Database Users

Please help: Using a Verizon 7 EDGE in a GSM market with new SIM?

How do I get a Verizon S7 Edge to recognize a new GSM SIM? I want to use it on another carrier, and Verizon says it's not SIM-locked/carrier locked but when I put in the new SIM, it's not working.
Factory reset didn't work. Would an Odin flash work? IF not, what would?
Thanks. Not sure if I'm asking in the right place.

Flash the U firmware.
Using odin ^^

Depending on which carrier you are flashing to. You can flash the carrier specific file for whichever carrier you want, for example if you want to use it with T-Mobile you can download the T-Mobile Odin and PIT files to flash and it should work fine. Same with AT&T.
Or do as said above and flash the 935U firmware and it'll work fine. Though with this option there's no carrier extras like VOLTE, or wifi calling as far as I know.

I used another Sim on Verizon firmware. Look somewhere in connection settings. There was smthn about which network you want to use Verizon CDMA or GSM. Now i'm on U firmware.

A t-mobile SIM worked fine for me after entering the new APN settings. For best performance though, flash the U firmware to unlock the bands.

Samsung S7 edge Verizon - G935V GSM unlocked

HI Folks
I have heard that Samsung S7 edge on Verizon is by default GSM SIM unlocked. Is this correct ? dont we have to do any unlock or similar process to allow GSM sim cards to work from other carriers both domestic and international. Any limitations on this compared to a truly unlocked phone when talking of GSM/LTE features only ?
Thanks

Yes bro! It is unlocked in default. I am staying in India. I have imported s7 edge sm-g935v. It is now on android 7.p. But problem is, it has Verizon bloatware, Verizon apps, Verizon boot up logo, also say sin card is not from Verizon when I use local GSM sim card.
All the calls, messages, work perfectly. Problem is mobile data don't work properly. I tried setting internet configuration manually. Play store and apps work. But browsing internet on any browser don't work.
Let me know if there is any way to use firmware completely free from Verizon. It's annoying man!

deltacharlie said:
HI Folks
I have heard that Samsung S7 edge on Verizon is by default GSM SIM unlocked. Is this correct ? dont we have to do any unlock or similar process to allow GSM sim cards to work from other carriers both domestic and international. Any limitations on this compared to a truly unlocked phone when talking of GSM/LTE features only ?
Thanks
Click to expand...
Click to collapse
I have heard the same, but I got S7 Edge from Verizon and is not unlocked...

so I heard this as well and randomly while giving payment asked them if I could have the 4 digit code to unlock... 5 mins latter I had code and on way it was really pretty easy =)

Lrajkh said:
Yes bro! It is unlocked in default. I am staying in India. I have imported s7 edge sm-g935v. It is now on android 7.p. But problem is, it has Verizon bloatware, Verizon apps, Verizon boot up logo, also say sin card is not from Verizon when I use local GSM sim card.
All the calls, messages, work perfectly. Problem is mobile data don't work properly. I tried setting internet configuration manually. Play store and apps work. But browsing internet on any browser don't work.
Let me know if there is any way to use firmware completely free from Verizon. It's annoying man!
Click to expand...
Click to collapse
To remove the bloatware just install the Stock 935U firmware. That will remove all the verizon bloatware. Not to sure about the unlocking. I have heard both versions, that is GSM unlocked by default and it is locked and cannot be used on any other GSM network either.

So i have s7 edge verizon and i am currently in india. i got a vodafone sim card and it was working but the network wasn't stable. all of a sudden i cant access any network on the phone but when i insert a sim card i brought along fro africa i get roaming network.. can anyone assist? thank you

S7 edge SM-G935V Verizon
I got the same problem as you @LRAjhk.
I'm in France and have s7 edge SM-G935V. sms, call work perfectly even it's said : SIM not from Verizon wireless , but data network don't work . I would like to remove all verizon on my phone. Did someone knows how please ?
.
Lrajkh said:
Yes bro! It is unlocked in default. I am staying in India. I have imported s7 edge sm-g935v. It is now on android 7.p. But problem is, it has Verizon bloatware, Verizon apps, Verizon boot up logo, also say sin card is not from Verizon when I use local GSM sim card.
All the calls, messages, work perfectly. Problem is mobile data don't work properly. I tried setting internet configuration manually. Play store and apps work. But browsing internet on any browser don't work.
Let me know if there is any way to use firmware completely free from Verizon. It's annoying man!
Click to expand...
Click to collapse

I have a SM-G935V (S7 EDGE VERIZON) USA. This is what I did, I put the Sim card in another phone (T-mobile) S7 edge, then copied the APN Network verbatim. Put the Sim back into my Verizon phone and been doing ok for almost 2yrs. The data does drop when you make or recieve a call or text message. Service is very spotty, majority of the time. If anyone knows if there is a stable rom for this situation, please let me know, I'm still on pb5

Raprezy said:
I got the same problem as you @LRAjhk.
I'm in France and have s7 edge SM-G935V. sms, call work perfectly even it's said : SIM not from Verizon wireless , but data network don't work . I would like to remove all verizon on my phone. Did someone knows how please ?
.
Click to expand...
Click to collapse
Verizon models lock out certain LTE bands from use that the network does not use, simply flashing the G935U firmware would be the best bet as it will unlock all available bands and remove all the Verizon carrier bloatware. When i first had my Verizon S7 G930V i was not able to get band 12 on T-Mobile, now that i flashed the G930U firmware i get all the bands and carrier aggregation i wasn't able to before. Same goes for the G935V and U models.

twinturboz said:
Verizon models lock out certain LTE bands from use that the network does not use, simply flashing the G935U firmware would be the best bet as it will unlock all available bands and remove all the Verizon carrier bloatware. When i first had my Verizon S7 G930V i was not able to get band 12 on T-Mobile, now that i flashed the G930U firmware i get all the bands and carrier aggregation i wasn't able to before. Same goes for the G935V and U models.
Click to expand...
Click to collapse
yes I Did The Same for my S7 edge. But now I cant update without The phone Rebooting after 60 seconds or so... Now I'm stuck on 6.0.1
Sent from my SM-G935U using Tapatalk

I just used my SM-G935V in Japan with a Y!Mobile SIM card for 6 months with 0 issues. Granted, I only used it for data, but it worked exactly as I would have expected. We did have to manually input the APN info, but the Y!Mobile sales associate helped me out with it.

ssyeah said:
yes I Did The Same for my S7 edge. But now I cant update without The phone Rebooting after 60 seconds or so... Now I'm stuck on 6.0.1
Sent from my SM-G935U using Tapatalk
Click to expand...
Click to collapse
I'm getting updates fine on both s7 and s7 edge, i have the latest March patch as well.

i had the same problems with verizon's s7 edge in dominican republic. pop up messages told me it's not a verizon sim card and data and internet would not work. then I downloaded sm-g935U international, carrier-less rom and installed it on my phone. all of the sudden my phone became a generic s7edge phone without the verizon crap apps. no more pop up and everything worked fine right from the beginning. data and internet work flawlessly and phone became a super phone.
Love my s7 edge.

Would you know if flashing the g935U firmware would also add LTE bands 12 and 17? I want the phone to be more
compatible with AT&T. Band 17 LTE is used in my area. My Verizon Galaxy S7 Edge G935V is at Android 8.0
Ken
deltacharlie said:
To remove the bloatware just install the Stock 935U firmware. That will remove all the verizon bloatware. Not to sure about the unlocking. I have heard both versions, that is GSM unlocked by default and it is locked and cannot be used on any other GSM network either.
Click to expand...
Click to collapse

KenKK said:
Would you know if flashing the g935U firmware would also add LTE bands 12 and 17? I want the phone to be more
compatible with AT&T. Band 17 LTE is used in my area. My Verizon Galaxy S7 Edge G935V is at Android 8.0
Ken
Click to expand...
Click to collapse
Sorry dont have the phone anymore. BUt as per this link G935U support band 12 but not 17
https://www.frequencycheck.com/models/A1XZL/samsung-sm-g935u-galaxy-s7-edge-td-lte-samsung-hero-2

I have the Verizon S7 Edge G935V. I want it to have more AT&T bands as it currently lacks band 12. When you say flash with the G935U firmware I noticed there are several versions for different carriers.
Would you mean flash the 935U firmware associated with AT&T? Or would I flash the verizon version of 935U? I am guessing the AT&T 935U for more AT&T bands, ??
Ken
Verizon models lock out certain LTE bands from use that the network does not use, simply flashing the G935U firmware would be the best bet as it will unlock all available bands and remove all the Verizon carrier bloatware. When i first had my Verizon S7 G930V i was not able to get band 12 on T-Mobile, now that i flashed the G930U firmware i get all the bands and carrier aggregation i wasn't able to before. Same goes for the G935V and U models.

how to root my phone
I have s7 edge verizon G935V with androd Oreo so if I install G935U firmware all verizon stuff would disapeir? could I rooted later? or how can root it?

Lrajkh said:
Yes bro! It is unlocked in default. I am staying in India. I have imported s7 edge sm-g935v. It is now on android 7.p. But problem is, it has Verizon bloatware, Verizon apps, Verizon boot up logo, also say sin card is not from Verizon when I use local GSM sim card.
All the calls, messages, work perfectly. Problem is mobile data don't work properly. I tried setting internet configuration manually. Play store and apps work. But browsing internet on any browser don't work.
Let me know if there is any way to use firmware completely free from Verizon. It's annoying man!
Click to expand...
Click to collapse
Did you find any solution?

KenKK said:
I have the Verizon S7 Edge G935V. I want it to have more AT&T bands as it currently lacks band 12. When you say flash with the G935U firmware I noticed there are several versions for different carriers.
Would you mean flash the 935U firmware associated with AT&T? Or would I flash the verizon version of 935U? I am guessing the AT&T 935U for more AT&T bands, ??
Ken
Verizon models lock out certain LTE bands from use that the network does not use, simply flashing the G935U firmware would be the best bet as it will unlock all available bands and remove all the Verizon carrier bloatware. When i first had my Verizon S7 G930V i was not able to get band 12 on T-Mobile, now that i flashed the G930U firmware i get all the bands and carrier aggregation i wasn't able to before. Same goes for the G935V and U models.
Click to expand...
Click to collapse
I have this same question. My son has my old SM-G935V bought from Verizon, but it hasn't been connected to any service. I'm looking to connect it now that he's older, but I'm not paying the $XX /m Verizon wants to add a line for my kid, so I'm looking at Mint Mobile @ $15/m. I found these U firmwares:
Samsung firmware download - find All Official Android & Samsung Updates | updato.com
Are you looking for the official Samsung software to download? At updato.com, you'll find the latest Android device updates. Check on your own!
updato.com
But, which one? Do I use the Verizon one because it's a Verizon phone originally, or do I use the Tmobile firmware since Mint runs on the Tmobile network? Thanks.
UPDATE: Nevermind, I went with the T-mobile marked ROM and it worked flawlessly, at leas to connect to Mint, the service itself is garbage though so I'm going to try ATT ROM with Boost next.

is there a How to on Canadian Carrier Switching?

I've looked all over the forums and all the threads on carrier switching refer to switching US S8 variants to US carriers.
Can someone please explain or point me to a thread that explains how to carrier switch Canadian providers that would be fantastic. In particular I want to go from Rogers to Freedom Mobile (aka wind mobile) . My phone has been factory unlocked.

howellinmad said:
I've looked all over the forums and all the threads on carrier switching refer to switching US S8 variants to US carriers.
Can someone please explain or point me to a thread that explains how to carrier switch Canadian providers that would be fantastic. In particular I want to go from Rogers to Freedom Mobile (aka wind mobile) . My phone has been factory unlocked.
Click to expand...
Click to collapse
I can tell you from experience that freedom does not have any carrier specific features, so doing a firmware switch wont benefit you in any way I dont think.
You can however go onto sammobile and download the firmware for freedom and flash it using Odin. Again probably no real benefits. You would benefit if you were going the other way tho, as Rogers, Bell and Telus have carrier specific settings in their firmwares.
But since you are carrier unlocked, you could try a factory reset then put your freedom sim in it and boot up. It might install the freedom files. My S7 worked this way when i went from a Bell locked phone to a Koodo sim...
Edit: That link has an unlocked canadian firmware as well, you could use that firmware too.

Open the dialer and type *#243203855# then select GLW, this will change your csc to wind mobile/freedom, it'll wipe your phone..

peachpuff said:
Open the dialer and type *#243203855# then select GLW, this will change your csc to wind mobile/freedom, it'll wipe your phone..
Click to expand...
Click to collapse
Hi Peachpuff. I have an unlocked S8 phone from a Bestbuy canada marketplace seller. I tried using your code to change to the Telus CSC so I can get VOLTE but got the invalid MMI code error message. The about phone says its an SM-G950FD, and the only code the phone appears to accept is the one displaying the EMEI.
Hope you have some guidance on that ?
Thanks

starview332 said:
Hi Peachpuff. I have an unlocked S8 phone from a Bestbuy canada marketplace seller. I tried using your code to change to the Telus CSC so I can get VOLTE but got the invalid MMI code error message. The about phone says its an SM-G950FD, and the only code the phone appears to accept is the one displaying the EMEI.
Hope you have some guidance on that ?
Thanks
Click to expand...
Click to collapse
That's not a canadian s8, its an international one, so that code won't work and i doubt you'll get volte working at all.
Just enjoy your root friendly multi sim phone.

Strange Network Issues With Unlocked SM-G935P (Sprint) on MetroPCS

Hey guys, I could use a little help here. I've done some firmware flashing on phones years ago, so I'm not a total noob, just haven't needed to in a long time.
Anyway, I recently picked up an unlocked Sprint S7 edge (was a really good deal) and I'm trying to use it with Metro now. The issue is this. If I set the network to GSM mode, I can make phone calls just fine, but data is totally not functioning. If I switch it to LTE/CDMA mode, the data works beautifully, but I can't make or receive any phone calls. It just instantly hangs up if I try to dial out or goes to voicemail if someone calls me.
I've activated the IMEI with my carrier and verified that the phone is indeed unlocked. I'm guessing this is just some annoying Sprint bug put in there to make the phone not work right on other providers. Any ideas what needs to be done? Do I need to run a third-party ROM, flash a different modem to it? Something else?
I really appreciate any tips here.

What firmware is the phone running?

lvpre said:
What firmware is the phone running?
Click to expand...
Click to collapse
Hi Ivpre,
Thanks for responding. The phone is running Software version G935PVPU6BRD2, baseband version G935PVPU6BRD2, it's HW revision 7.0 and Android 7.0. Kernel version is 3.18.31-12623509.
I've tried using a few SM-G935U ROMs but they all have failed so far and left the phone in a boot loop. Only by reflashing a Sprint ROM am I able to successfully flash it.
I assume I'm just not selecting or finding a ROM that the same or newer version, as I've read about the downgrade issues with the bootloader. Any idea how to match one? I'd be fine with pretty much any ATT/T-Mobile/Metro ROM since that should fix my issue for the time being. A factory unlocked ROM would be nice though.

I have a T-Mobile Sim (same network Metro uses) in my unlocked Sprint S7 Edge. Network mode is set to Automatic and everything works fine.
Did you Add the APN for T-Mobile? I had to add the T-Mobile APN https://support.t-mobile.com/docs/DOC-28006
And the ALSO add a second APN named internet, with no other values changed. The 2nd one is the one selected, not sure why, but it works that way.
I would like to flash a T-Mobile Rom or the U Rom but they are on Baseband 4, which will not work since our phones are now on Baseband 6(5th number from the right in the firmware version.)

Did you try changing the APN settings?

gullzway said:
I have a T-Mobile Sim (same network Metro uses) in my unlocked Sprint S7 Edge. Network mode is set to Automatic and everything works fine.
Did you Add the APN for T-Mobile? I had to add the T-Mobile APN https://support.t-mobile.com/docs/DOC-28006
And the ALSO add a second APN named internet, with no other values changed. The 2nd one is the one selected, not sure why, but it works that way.
I would like to flash a T-Mobile Rom or the U Rom but they are on Baseband 4, which will not work since our phones are now on Baseband 6(5th number from the right in the firmware version.)
Click to expand...
Click to collapse
So you are using the Sprint firmware on T-Mobile? Everything works well? I'm thinking of jumping to cricket this summer, but one phone is stuck on b5 (the other is still rocking 4), so I was a little worried. So basically you just put in the SIM card and added the APN's?

lvpre said:
So you are using the Sprint firmware on T-Mobile? Everything works well? I'm thinking of jumping to cricket this summer, but one phone is stuck on b5 (the other is still rocking 4), so I was a little worried. So basically you just put in the SIM card and added the APN's?
Click to expand...
Click to collapse
Yes it was working fine with a T-Mobile Sim card and edited APN's. It is now back on Sprint because T-Mobile coverage is poor/non existent inside my work. I will be porting one of my SERO lines to T-Mobile but keeping one with Sprint. T-Mobile only uses Band 2 and 4 where I live, If you live somewhere that has band 12, it may not be unlocked in the Sprint Firmware.

Sm-g935u oreo

I got the official Oreo on the u firmware, does anyone else have it and what are your thoughts i.e. Battery and screen on time, it seems a little faster to me.

cmlucht said:
I got the official Oreo on the u firmware, does anyone else have it and what are your thoughts i.e. Battery and screen on time, it seems a little faster to me.
Click to expand...
Click to collapse
I just flashed the stock Oreo G935UUEU4CRG2 firmware (Vzw) today. I will run it bone stock for a week and report back. I should be able to tell if there's a significant difference in battery life and performance from the stock V firmware because I've never rooted my S7 edge and have run the stock Verizon firmware since new. With this Oreo U firmware, I do hate how Samsung Pay has that quick launch edge feature at the bottom of the homescreen that can't be removed.

I am very interested in the U version of the firmware . I have the Verizon Galaxy S7 Edge G935V w/ Android 8.0 but use it on Straight Talk with their AT&T sim card.
I had to change it from CDMA to GSM, also had to add a new APN for Straight talk.
It works but the phone is missing LTE bands 12 and 17. Band 17 is used in my area and without it the phone connects
to a different band and its weak in my area.
I am trying to learn if I can put the G935U (AT&T) firmware on the G935V and will I get band 17.
I know band 17 is in my area because of my previous phone of a week ago, Nexus 5.
Would you know if it can be done, and where would I find recent info how to do this
along with what bands and features would be offered or not available.
Thanks,
Ken
tx_dbs_tx said:
I just flashed the stock Oreo G935UUEU4CRG2 firmware (Vzw) today. I will run it bone stock for a week and report back. I should be able to tell if there's a significant difference in battery life and performance from the stock V firmware because I've never rooted my S7 edge and have run the stock Verizon firmware since new. With this Oreo U firmware, I do hate how Samsung Pay has that quick launch edge feature at the bottom of the homescreen that can't be removed.
Click to expand...
Click to collapse

On my G935V, flashed with U Nougat firmware I have received the Oreo U upgrade.
It works great, the only issue is that it reverted the LTE bands to the typical V version bands. I had to re-activate the other LTE bands, just because... I can. My provider is still a Verizon MVNO, and VoLTE is working.
What I like about the Oreo is the Bluetooth codecs - besides the aptX and Samsung HD (UHQ) now Google provided native support for LDAC (Sony). I couldn't wait to get that, because I really wanted my Sony's MDR-1ABT headphones to be used in their full glory (LDAC codec).
PS: To appreciate the quality difference you need to listen to FLAC files.

KenKK said:
I am very interested in the U version of the firmware . I have the Verizon Galaxy S7 Edge G935V w/ Android 8.0 but use it on Straight Talk with their AT&T sim card.
I had to change it from CDMA to GSM, also had to add a new APN for Straight talk.
It works but the phone is missing LTE bands 12 and 17. Band 17 is used in my area and without it the phone connects
to a different band and its weak in my area.
I am trying to learn if I can put the G935U (AT&T) firmware on the G935V and will I get band 17.
I know band 17 is in my area because of my previous phone of a week ago, Nexus 5.
Would you know if it can be done, and where would I find recent info how to do this
along with what bands and features would be offered or not available.
Thanks,
Ken
Click to expand...
Click to collapse
Ken, first check out the supported bands between the Verizon and the AT&T S7 edge in the link below. It will confirm the discrepancy in supported bands between the two models.
https://www.phonemore.com/compare/p...5v-vs-samsung-galaxy-s7-edge-sm-g935a/3296028
Then go to this link and download, extract and Odin flash the AT&T "U" firmware and see if that will open up the AT&T bands for your Verizon S7 edge. It very well might. I think you should also choose the option in Odin to "Clear EFS" before you flash so that it can be rewritten fresh upon bootup with your AT&T sim card. Do this and report back your results. Good luck.
https://updato.com/firmware-archive-select-model?record=0A1AF06A906411E89F15FA163EE8F90B

Thank you for your reply.
I am downloading the firmware G935U (AT&T) firmware now. Its going to take several hours because I am not a member of that download site.
I did he A/B comparison and both phones seem to be identical except for the band coverage. The AT&T has band 12 which from my reading
is 700MHz and it includes the segment band 17 has so if I understand it right if I have band 12 I should be in good shape.
It also seems to have all the bands of the 935V except for band 13. The 935A has actually more bands of coverage.
Could you clear something up for me. Once I do this I am reading I can't go back to the Version S7 Edge G935V.
However would I be able to convert it to one of the other carriers like T-mobile ?
You are the first that stated to check the EFS box.
With ODIN I will be choosing all 4 files but making sure I do NOT choose the HOME file, is that correct?
After flashing are there any other special instructions I need to do or will the phone right after flashing just
need to go through the normal setup along with possible adding the same APN config I am using with it on Straight talk w/ the straight talk AT&T sim?
thank you,
Ken
tx_dbs_tx said:
Ken, first check out the supported bands between the Verizon and the AT&T S7 edge in the link below. It will confirm the discrepancy in supported bands between the two models.
https://www.phonemore.com/compare/p...5v-vs-samsung-galaxy-s7-edge-sm-g935a/3296028
Then go to this link and download, extract and Odin flash the AT&T "U" firmware and see if that will open up the AT&T bands for your Verizon S7 edge. It very well might. I think you should also choose the option in Odin to "Clear EFS" before you flash so that it can be rewritten fresh upon bootup with your AT&T sim card. Do this and report back your results. Good luck.
https://updato.com/firmware-archive-select-model?record=0A1AF06A906411E89F15FA163EE8F90B
Click to expand...
Click to collapse

KenKK said:
Thank you for your reply.
I am downloading the firmware G935U (AT&T) firmware now. Its going to take several hours because I am not a member of that download site.
I did he A/B comparison and both phones seem to be identical except for the band coverage. The AT&T has band 12 which from my reading
is 700MHz and it includes the segment band 17 has so if I understand it right if I have band 12 I should be in good shape.
It also seems to have all the bands of the 935V except for band 13. The 935A has actually more bands of coverage.
Could you clear something up for me. Once I do this I am reading I can't go back to the Version S7 Edge G935V.
However would I be able to convert it to one of the other carriers like T-mobile ?
You are the first that stated to check the EFS box.
With ODIN I will be choosing all 4 files but making sure I do NOT choose the HOME file, is that correct?
After flashing are there any other special instructions I need to do or will the phone right after flashing just
need to go through the normal setup along with possible adding the same APN config I am using with it on Straight talk w/ the straight talk AT&T sim?
thank you,
Ken
Click to expand...
Click to collapse
Yes you can go back to the stock verizon firmware.
There's two csc files in the firmware pack CSC_HOME will not wipe everything and the regular CSC wipes everything. You need to choose the regular CSC so it wipes everything. So backup your internal storage if needed. You may or may not need to manually enter your straight talk APN. Your SIM and APN should be detected upon first boot. Just make sure you choose the regular CSC file and not the CSC_HOME. You want to wipe everything and start fresh. If your APN doesn't automatically populate after flashing the rom then enter it manually. You should have no problems with this version of the U firmware.

G935V to G935U (AT&T)
If its written I have not found it yet but it would be nice to have a before and after as far as what you will gain and what you will loose after the firmware flash. It would cut down
on all the follow up questions, especially for me.
After flashing, you said I can return to stock firmware. Its strange I am reading you cannot return due to a BL that will not be compatible anymore with the Verizon firmware.
The G935V has been taking updates when it was on Verizon. Will this continue after changing it from a G935V (Verizon) to a G935U (AT&T) while on Straight Talk with their AT&T sim?
Does this G935U (AT&T) flash change any specific characteristics of the phone like its serial number and model #? I ask because the Samsung Smart Switch program besides
backing up your phone can also return it to stock (in case something corrupts it) and I am wondering if I give it the current serial# and model number G935V, will there be any problems since its model number firmware will be different.
I was advised when using ODIN under "Options" to check "Phone EFS Clear" . Does this still sound right. All other settings should stay as is.
Thank you,
Ken
tx_dbs_tx said:
Yes you can go back to the stock verizon firmware.
There's two csc files in the firmware pack CSC_HOME will not wipe everything and the regular CSC wipes everything. You need to choose the regular CSC so it wipes everything. So backup your internal storage if needed. You may or may not need to manually enter your straight talk APN. Your SIM and APN should be detected upon first boot. Just make sure you choose the regular CSC file and not the CSC_HOME. You want to wipe everything and start fresh. If your APN doesn't automatically populate after flashing the rom then enter it manually. You should have no problems with this version of the U firmware.
Click to expand...
Click to collapse

Q: After flashing, you said I can return to stock firmware. Its strange I am reading you cannot return due to a BL that will not be compatible anymore with the Verizon firmware.
A: When you flash a different U.S. firmware it has a bootloader included in the firmware. They can be flashed between the different U.S. firmware with no issue. the only time you may not be able to flash a firmware and bootloader is when you attempt to "downgrade your firmware to an earlier version.
Q: The G935V has been taking updates when it was on Verizon. Will this continue after changing it from a G935V (Verizon) to a G935U (AT&T) while on Straight Talk with their AT&T sim?
A: Yes, but the updates may not come as often as the carrier version of the firmwares such as Verizon, sprint, T-Mobile or AT&T. But you will get updates. It seems the carrier firmware will bring more frequent security patch updates than the "U" firmware.
Q: Does this G935U (AT&T) flash change any specific characteristics of the phone like its serial number and model #? I ask because the Samsung Smart Switch program besides
backing up your phone can also return it to stock (in case something corrupts it) and I am wondering if I give it the current serial# and model number G935V, will there be any problems since its model number firmware will be different.
A: No. The model#, IMEI, etc will not be affected. Only the software version will be affected as well as carrier specific update compatibility will be lost due to the "U" firmware.
Q: I was advised when using ODIN under "Options" to check "Phone EFS Clear" . Does this still sound right. All other settings should stay as is.
A: Yes. If you are having issues with network configs, you can choose to wipe efs so that it will rebuild upon first boot of the new firmware. This is only recommended if you have issues connecting to the network. Otherwise don't do it.

Since I'm on a roll I have another quesiton,
I dd a side by side comparison on this site
https://www.phonemore.com/compare/p...5u-vs-samsung-galaxy-s7-edge-sm-g935a/5532054
The phone called G935U has several more bands than the 935A (AT&T). Would this be a different G935U flash as compared
to the G935U (AT&T) ? If so would that not be the firmware to go with? It covers CDMA as well as GSM with the extra GSM bands.
This would be very similar to my G935V which offers CDMA and GSM.
Do I have it right NO CDMA capabilities on the G935U (AT&T) firmware?
Thank you for your replies its been very helpful. Its been a mystery trying to find out
what features you end up with with G935U and if their is a non provider version like in the above link.
Thank you
Ken
tx_dbs_tx said:
Q: After flashing, you said I can return to stock firmware. Its strange I am reading you cannot return due to a BL that will not be compatible anymore with the Verizon firmware.
A: When you flash a different U.S. firmware it has a bootloader included in the firmware. They can be flashed between the different U.S. firmware with no issue. the only time you may not be able to flash a firmware and bootloader is when you attempt to "downgrade your firmware to an earlier version.
Q: The G935V has been taking updates when it was on Verizon. Will this continue after changing it from a G935V (Verizon) to a G935U (AT&T) while on Straight Talk with their AT&T sim?
A: Yes, but the updates may not come as often as the carrier version of the firmwares such as Verizon, sprint, T-Mobile or AT&T. But you will get updates. It seems the carrier firmware will bring more frequent security patch updates than the "U" firmware.
Q: Does this G935U (AT&T) flash change any specific characteristics of the phone like its serial number and model #? I ask because the Samsung Smart Switch program besides
backing up your phone can also return it to stock (in case something corrupts it) and I am wondering if I give it the current serial# and model number G935V, will there be any problems since its model number firmware will be different.
A: No. The model#, IMEI, etc will not be affected. Only the software version will be affected as well as carrier specific update compatibility will be lost due to the "U" firmware.
Q: I was advised when using ODIN under "Options" to check "Phone EFS Clear" . Does this still sound right. All other settings should stay as is.
A: Yes. If you are having issues with network configs, you can choose to wipe efs so that it will rebuild upon first boot of the new firmware. This is only recommended if you have issues connecting to the network. Otherwise don't do it.
Click to expand...
Click to collapse

G935U Product Code USC vs. G935U (AT&T
Last night I flashed my G935U. It took 3 tries with the 3rd working after switching to a different ODIN reversion.
The phone works fine, no issues except I am disappointed I lost all the CDMA capabilities should I want to try straight talk with a Verizon sim.
After I flashed the file from the updato.com site I searched and found another G935U with Product Code USC. USA
https://updato.com/firmware-archive-select-model?record=05B44581906411E89F15FA163EE8F90B
A little more research and I found this is the unbranded version (correct me if I am wrong) The unbranded version appears
to retain CDMA plus have more GSM bands than the G935U (AT&T)
Could anyone offer some details on this firmware and could I have flashed this instead of the G935U (AT&T) to have retained
the CDMA and get more GSM bands.
Thanks, Ken
tx_dbs_tx said:
Ken, first check out the supported bands between the Verizon and the AT&T S7 edge in the link below. It will confirm the discrepancy in supported bands between the two models.
https://www.phonemore.com/compare/p...5v-vs-samsung-galaxy-s7-edge-sm-g935a/3296028
Then go to this link and download, extract and Odin flash the AT&T "U" firmware and see if that will open up the AT&T bands for your Verizon S7 edge. It very well might. I think you should also choose the option in Odin to "Clear EFS" before you flash so that it can be rewritten fresh upon bootup with your AT&T sim card. Do this and report back your results. Good luck.
https://updato.com/firmware-archive-select-model?record=0A1AF06A906411E89F15FA163EE8F90B
Click to expand...
Click to collapse

In my experience flashing another version will not add the bands. My case - I have flashed the "U" version on my "V" branded S7 Edge and the bands remained for Verizon. The modem firmware will read something that is flashed in the modem hardware and activate only those bands. There is a way to force other bands (see below).
More so, having the "U" Nougat, with modded LTE bands, I got the "U" Oreo upgrade from Samsung. After the upgrade to the "U" Oreo, the LTE bands reverted to the "V" ones (I had to re-enable them again).
I did "force" in the NV the new bands on my V using QPST and QXD professional Qualcomm tools, but since I don't really have a T-Mobile SIM I can't verify if the change works or it is something hardware (like RF amps) that is really missing.
How to: https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
The stock value for the "V" hardware, in the NV cell #6828 is 4190. That corresponds to LTE bands 2,3,4,5,7,13 (check with the LTE calculator).
I have changed the value to 2062440470751 that corresponds to bands 1,2,3,4,5,7,8,12,13,20,25,26,29,30,38,39,40,41 (close to what U would have natively). Again, I couldn't test if the software change is sufficient for them to actually work, but I have a feeling it does not.
When I traveled recently to EU, I have used cellmapper to check the LTE bands. I never saw B20, even if, on the map of that country, B20 was available in that rural location. I had only 3G.

G935U vs G935U
I posted the wrong link
This is the one I have my question on
https://www.phonemore.com/compare/p...5u-vs-samsung-galaxy-s7-edge-sm-g935a/5532054
This compares a G935U vs. a G935A
To get to the chase, what firmware would I flash to get the features of the G935U (left picture)
I just flashed my phone with the G935U (AT&T) and although it works fine with no AT&T bloatware it is missing
some of the GSM bands of the G935U (Left picture) and all of the CDMA bands.
Thank you,
Ken

Like I said above, the different firmware does NOT change the LTE bands.

KenKK said:
Last night I flashed my G935U. It took 3 tries with the 3rd working after switching to a different ODIN reversion.
The phone works fine, no issues except I am disappointed I lost all the CDMA capabilities should I want to try straight talk with a Verizon sim.
After I flashed the file from the updato.com site I searched and found another G935U with Product Code USC. USA
https://updato.com/firmware-archive-select-model?record=05B44581906411E89F15FA163EE8F90B
A little more research and I found this is the unbranded version (correct me if I am wrong) The unbranded version appears
to retain CDMA plus have more GSM bands than the G935U (AT&T)
Could anyone offer some details on this firmware and could I have flashed this instead of the G935U (AT&T) to have retained
the CDMA and get more GSM bands.
Thanks, Ken
Click to expand...
Click to collapse
G935U with Product Code USC is the "U.S. Cellular" network. I believe the way it works is the software will use the installed SIM to configure the network compatibility mode that will be available in network settings. The true "U" model of the S7 edge will have hard coded support for whichever bands samsung determines for that model number. The different versions of the "U" firmware are specific for whichever carrier/network the phone will be used on. I'm not sure which firmware would allow both GSM and CDMA networks to function simultaneously, but there is an app in google Play store called "network mode" and you could give it a try and see if it will open up simultaneous GSM/CDMA support in your network settings. I do know that Sprint's firmware does have GSM and CDMA support and I'm familiar with that because I have had sprint for nearly 10 years and have a lot of experience with the samsung software as I've built several ROM's including port ROM's over the past few years. Try the Sprint "XAS" firmware. That's the global version.