Since it seems the XZ1C guys have figured out how to get TMo VoLTE/WiFi calling/fingerprint sensor working all together, I'm wondering if if may be applicable to a rooted XC?
https://forum.xda-developers.com/xperia-xz1-compact/help/volte-tmo-fingerprint-sensor-t3666387
Basically for the XZ1C, if you start on a non-US ROM, you can flash a OEM*****.sin file from the US rom and get TMo VoLTE and WiFi calling enabled, and retain the fingerprint sensor. I realize they're on 8.0, and we don't have an officially approved US version for TMo VoLTE, so may be different for us on 7.1.1, but anyone know if it may be possible to use this method to get TMo stuff working on an XC? Maybe adding the applicable lines of code to a file?
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With the S5 devices with the eMMC 15 chip to aquire an unlocked bootloader, which ROM's from other variants would they be able to use without issues. Just trying to get a thread going for users and Dev's to share their opinions for others to gain knowledge from. Along with Pro's and Con's and 'how to's'. Happy ROM'n
T-Mobile variant seems to be the most supported ROM-wise. It's not locked down to 5.0 TW ROM's like the G900V (Verizon Variant).
The Verizon variant is the most locked down.
That is the question and for any helpful users to post.. Which T-Mobile, Sprint, AT&T(if any) and other variant ROM's can we "safely" install on our device. And what are the Pro's and Con's and the fixes(if any).... i guess this is more like a R&D thread to where everyone can post anything that may be helpful to people having questions of which ROM is suitable since we're now new to the unlocked bootloader and hoping more(the eMMC 11's) will be able to be unlocked as well. I'm pretty new as far as setting up a "guide" type thread. But as info is passed out, I'll try to update the thread for information of the ROM's and Pro's and Con's about them.
leotakacs said:
T-Mobile variant seems to be the most supported ROM-wise. It's not locked down to 5.0 TW ROM's like the G900V (Verizon Variant).
The Verizon variant is the most locked down.
Click to expand...
Click to collapse
Well now that we have an unlockable bootloader... Well, that has to go to AT&T now
To my knowledge, most variants use a generic G900F rom, because those carriers strictly use GSM bands. Verizon and AT&T use CDMA bands, which aren't fully supported in these roms. @jrkruse has released patches (thanks ) that will help with compatibility, but I think these are confined to 5.X at the moment.
I **think** there may be some modifications made to Verizon & AT&T roms regarding firmware, but I can't be sure. It seemed there was more than just CDMA support in the zips provided by JrKruse.
When flashing a G900F rom (should be safe) without patching, you'll probably only have glitchy and cutting out 4G/LTE, with no calling or SMS. Some modifications of the APN settings can maybe help a little, not much. The use of third-party texting apps has been shown to provide some support, but not complete.
Of course, all of this is just based on my strange reasoning, I could be completely wrong on some parts.
Besides cell services, these roms will work fine. Quite fast, too.
As I have stated in the other thread, if a rom is 6.0 and not touchwiz as long as it has a dev build it will boot and work without much more than verifying the apns. 6.0 Touchwiz is simply a no go, just dont try it. It is not worth the headache to get it to work.
I know cm, aokp, aicp, and Resurrection remix all have dev builds there is a couple of others that I think but havent really looked.
@camcorder123 ATT doesnt use cdma technology, they were just dicks and locked the bootloader like Verizon.
@limeaide Oops, you're right about ATT. Sure, a dev build will be easy to run, the problem is that nobody makes them. We've got a few ported but no official developers (from what I know) are actively developing for the phone. That'll probably start up sometime soon but until then we need to find a way to make the generic roms work.
Upon further research, I think it's gonna be a *tad* harder to get G900F roms to work than I thought. The reason only LTE works is because the LTE standard requires a sim card, so there's no problem in getting the phone to read the card and connect to the tower. But, CDMA is separate from the LTE standard - each phone is whitelisted on Verizon's servers (I'm assuming with the IMEI number) and does not need a sim card to access voice and SMS. This is unlike GSM, where everything is through the sim.
So I dunno, we might be stuck for a while. I wouldn't flash roms made for variants other than the KLTE edition, it might be the same outcome even though they may support CDMA.
Hi all.
I have a G930P just unlocked (USB/hardware method via GSMZambia). Currently has older OTA-restricted ROM to allow the unlock.
I'd like to update to the newest G930U firmware to get rid of all the Sprint stuff.
We are Verizon (USA) customers, and will uset he phone on the VZW network. I have already confirmed this works after the unlock (using the SIM from my own VZW S7).
Question is:
Which G930U firmware do I use? on the download pages they are specified for Sprint, Veriozn, AT&T etc.
Do I use the G930U for VZW because that will be the carrier? What is teh difference between these, I assume it is the splash screen and which radios are set as the default?
Thanks
Wanted to follow up on this.
After some careful comparison I realized that ALL the "u" firmware files listed - for each of the different carriers - are in fact all the same file. Which make sense b/c it's intended for a phone that starts off life w/ possibility to go to any network.
So after putting the "u" firmware on my formerly Sprint phone, it works flawlessly on Verizon. As far as I can tell all the relative radio bands are working equally well as my other G930V (native Verizon) phone.
Hopefully this will be helpful to somebody else in the future....
who did you get lte and voice to work. for some reason i can only get one or the other to work. not both
DHG4DRAGON8 said:
who did you get lte and voice to work. for some reason i can only get one or the other to work. not both
Click to expand...
Click to collapse
I didn't do anything special at all.
I literally installed the reference ROM, and it worked. It has since auto-updated itself several times, and works flawlessly.
It's my wife's phone, I have a G930V w/ Verizon firmware etc (never done anything special w/ it) and the function the same. Just a few skin differences where Verizon has added extra stuff to mine AFAIK.
I've purchased an unlocked Verizon S7 Edge, model SM-G935V, but haven't received it yet. I'm an AT&T customer. The phone should work on AT&T's network since it's unlocked, but I just realized it'll probably still have Verizon-ified firmware, and might not work with certain AT&T-specific features like HD voice, video calling, or voicemail. How will the Verizon firmware behave when it's on the AT&T network? Can I install the latest AT&T firmware on this phone instead, using a similar method to what people are doing for the 935U firmware? I prefer a stock AT&T firmware rather than a beta or rooting. Thanks in advance!
There's another thread in this forum "Stock Firmware for SM-935A (AT&T)". Should I just flash that to my unlocked SM-935V, and essentially turn it into a 935A? I believe the hardware of all S7 Edge models is identical, so I'm hoping that will work.
I did this and applied the 7.0 update - and now I can't seem to revert to any other software. If I were you, I'd flash the U update and forget about carrier-specific garbage.
raduque said:
I did this and applied the 7.0 update - and now I can't seem to revert to any other software. If I were you, I'd flash the U update and forget about carrier-specific garbage.
Click to expand...
Click to collapse
Thanks. Did you have any problems getting LTE data to work with your 935V once it was on the AT&T network? I saw a few mentions from people saying they could only get slower data connections, until they called AT&T to "provision LTE for their SIM" or something. I get the impression it's not enough just to have an AT&T SIM card - like the AT&T network has a registry of phone IDs, and non-AT&T branded phones won't be in it, and so won't get LTE data.
From browsing the 935U thread, it sounds like that firmware is receiving updates much more slowly than the carrier-specific firmwares. The U firmware also wouldn't provide the missing AT&T-specific features I was looking for, like HD voice or WiFi calling, so I'm not convinced it would really be an improvement over just keeping the Verizon fw. But maybe I'll feel differently once I actually get my hands on the phone and play with it - all I'm doing now is reading forum threads and checking my mailbox.
Honestly couldn't tell you. I'm on Verizon with my main device (S7e on U FW). I only flashed the AT&T FW (PK1) so I could flash the unreleased Nougat files.
Now, I can't seem to flash anything but an AT&T rom.
Also FWIW, the U firmware is getting updates slower than carrier roms, but it's still the better rom - untouched by the carrier's bumbling idiot of a dev team, no pre-loaded carrier junk you can't get rid of (only disable), better battery life and better performance.
More FWIW, I don't care about HD Voice or Wifi calling - both those are irrelevant to me.
At&t release today on 2/17/17 official update to Nougat 7.0 build BQA6 with February security.
Clicking from Edge of Galaxy.
I want to do the opposite - flash G935V onto G935A, with the intention of eventually being able to flash back G935A. Not sure if I could do this, though.
Sent from my SM-G930V using Tapatalk
I've got my phone working now. The short answer is yes, as far as I've found, you can flash any carrier's firmware to your S7 Edge. There may be some limitations if the bootloader version on your phone is different from the new firmware's bootloader version, but fortunately I didn't run into that. I went from the Verizon firmware to the AT&T firmware and then to the unbranded 935U firmware.
But for best results, a branded S7 Edge should be used with the same branded firmware, and on the same network. Otherwise you may run into some problems, or certain carrier-specific features won't work. In my case, my Verizon-branded S7 Edge is unable to get Wifi calling and HD Voice (aka VoLTE) on the AT&T network with an AT&T SIM card, no matter what firmware version I use.
s.chamberlin said:
I've got my phone working now. The short answer is yes, as far as I've found, you can flash any carrier's firmware to your S7 Edge. There may be some limitations if the bootloader version on your phone is different from the new firmware's bootloader version, but fortunately I didn't run into that. I went from the Verizon firmware to the AT&T firmware and then to the unbranded 935U firmware.
But for best results, a branded S7 Edge should be used with the same branded firmware, and on the same network. Otherwise you may run into some problems, or certain carrier-specific features won't work. In my case, my Verizon-branded S7 Edge is unable to get Wifi calling and HD Voice (aka VoLTE) on the AT&T network with an AT&T SIM card, no matter what firmware version I use.
Click to expand...
Click to collapse
Really? That's strange. I successfully flashed V firmware on my A and HD voice & WiFi Capping are active
Sent from my SM-G935V using Tapatalk
So you did the opposite direction of what I did? I've read that AT&T is more restrictive about these features than some other carriers, which is maybe why it didn't work for me. I can't find it now, but there was an AT&T community forums thread in which a rep straight-out said that those features won't work on a non-AT&T-branded phone or other unlocked "bring your own device" phone.
To be fair, I'm not certain HD Voice isn't working, since there doesn't seem be a definitive way to test for it. With the AT&T firmware, attempting to turn on wifi calling would give me an error saying it couldn't be activated on my device. With the unbranded 935U firmware and an AT&T SIM card installed, I don't even see an option for turning on wifi calling.
I have the fully unlocked G950UZKAXAA I know the hardware of all s8 USA models are identical.
But concerning tmobiles extra aggregation of 4x4 mimo etc that required the unlocked s7 to flash the tmo modem, is it the same case to achieve full network optimization and speed?
Do I need to only flash the to modem file or the entire rom image every single csc etc? Please let me know exactly what to do thanks.
I can confirm without touching it that the unlocked firmware has no issue getting volte and wifi calling comes up nicely.
Just enabled the VoWiFi / VoLTE Via magisk module, But I am aware that it takes two parts of the software and open side rom and a closed firmware side. Just thinking since we have so many firmware updates if any of that was a VoLTE/VoWiFi patch of any of us?
I am on T-mobile and was looking for the bits and peace's from a modem identical to ours and supported natively by t-mobile so I can rip the code by comparing and add it and pray hehe.
Idk just throwing some idea's on the wall and hoping it sticks.
hey bud i'm on tis old epic team 7.4.6 beta version and it has VoLTE enable and working on cricket