I hate to bring this post back, but I am about to do the exact same thing. Can you tell me what all you had to do to get this to work normal? Thank you!
Verizon S7 Edge (SM-G935V) on AT&T with LTE tip
- Thread starter fredmc2020
- Start date
Would the 4g Icon showing represent LTE on the verizon software? I'm running the nougat beta from verizon on my G935a and have yet to see an actual LTE icon show up.
I want to do the same. I think just following this guide and flashing the U firmware should make everything work fine. I just wonder if the U firmware unlocks the other LTE bands? I'm kind of a noob and still trying to get the hang of things lol
http://forum.xda-developers.com/ver...de-flashing-sm-935u-firmware-verizon-t3415145
Replying to myself, I found this AT&T SIM/IMEI update link in the AT&T Community forum: https://www.att.com/olam/loginAction.olamexecute?target=simimei
Haven't tried it yet.
What happens when you give AT&T the wrong IMEI number, as the OP and others recommended for getting MMS and 4G to work on the AT&T network? The advice was to give them the IMEI from an old AT&T branded phone, or an AT&T display phone. But won't it cause a problem when the IMEI of the S7 Edge you're actually using on their network doesn't match the IMEI linked to your AT&T account?
I'm in this boat now too - I bought a used Verizon-branded S7 Edge, but I'm using it on the AT&T network with an AT&T sim card. Most things work, but MMS messaging is broken (any text msg with a photo or with multiple recipients), and I'm not sure if 4G LTE data is working.
From reading back through this thread, it sounds like if you give AT&T the actual IMEI from your Verizon-branded phone, they'll just say you're out of luck because you're not using an AT&T-supplied phone. But if you give them the IMEI from some old AT&T phone, they'll immediately know you're lying because the brand and model of phone is encoded in an IMEI number, and they'll know it's not an S7 Edge. And if the goal is to get 4G LTE provisioning working by getting your phone's SIM and IMEI into AT&T's database, then giving them the wrong IMEI doesn't useful.
I guess I'm unclear why AT&T needs the IMEI in the first place, and what they do with it, and why giving them the wrong IMEI can help anything.
I'm in this boat now too - I bought a used Verizon-branded S7 Edge, but I'm using it on the AT&T network with an AT&T sim card. Most things work, but MMS messaging is broken (any text msg with a photo or with multiple recipients), and I'm not sure if 4G LTE data is working.
From reading back through this thread, it sounds like if you give AT&T the actual IMEI from your Verizon-branded phone, they'll just say you're out of luck because you're not using an AT&T-supplied phone. But if you give them the IMEI from some old AT&T phone, they'll immediately know you're lying because the brand and model of phone is encoded in an IMEI number, and they'll know it's not an S7 Edge. And if the goal is to get 4G LTE provisioning working by getting your phone's SIM and IMEI into AT&T's database, then giving them the wrong IMEI doesn't useful.
I guess I'm unclear why AT&T needs the IMEI in the first place, and what they do with it, and why giving them the wrong IMEI can help anything.
OK, here's my experience with an unlocked Verizon S7 Edge SM-G935V purchased from eBay and then used on AT&T's network, now that I finally got things sorted out.
My old phone used a different sized SIM card, so I couldn't just swap it into the S7 Edge. I went to the AT&T store, and they set me up with a new nano SIM card in five minutes, no charge. The AT&T rep also entered my new phone's IMEI number into their system. He didn't seem to care that it was a Verizon-branded phone.
After that I went into the phone's mobile network settings, and added a new APN entry for AT&T using all the info from the first post of this thread. After that, everything mostly worked, but it wasn't great. The Verizon firmware on the phone complained about finding a non-Verizon SIM every time I rebooted. MMS messaging didn't work correctly. I *think* 4G LTE data worked, but I'm not certain since I live in a spot with no LTE service anyway. I didn't try wifi calling or VoLTE (HD voice).
Next I used Odin to install the stock AT&T Marshmallow firmware onto the phone, G935AUCS4APK1. This fixed the non-Verizon SIM warning, and it picked up the correct APN settings automatically. I also verified that MMS and 4G LTE worked. Some previous posters apparently needed to give AT&T a different IMEI number from an AT&T-branded device before 4G LTE would work, but I didn't have that problem, and never contacted AT&T about any IMEI number issues. Unfortunately wifi calling did not work. When I tried to turn it on, the phone would think for a minute, then tell me wifi calling couldn't be provisioned for my device, and I should call customer support if I thought this was an error. I don't know if VoLTE worked but I assume not - is there any way to really tell, other than by subjective audio quality of the call? Also OTA updates appeared not to work, since there is an AT&T Nougat update available now that should have applied to the AT&T Marshmallow, but when I manually checked for updates it said I was already up to date. And lastly the AT&T firmware had a startling amount of junk in it, including an AT&T Address Book feature that kept popping up errors and that I couldn't figure out how to disable. So overall, this wasn't a great solution.
I used Odin once again to install the unbranded S7 Edge firmware for the 935U, G935UUEU4API3. Immediately I received an OTA update to firmware version PL4, so I could see the OTA mechanism worked. MMS and 4G LTE still worked. Wifi calling no longer even appeared as an option in the settings menus. Again, I assume VoLTE didn't work but can't confirm that for certain. Overall the U firmware gave me the exact same functionality as the AT&T firmware, except with a lot less bloat and junk, so I decided to keep it.
It would be great if I could find a way to make wifi calling and VoLTE work, but it appears AT&T just flat-out won't support these features on any non-AT&T-branded device. So if you're doing a Bring Your Own Device to AT&T's network, watch out. Here's a thread from AT&T Community Forums about this: https://forums.att.com/t5/Device-Features/VoLTE-and-HD-Voice-Unlocked-Phones/td-p/4776203
I'm glad I finally get everything mostly working, but I'm peeved that it was so much hassle and still isn't 100% there. If you're buying a used phone and plan to use it with AT&T, I would definitely recommend that you spend the extra $20 to get an AT&T branded phone, instead of an unlocked Verizon phone or other unlocked phone that will only sort-of-mostly work. I wish I had.
My old phone used a different sized SIM card, so I couldn't just swap it into the S7 Edge. I went to the AT&T store, and they set me up with a new nano SIM card in five minutes, no charge. The AT&T rep also entered my new phone's IMEI number into their system. He didn't seem to care that it was a Verizon-branded phone.
After that I went into the phone's mobile network settings, and added a new APN entry for AT&T using all the info from the first post of this thread. After that, everything mostly worked, but it wasn't great. The Verizon firmware on the phone complained about finding a non-Verizon SIM every time I rebooted. MMS messaging didn't work correctly. I *think* 4G LTE data worked, but I'm not certain since I live in a spot with no LTE service anyway. I didn't try wifi calling or VoLTE (HD voice).
Next I used Odin to install the stock AT&T Marshmallow firmware onto the phone, G935AUCS4APK1. This fixed the non-Verizon SIM warning, and it picked up the correct APN settings automatically. I also verified that MMS and 4G LTE worked. Some previous posters apparently needed to give AT&T a different IMEI number from an AT&T-branded device before 4G LTE would work, but I didn't have that problem, and never contacted AT&T about any IMEI number issues. Unfortunately wifi calling did not work. When I tried to turn it on, the phone would think for a minute, then tell me wifi calling couldn't be provisioned for my device, and I should call customer support if I thought this was an error. I don't know if VoLTE worked but I assume not - is there any way to really tell, other than by subjective audio quality of the call? Also OTA updates appeared not to work, since there is an AT&T Nougat update available now that should have applied to the AT&T Marshmallow, but when I manually checked for updates it said I was already up to date. And lastly the AT&T firmware had a startling amount of junk in it, including an AT&T Address Book feature that kept popping up errors and that I couldn't figure out how to disable. So overall, this wasn't a great solution.
I used Odin once again to install the unbranded S7 Edge firmware for the 935U, G935UUEU4API3. Immediately I received an OTA update to firmware version PL4, so I could see the OTA mechanism worked. MMS and 4G LTE still worked. Wifi calling no longer even appeared as an option in the settings menus. Again, I assume VoLTE didn't work but can't confirm that for certain. Overall the U firmware gave me the exact same functionality as the AT&T firmware, except with a lot less bloat and junk, so I decided to keep it.
It would be great if I could find a way to make wifi calling and VoLTE work, but it appears AT&T just flat-out won't support these features on any non-AT&T-branded device. So if you're doing a Bring Your Own Device to AT&T's network, watch out. Here's a thread from AT&T Community Forums about this: https://forums.att.com/t5/Device-Features/VoLTE-and-HD-Voice-Unlocked-Phones/td-p/4776203
I'm glad I finally get everything mostly working, but I'm peeved that it was so much hassle and still isn't 100% there. If you're buying a used phone and plan to use it with AT&T, I would definitely recommend that you spend the extra $20 to get an AT&T branded phone, instead of an unlocked Verizon phone or other unlocked phone that will only sort-of-mostly work. I wish I had.
The same thing was said about verizon volte.Check out the thread on flashing tmobile nougat firmware on verizon phone. I found a way to activate volte even though it is tmobile firmware. The same way may work for you.
I got the data and texting to work but voice isn't working. I have a Verizon S7 that I got off gazelle and put an AT&T sim in it. Any advice?
SMS, LTE, etc. on Verizon S7e on ATT
After trying the U ROM, prefixer, and many other suggestion (I got the SM 935V using it on ATT) I could not resolve the reported problems. (SMS, a + added to phone numbers, LTE bands, etc.)
UNTIL, I ran across the ECHOE rom that seems to have solved all the problems, now my 935V phone became SM 935A (ATT).
Once you rooted your phone which you can do from:
https://forum.xda-developers.com/ve...-to-notes-root-install-xposed-unroot-t3411039
Go to
https://forum.xda-developers.com/ve...t/g935-g930-echoerom-multicarrierusa-t3458535
Make sure you select the carrier you want the phone to work on.
Since I did that, I have seen LTE bands I could not see on the V phone, like 12, 30 which is not on the V phone.
Below is a list of LTE bands on the common S7 phones (V, A, T)
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 20(800), 29(700), 30(2300), 38(2600), 39(1900), 40(2300), 41(2500) - G935A
LTE band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 13(700), 20(800), 38(2600), 39(1900), 40(2300) - G935V
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 13(700), 20(800) - G935T
Good luck.
After trying the U ROM, prefixer, and many other suggestion (I got the SM 935V using it on ATT) I could not resolve the reported problems. (SMS, a + added to phone numbers, LTE bands, etc.)
UNTIL, I ran across the ECHOE rom that seems to have solved all the problems, now my 935V phone became SM 935A (ATT).
Once you rooted your phone which you can do from:
https://forum.xda-developers.com/ve...-to-notes-root-install-xposed-unroot-t3411039
Go to
https://forum.xda-developers.com/ve...t/g935-g930-echoerom-multicarrierusa-t3458535
Make sure you select the carrier you want the phone to work on.
Since I did that, I have seen LTE bands I could not see on the V phone, like 12, 30 which is not on the V phone.
Below is a list of LTE bands on the common S7 phones (V, A, T)
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 20(800), 29(700), 30(2300), 38(2600), 39(1900), 40(2300), 41(2500) - G935A
LTE band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 13(700), 20(800), 38(2600), 39(1900), 40(2300) - G935V
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 13(700), 20(800) - G935T
Good luck.
We just flashed three Verizon S7's with T-mobile Roms and have 100% compatibility. No need to unlock or Root anything. They were on Verizon (nougat) before. I see a lot of misunderstanding about this. Verizon does not lock phones, but because they are CDMA the rom is slightly different and simply inserting a Sim card doesn't enable everything. Very clear directions are on XDA on how to flash an S7. We have not bothered with the international ROM. That may also work but T-mobile's wifi calling is not guaranteed. The Moto G4 is proof of that.
Last edited:
Are you saying that you flash the T-Mobile rom and it works on AT&T ?
I am actually wondering if s8 is going to be similar
I am actually wondering if s8 is going to be similar
Hopefully someone knows what I need to do. My phone wouldn't even get voice with my cricket sim in it. I flashed the U firmware and I still have no voice or data. There is a circle and slash where signal should be. All I'm getting is a voicemail notification.
Sent from my XT1575 using Tapatalk
Sent from my XT1575 using Tapatalk
I tried everything next to flashing Tmobile firmware, nothing worked, I found this app on the playstore!!! 4G ONLY NETWORK MODE....install it, and unlock the LTE! I'm now rolling on LTE!!
Verizon Galaxy S7 Edge on Staright talk with AT&T sim
I was given a a SM-935V. The phone was completely restored by Samsung under warranty due to battery bulging separating
the back.
I would like to use this on my provider Straight Talk using my AT&T sim. Current phone is Nexus 5.
The phone has Android 8.0 on it. Before I go cut my micro sim to nano size I was wondering what success I will have
with this working on Straight Talk with the AT&T sim. I do have a nano to micro adapter on order and plan
to wait for it to come in before I cut the sim with my sim cutter.
I am not 100% understanding with all the previous post about what seems to work and what doesn't along
with what version of OS might be on the phone.
What are my usage options with this phone. I would like to use it as its in perfect condition, new front display, new back,
battery and a few other things they did.
Any help would be appreciated. Go slow as I am just learning.
Thanks
Ken
I was given a a SM-935V. The phone was completely restored by Samsung under warranty due to battery bulging separating
the back.
I would like to use this on my provider Straight Talk using my AT&T sim. Current phone is Nexus 5.
The phone has Android 8.0 on it. Before I go cut my micro sim to nano size I was wondering what success I will have
with this working on Straight Talk with the AT&T sim. I do have a nano to micro adapter on order and plan
to wait for it to come in before I cut the sim with my sim cutter.
I am not 100% understanding with all the previous post about what seems to work and what doesn't along
with what version of OS might be on the phone.
What are my usage options with this phone. I would like to use it as its in perfect condition, new front display, new back,
battery and a few other things they did.
Any help would be appreciated. Go slow as I am just learning.
Thanks
Ken
Get a new SIM card from your carrier then flash the AT&T "U" firmware from here.
https://updato.com/firmware-archive-select-model?record=0A1AF06A906411E89F15FA163EE8F90B
Follow up
I have the phone working on Straight talk using their AT&T sim card. Had to switch it with in the settings
from CDMA to GSM and add a new APN for the straight talk settings.
All works fine, text and text with pictures/videos. The only problem is the lack of LTE band 12 and 17.
As I understand it if you have band 12 your covering 3 freq ranges and if you have band 17 your only
covering 2 of the 3 freqs of band 12. Once I get all my questions answered on the flashing of
G935U (AT&T) firmware and if I am comfortable with what I find out I will go ahead and flash it to
get band 12 and a few others that are not on the Verizon G935V
Ken
I have the phone working on Straight talk using their AT&T sim card. Had to switch it with in the settings
from CDMA to GSM and add a new APN for the straight talk settings.
All works fine, text and text with pictures/videos. The only problem is the lack of LTE band 12 and 17.
As I understand it if you have band 12 your covering 3 freq ranges and if you have band 17 your only
covering 2 of the 3 freqs of band 12. Once I get all my questions answered on the flashing of
G935U (AT&T) firmware and if I am comfortable with what I find out I will go ahead and flash it to
get band 12 and a few others that are not on the Verizon G935V
Ken
I'm in a similar spot: I have a Verizon Samsung Galaxy S7 Edge (SM-G935V), that I want to use on AT&T. I inserted a new AT&T SIM card (associated with a paid, valid AT&T account), and updated my APN settings to match the AT&T info in the OP. After rebooting I received an OTA update to Oreo (Android v. 8.0), but the phone still shows the Verizon logo and "This is not a Verizon SIM card" error message at startup. Voice calling works fine, and I can connect to wireless networks, but I have no mobile data.
I'm ready to flash to the "U" firmware (G935UUEU4CRG2 for AT&T), and Odin is ready to go, but when I try to download the U firmware from updato using the link below, I get nothing. Clicking on the "Free Standard Download" button does nothing - no download starts. Any suggestions on where else to download the AT&T firmware? I see a lot of links out there, but not sure which ones to trust.
Ken[/QUOTE]
I'm ready to flash to the "U" firmware (G935UUEU4CRG2 for AT&T), and Odin is ready to go, but when I try to download the U firmware from updato using the link below, I get nothing. Clicking on the "Free Standard Download" button does nothing - no download starts. Any suggestions on where else to download the AT&T firmware? I see a lot of links out there, but not sure which ones to trust.
Ken[/QUOTE]
I'm in a similar spot: I have a Verizon Samsung Galaxy S7 Edge (SM-G935V), that I want to use on AT&T. I inserted a new AT&T SIM card (associated with a paid, valid AT&T account), and updated my APN settings to match the AT&T info in the OP. After rebooting I received an OTA update to Oreo (Android v. 8.0), but the phone still shows the Verizon logo and "This is not a Verizon SIM card" error message at startup. Voice calling works fine, and I can connect to wireless networks, but I have no mobile data.
I'm ready to flash to the "U" firmware (G935UUEU4CRG2 for AT&T), and Odin is ready to go, but when I try to download the U firmware from UPDATO using the link provided later in this thread, I get nothing. Clicking on the "Free Standard Download" button does nothing - no download starts. Any suggestions on where else to download the AT&T firmware besides UPDATO? I see a lot of links out there, but not sure which ones to trust.
---------- Post added at 05:42 PM ---------- Previous post was at 05:33 PM ----------
Can you point me to a valid link to the 935U firmware?
I'm trying to update a Verizon SM-G935V to be used on AT&T - there are many links out there for the G935UUEU4CRG2 for AT&T, but I'm not sure which on to trust.
I'm ready to flash to the "U" firmware (G935UUEU4CRG2 for AT&T), and Odin is ready to go, but when I try to download the U firmware from UPDATO using the link provided later in this thread, I get nothing. Clicking on the "Free Standard Download" button does nothing - no download starts. Any suggestions on where else to download the AT&T firmware besides UPDATO? I see a lot of links out there, but not sure which ones to trust.
---------- Post added at 05:42 PM ---------- Previous post was at 05:33 PM ----------
Can you point me to a valid link to the 935U firmware?
I'm trying to update a Verizon SM-G935V to be used on AT&T - there are many links out there for the G935UUEU4CRG2 for AT&T, but I'm not sure which on to trust.
Understood. But where did you get the actual "U" firmware? The Updato link is no longer valid.
Where can I safely download the SM-G935U (G935UUEU4CRG2 for AT&T) firmware?
Where can I safely download the SM-G935U (G935UUEU4CRG2 for AT&T) firmware?
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