to quality control issues, one had worst touches that made the phone unusable, one wouldn't pick up the SIM card, and the third wouldn't power on at all, thank good Amazon refunded my money on all three. They may have the Sony name on the phone, but they are still build by the lowest bidder in China and makes with Sony's name.

revjamescarver said:
It has to be on Sony, use the t-mobile BYOD app to check, I have a Huawei mate 9 that I just purchased, connects perfectly on band 12, VoLTE works just like it's supposed to. On a side note I went through three Sony phones before I bought this Huawei, had to return all three due to quality control issues, one had worst touches that made the phone unusable, one wouldn't pick up the SIM card, and the third wouldn't power on at all, thank good Amazon refunded my money on all three. They may have the Sony name on the phone, but they are still build by the lowest bidder in China and makes with Sony's name.
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See this: http://www.androidpolice.com/2015/0...cked-smartphones-and-yep-its-still-confusing/ It is up to an OEM to decide to go through this process per-phone. Since no US carrier carried the phone they didn't not bother spending the money or time to certify it. I loved the SONY design, but since they weren't supporting the market I had to abandon them for other phones.