Database Users

[Q] N910T on verizon networks

I see the general consensus is that the tmobile note 4 cannot be used on verizon. Is the radio purely software controlled? Could I just flash another baseband and modem?
I did notice when I installed cm12 and inserted my verizon sim I was able to get 4g and data access but not on the stock tmo rom. Voice did not work as well. Is there anything I can do? I dont really want to have to shell out for the verizon version with an unlocked bootloader.
Thanks

Pros and Cons of ROM's from other variants

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.

SM-935V

I would like to know if it's possible to flash the firmware for
T-mobile I'm looking to leave verizon I know that the Verizon variant does not have 2 of the lte bands that T-mobile uses can I use Odin to Flash the 935t firmware to get the band's or am I asking something that is not possible. Thanks in advance

Rich7591110 said:
I would like to know if it's possible to flash the firmware for
T-mobile I'm looking to leave verizon I know that the Verizon variant does not have 2 of the lte bands that T-mobile uses can I use Odin to Flash the 935t firmware to get the band's or am I asking something that is not possible. Thanks in advance
Click to expand...
Click to collapse
The answer is NO you're asking firmware to replace/add hardware and that's not possible

I have a Verizon branded s7 edge and used Odin to load the 935U PI3 firmware. I am on T-Mo now and do have LTE band 12 working (validated with LTE Discovery). The research that I did found that the US variants have all the radios in them, but some carrier variants of firmware disable certain bands. By doing the 935U firmware, I also got rid of the notice on every reboot that I was using a non-Verizon SIM. So I now have all T-mo bands and no stupid SIM message.
Rich7591110 said:
I would like to know if it's possible to flash the firmware for
T-mobile I'm looking to leave verizon I know that the Verizon variant does not have 2 of the lte bands that T-mobile uses can I use Odin to Flash the 935t firmware to get the band's or am I asking something that is not possible. Thanks in advance
Click to expand...
Click to collapse

I can vouch for same experience as SF-IT guy. I bought a G935V and flashed with G935U firmware via odin. Works on T-mobile, even wifi calling works. Currently on the latest PI3 version of G935U firmware. I would that you search the forum to see if you can flash the G935T firmware directly. The only downside of using G935U firmware is that the FM radio chip is not enabled in the firmware. I read that the all the carrier versions (September security patch and newer) of the G935 firmware have the FM radio chip enabled. I prefer the 935U version because it there is not carrier bloatware. Samsung bloatware is still there.

davekung said:
I can vouch for same experience as SF-IT guy. I bought a G935V and flashed with G935U firmware via odin. Works on T-mobile, even wifi calling works. Currently on the latest PI3 version of G935U firmware. I would that you search the forum to see if you can flash the G935T firmware directly. The only downside of using G935U firmware is that the FM radio chip is not enabled in the firmware. I read that the all the carrier versions (September security patch and newer) of the G935 firmware have the FM radio chip enabled. I prefer the 935U version because it there is not carrier bloatware. Samsung bloatware is still there.
Click to expand...
Click to collapse
So what would the FM radio chip do? Just enable FM radios is all? Because if that's the downside then it's not a major setback as not too many people use the FM radio.

I don't think you can

cyoo97 said:
I don't think you can
Click to expand...
Click to collapse
You definitely can. All US versions of the S7 & S7 Edge are the same hardware and can be flashed to any other US firmware. (including the U firmware that automatically works on all 4 carriers)

andrewNY said:
You definitely can. All US versions of the S7 & S7 Edge are the same hardware and can be flashed to any other US firmware. (including the U firmware that automatically works on all 4 carriers)
Click to expand...
Click to collapse
So what you're saying is that flashing the U version firmware will unlock by default all 930"X" and 935"X" phones? As in it just unlocks the mofo and debloats some while you're at it?
What's the catch? It seems too easy

Tin_Man_0 said:
So what you're saying is that flashing the U version firmware will unlock by default all 930"X" and 935"X" phones? As in it just unlocks the mofo and debloats some while you're at it?
What's the catch?
Click to expand...
Click to collapse
Bloat is definitely gone on the U firmware, which is great. My phone runs faster and has more free space too.
I think some carrier features aren't supported on the U firmware. On T-mobile everything works (VoLTE and Wi-Fi Calling), but I think AT&T might have some issues with those.
If the phone is SIM locked to a particular carrier, I'm not sure that automatically gets turned off or not when you switch to the U firmware. You might need to contact your carrier first to get an unlock code?

andrewNY said:
Bloat is definitely gone on the U firmware, which is great. My phone runs faster and has more free space too.
I think some carrier features aren't supported on the U firmware. On T-mobile everything works (VoLTE and Wi-Fi Calling), but I think AT&T might have some issues with those.
If the phone is SIM locked to a particular carrier, I'm not sure that automatically gets turned off or not when you switch to the U firmware. You might need to contact your carrier first to get an unlock code?
Click to expand...
Click to collapse
What if I got a temporary unlock from t-mobile unlock app and then flashed this firmware? Would it make it permanent? Seems quite possible, but I don't know if the temporary unlock actually unlocks the phone or just inserts a bypass that would disappear if flashed.

andrewNY said:
Bloat is definitely gone on the U firmware, which is great. My phone runs faster and has more free space too.
I think some carrier features aren't supported on the U firmware. On T-mobile everything works (VoLTE and Wi-Fi Calling), but I think AT&T might have some issues with those.
If the phone is SIM locked to a particular carrier, I'm not sure that automatically gets turned off or not when you switch to the U firmware. You might need to contact your carrier first to get an unlock code?
Click to expand...
Click to collapse
I unlocked my US TMo phone when stock, rooted, and am running Echoe - which has a glitch where WiFi calling sort of works (can receive calls but not make them). In the TMo forum, there are threads on U - your comments here are more specific to what I am interested.
Which U firmware are you on and are you rooted (is is updated to latest v4 bootloader version), and did you have to ODIN and full wipe with CSC or did you get by with CSC Home to preserve data?
Also, are you on U CP or did you flash TMo CP to get all the bands?.
.

duplicate - XDA burped

Thanks everyone

Installing AT&T firmware on unlocked Verizon S7 Edge SM-G935V

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.

Sprint HTC 10 on T-Mobile?

Does the Sprint variant work with Ting GSM (essentially T-Mobile towers) if you SIM unlock it following the SIM unlock tutorials? Or would it require more than that? I looked on HTC's site and its shows the phone has all the same bands for the Sprint version and T-Mobile version. Does anyone have a Sprint version working with Ting or T-Mobile?

yadnom said:
Does the Sprint variant work with Ting GSM (essentially T-Mobile towers) if you SIM unlock it following the SIM unlock tutorials? Or would it require more than that? I looked on HTC's site and its shows the phone has all the same bands for the Sprint version and T-Mobile version. Does anyone have a Sprint version working with Ting or T-Mobile?
Click to expand...
Click to collapse
I believe it does if you change your cid and flash it to the unlocked firmware. There are threads everywhere on how to do this, make sure to check the un-carrier branded HTC 10 xda site.

yadnom said:
Does the Sprint variant work with Ting GSM (essentially T-Mobile towers) if you SIM unlock it following the SIM unlock tutorials? Or would it require more than that? I looked on HTC's site and its shows the phone has all the same bands for the Sprint version and T-Mobile version. Does anyone have a Sprint version working with Ting or T-Mobile?
Click to expand...
Click to collapse
I run a Sprint device on T-Mobile. Works perfect with the exception of WiFI Calling which I am currently trying to get working.
Simple way is to unlock SIM NV method, load custom recovery, load latest Viper ROM, on AROMA pick the proper base install MM or N and Choose T-Mobile for carrier and that's really it man. the LTE bands are already all there, reason why I say Viper after the unlock is because other people including me had trouble getting data to work on stock Sprint MM. Flashing Viper solved that beautifully.

jblparisi said:
I run a Sprint device on T-Mobile. Works perfect with the exception of WiFI Calling which I am currently trying to get working.
Simple way is to unlock SIM NV method, load custom recovery, load latest Viper ROM, on AROMA pick the proper base install MM or N and Choose T-Mobile for carrier and that's really it man. the LTE bands are already all there, reason why I say Viper after the unlock is because other people including me had trouble getting data to work on stock Sprint MM. Flashing Viper solved that beautifully.
Click to expand...
Click to collapse
Thanks!

yadnom said:
Thanks!
Click to expand...
Click to collapse
The only thing that sucks is you will be missing WiFi Calling which to me was a little annoying. I have tried everything, I went as far as S-OFF (kinda of a waste of $25) installed multiple firmwares (T-Mobile stock with Sprint radio, etc), different rom's, so far nothing, it seems tied to the actual us unlocked/t-mobile radio which as we know isn't compatible with the Sprint variant. On the plus everything else works including VoLTE.

jblparisi said:
The only thing that sucks is you will be missing WiFi Calling which to me was a little annoying. I have tried everything, I went as far as S-OFF (kinda of a waste of $25) installed multiple firmwares (T-Mobile stock with Sprint radio, etc), different rom's, so far nothing, it seems tied to the actual us unlocked/t-mobile radio which as we know isn't compatible with the Sprint variant. On the plus everything else works including VoLTE.
Click to expand...
Click to collapse
If you ever figured out Wi-Fi calling on the Sprint HTC 10 for T-Mobile, do you remember how and can you tell me?