Database Users

[Q] AT&T over Verizon

So my question is quite simple, and before I get flamed, yes I have tried searching. I don't think I'm typing the correct sequence of words if there is already something on this. I never post obviously, I normally creep and derive my answers that way. Obvious again that I've been here since 2012
My question is if there is a way / guide to overwrite/reprogram the phone with the AT&T firmware and software and replace the Verizon that is currently on the device. I brought the phone over from Verizon to AT&T and there are just a couple complications that are just a bother and Just over it.
I would appreciate any guidance and information any of you could provide on the subject.

RonniEdwards said:
So my question is quite simple, and before I get flamed, yes I have tried searching. I don't think I'm typing the correct sequence of words if there is already something on this. I never post obviously, I normally creep and derive my answers that way. Obvious again that I've been here since 2012
My question is if there is a way / guide to overwrite/reprogram the phone with the AT&T firmware and software and replace the Verizon that is currently on the device. I brought the phone over from Verizon to AT&T and there are just a couple complications that are just a bother and Just over it.
I would appreciate any guidance and information any of you could provide on the subject.
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Click to collapse
I don't know if you can from a user stand point but when I was shopping around t-mobile store told me they would copy their firmware onto the phone so I could try their network. You may need to go to a store and talk to someone.

Since Verizon is CDMA and AT&T is GSM, I am not sure a simple firmware update is all that is needed to switch.

supersnackbar said:
Since Verizon is CDMA and AT&T is GSM, I am not sure a simple firmware update is all that is needed to switch.
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That's what I thought but they insisted they could do it. Maybe since there is a Sim slot it's easier on the the 3's.

Years ago you could almost swap sim cards and be good. Idk about it anymore. I think you would have to take all the system files/partitions and the radio and swap them for the carriers. Im sure someone else whos more, but i think it would be unreasonably hard to do.
Sent From My Galaxy Note 3

This thread is moving to T-Mobile, but the concept is the same for AT&T
http://forum.xda-developers.com/showthread.php?t=2582747
Sent from my Note 3 via Tapatalk

i believe that some services would work as the phone has some radios in it for the att bands, but you would be better off trading for an att version. swappa has stuff like that all the time to straight trade

Getting service to work and getting 4Glte was no issue. That just required me to manually input APNs that were AT&T specific and presto I have service and all that jazz. My issue is a couple of other small things that really aren't big hut just thst, annoying. That's why I was seeing about the software and firmware being flashed into the device.

Verizon vs T-Mobile S5 for TING?

Hello all,
I will need some UberGeek advice for this one...lol
I use TING as my MVNO provider. They offer CDMA and GSM networks backboning on Sprint and T-Mobile. I had to get a new phone and ordered a Sprint CDMA version G900P but received a Verizon model G900V. It works perfectly fine on the TING network.
I am just wondering if there is any reason not to get this phone and to go with a T-Mobile model instead? I normally would go Sprint/CDMA but wanted to try out GSM this time. Both have excellent coverage in my area. I also know about the ATT/Verizon bootloader being locked. I have already rooted this and it's running Lollipop just fine a sper the instructions found in threads here.
TING told me the phone is no different essentially and there should be no problems. As always their cust, svc. was excellent and informative. This phone apparently has dual radios...CDMA and GSM. I don't have to worry about warranties, KNOW tripping or Verizon's bs. As I said, I am rooted and running fine. I will either debloat this sucker or go with another ROM. Right now THE only bugaboo I see is that there are so few ROMs for the Verizon model. I am not into switching ROMs. If I ditch a debloated stock setup, it would have to be very something very clean and stable based on Lollipop. Seems like CM 12.1 could be nice but right now slightly risky and they don't have the Fingerprint feature working either.
Does anyone feel it would be smarter to return this and get a T-Mobile model? Any food for thought or advice or "Here is why you'll regret the Verizon model 6 months from now" kind of advice?
Thanks in advance!!!!!!!!

Besides the locked bootloader, the G900V is the same phone as the rest of the S5's (of course with different radios for CDMA). If you're cool with just running stock firmware forever then keep the Verizon model. The T-Mobile model would allow you to do whatever you like with it though, as the bootloader is unlocked. Virtually no possibility of losing root.

Sean89us said:
Besides the locked bootloader, the G900V is the same phone as the rest of the S5's (of course with different radios for CDMA). If you're cool with just running stock firmware forever then keep the Verizon model. The T-Mobile model would allow you to do whatever you like with it though, as the bootloader is unlocked. Virtually no possibility of losing root.
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Click to collapse
Thanks for the response. Pretty much what I figured. I have it rooted and using Safe Strap and MIGHT toy with CM 12.1 since there are many out there with the Verizon model that seem to like it. Plenty of YouTube videos too.

Differences between virgin and sprint samsung galaxy s7?

Ok so I have done some research on this topic, but i still have many questions. I have a virgin mobile s7 which i had to buy directly from them (i do not understand why though) and the phone says it is g930p (as if it were sprint). I know that virgin mobile is powered by the sprint network, but many things are still unclear to me. I would appreciate it if you guys could clear up some things for me. (I live in the USA btw)
1. Are there any differences in root method for the virgin galaxy s7 as compared to the sprint? I have been led to believe that there isn't, but i would appreciate knowing for sure. The reason why i am concerned is because it seems like root causes some problems with LTE and im wondering if the solutions would be the same across providers.
2. If i wanted to I could unlock my phone through virgin and use it with other cdma carriers right? For example, could i switch to sprint network?
3. Are there any other differences between sprint and virgin mobile galaxy s7's besides that they use different networks?
4. Would other guides such as gaining hotspot without root work on my virgin mobile galaxy s7?
5. If you have some spare time, I would appreciate a post that outlines all of the notable differences between a sprint galaxy s7 and a virgin mobile galaxy s7.
Thanks in advance!

Is something wrong?
It has been about two weeks since i made this post, and there has been no response. Is this typical of this website, (it is my first post so i do not know) or is there something about my question that is driving people off?

TheChap said:
It has been about two weeks since i made this post, and there has been no response. Is this typical of this website, (it is my first post so i do not know) or is there something about my question that is driving people off?
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Click to collapse
No difference in the phones. They are the exact same physical models. The root method should be the same, but you will have to do the option for hands free activation.
You won't be able to use it on sprint postpaid unless you find someone who is willing to switch it in the database...could be hard to do.
Hotspot guides will work, but you will have to flash the U firmware if you have a newer firmware.
Hope this helps.

Thanks
lvpre said:
No difference in the phones. They are the exact same physical models. The root method should be the same, but you will have to do the option for hands free activation.
You won't be able to use it on sprint postpaid unless you find someone who is willing to switch it in the database...could be hard to do.
Hotspot guides will work, but you will have to flash the U firmware if you have a newer firmware.
Hope this helps.
Click to expand...
Click to collapse
I appreciate the reply a lot. These things may be intuitive, but this is only my second time rooting a phone so i wanted to be sure i understood it correctly. Now i can start rooting with peace of mind. Thanks Again!

Want to move from Sprint to T-Mobile... too much info, need short answer

I'm kind of newb at this S7 stuff, I'm more of an HTC guy. Yesterday, I bought an unlocked G930P (sprint) and am not sure, but think I learned that normally, people don't change out the ROMs to use a different carrier, they simply unlock the phone and live with the old carrier's bloatware. I started reading up, and first learned that TWRP apparently isn't available on a Snapdragon processor, so the G930A, G930P, etc, aren't candidates for TWRP. At first, I was kind of dismayed. Then, I found the G930U ROM and on a whim, I tried punting the G930U ROM to the G930P. I bought the phone off craigslist, and he said he didn't know where HE got it from, but it was unlocked. Anyhow, the phone took the rom without a hitch and now it looks like a U model...
My goal: Go with T-Mobile. Use Wi-Fi calling. Eventually have Nougat. Remove bloatware, but possibly keep some nice T-Mobile add-ons, if any, because I don't have their service yet (I hated ATT's crapload of stuff). Note this isn't specifically a "TMobile" question, substitute your carrier of choice for the questions...
Get to the damned question, you say? Ok, here goes:
1. I'm not going to ask any "do these bands work" when moving from a P model to T mobile. You guys seem to fight about that stuff until you can't type any longer. I'm going to assume what whatever bands work, that's what I get. Unless I get a T-Mobile specific phone.
2. But I will ask this: do the over the air bands it uses depend on the baseband ROM that is on the device? This is something I can't figure out.
3. I heard T-Mobile uses an updated boot kernel (3.0?) and ATT & others use an older boot kernel, and that if I move to T-Mobile boot kernel, I can't go back to any of the older ones. This process I seriously don't understand. Can I run a T-Mobile OS (or any OS) while using an older boot kernel ROM? I would think NO, right?
4. I don't like all of Carrier X's bloatware. I'd rather use a stripped down, cleaner ROM. I guess there are apps for that, but is it cleaner to do it with a stripped down generic ROM that I see floating around?
6. Speaking of ROM's - I saw a lot of Xetheros or whatever ROM's floating around, but it seems like there aren't any for the snapdragon-based ones. Is this true? The posts on this site don't really talk much about the snapdragon-based phones and why there aren't any ROMs for them, and why it won't work, and what, if anything, is being done to get around this. I guess the G930U is Samsung's answer to that, and allows fooling around with roms, but will the other phones ever be actually rom-able, or should I ditch this G930P and actually buy a G930U? Now that my phone THINKS it's a G930U, did that get me around some weird barrier and NOW I can update other funky roms intended for a G930U?
I'm considering selling the G7 I just got and going from a G930F (now that I'm a bit wiser). Any common sense why not to do that? I already HAVE an ATT G7 (not the sprint one I just bought), but it has a "bad signal". It gets only about 1 bar indoors, on a good day. I took it to a repair facility and they said, "nothing wrong with the antenna, it's your mainboard, don't bother just buy a new phone". Anybody have any advice on that?
thanks

BroncoBilli said:
I'm kind of newb at this S7 stuff, I'm more of an HTC guy. Yesterday, I bought an unlocked G930P (sprint) and am not sure, but think I learned that normally, people don't change out the ROMs to use a different carrier, they simply unlock the phone and live with the old carrier's bloatware. I started reading up, and first learned that TWRP apparently isn't available on a Snapdragon processor, so the G930A, G930P, etc, aren't candidates for TWRP. At first, I was kind of dismayed. Then, I found the G930U ROM and on a whim, I tried punting the G930U ROM to the G930P. I bought the phone off craigslist, and he said he didn't know where HE got it from, but it was unlocked. Anyhow, the phone took the rom without a hitch and now it looks like a U model...
My goal: Go with T-Mobile. Use Wi-Fi calling. Eventually have Nougat. Remove bloatware, but possibly keep some nice T-Mobile add-ons, if any, because I don't have their service yet (I hated ATT's crapload of stuff). Note this isn't specifically a "TMobile" question, substitute your carrier of choice for the questions...
Get to the damned question, you say? Ok, here goes:
1. I'm not going to ask any "do these bands work" when moving from a P model to T mobile. You guys seem to fight about that stuff until you can't type any longer. I'm going to assume what whatever bands work, that's what I get. Unless I get a T-Mobile specific phone.
2. But I will ask this: do the over the air bands it uses depend on the baseband ROM that is on the device? This is something I can't figure out.
3. I heard T-Mobile uses an updated boot kernel (3.0?) and ATT & others use an older boot kernel, and that if I move to T-Mobile boot kernel, I can't go back to any of the older ones. This process I seriously don't understand. Can I run a T-Mobile OS (or any OS) while using an older boot kernel ROM? I would think NO, right?
4. I don't like all of Carrier X's bloatware. I'd rather use a stripped down, cleaner ROM. I guess there are apps for that, but is it cleaner to do it with a stripped down generic ROM that I see floating around?
6. Speaking of ROM's - I saw a lot of Xetheros or whatever ROM's floating around, but it seems like there aren't any for the snapdragon-based ones. Is this true? The posts on this site don't really talk much about the snapdragon-based phones and why there aren't any ROMs for them, and why it won't work, and what, if anything, is being done to get around this. I guess the G930U is Samsung's answer to that, and allows fooling around with roms, but will the other phones ever be actually rom-able, or should I ditch this G930P and actually buy a G930U? Now that my phone THINKS it's a G930U, did that get me around some weird barrier and NOW I can update other funky roms intended for a G930U?
I'm considering selling the G7 I just got and going from a G930F (now that I'm a bit wiser). Any common sense why not to do that? I already HAVE an ATT G7 (not the sprint one I just bought), but it has a "bad signal". It gets only about 1 bar indoors, on a good day. I took it to a repair facility and they said, "nothing wrong with the antenna, it's your mainboard, don't bother just buy a new phone". Anybody have any advice on that?
thanks
Click to expand...
Click to collapse
All U.S. models are built the exact same and will all accept each others firmware if done right , so any unlocked s7 you put the U firmware will essentially be a g930u other than the number stamped on the back , I dont believe the U firmware supports wifi calling or VOLTE , There is a t-mobile nougat firmware floating around if you want to try that , your att g7 if it has a hardware issue should be under warranty but if your using it with a different carrier I would flash the appropriate firmware to it and see if that fixes you signal issue and if not put it back to stock and call Samsung , as far as switching from the international model , Well i bought a international edge as soon as they release and it took a crap on me within 4 months and I was unable to warranty it , that was my only issue with using a international model but also i dont think you can get wifi calling on those either . hope that helps
edit* and yes the bands are dictated by the rom , U firmware opens all of them otherwise carrier roms unlock specific , and T-mobile nougat dowgrade back to MM will be dictated by the baseband , I know the Sprint nougat can be downgraded but not T-mobile for sure

goonygugle said:
All U.S. models are built the exact same and will all accept each others firmware if done right , so any unlocked s7 you put the U firmware will essentially be a g930u other than the number stamped on the back , I dont believe the U firmware supports wifi calling or VOLTE , There is a t-mobile nougat firmware floating around if you want to try that , your att g7 if it has a hardware issue should be under warranty but if your using it with a different carrier I would flash the appropriate firmware to it and see if that fixes you signal issue and if not put it back to stock and call Samsung , as far as switching from the international model , Well i bought a international edge as soon as they release and it took a crap on me within 4 months and I was unable to warranty it , that was my only issue with using a international model but also i dont think you can get wifi calling on those either . hope that helps
edit* and yes the bands are dictated by the rom , U firmware opens all of them otherwise carrier roms unlock specific , and T-mobile nougat dowgrade back to MM will be dictated by the baseband , I know the Sprint nougat can be downgraded but not T-mobile for sure
Click to expand...
Click to collapse
The U firmware does support WiFi calling and VoLTE on T-Mobile.

myphone12345 said:
The U firmware does support WiFi calling and VoLTE on T-Mobile.
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Click to collapse
I guess us AT&T users just done get them features =/ , is it enabled or do you have to do something to enable those features ?

goonygugle said:
I guess us AT&T users just done get them features =/ , is it enabled or do you have to do something to enable those features ?
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Click to collapse
I don't believe those features are supported on AT&T (probably at AT&T's own request). Perhaps that might change in the Nougat version but I wouldn't bet on it.

S8 transition from Sprint to Verizion

Ok I have been reading about this from multiple resources and haven't seen a direct answer to my issue so I wanted to ask the community here. I want to thank everyone In advanced for taking time to read this and help me out.
I purchased a US Sprint S8 from a friend. He's called them and they unlocked the phone for us. I am attempting to add it to my Verizon plan. They are giving me the run around stating the IMEI isn't compatible. I am not seeing how this is possible as the S8 is showing it's both CDMA & GSM compatible. One rep in their tech support stated they could add the IMEI into their database and that will help resolve this, which was two days ago when they submitted that request (48 hour turnaround). I follow up with them and they are telling me it's not CDMA compatible blah blah blah. Now, the other thing worth mentioning is that when I take my Verizon SIM and insert into the sprint S8, it states that it's not a valid SIM.
Anyone recommend what's the best course of action here? I'm not the most savvy person when it comes to dealing with Odin and rooting the phone. Worse case scenario I am going to drop this thing on ebay and try to recover my expense.
Have a great day!

Holleman67 said:
Ok I have been reading about this from multiple resources and haven't seen a direct answer to my issue so I wanted to ask the community here. I want to thank everyone In advanced for taking time to read this and help me out.
I purchased a US Sprint S8 from a friend. He's called them and they unlocked the phone for us. I am attempting to add it to my Verizon plan. They are giving me the run around stating the IMEI isn't compatible. I am not seeing how this is possible as the S8 is showing it's both CDMA & GSM compatible. One rep in their tech support stated they could add the IMEI into their database and that will help resolve this, which was two days ago when they submitted that request (48 hour turnaround). I follow up with them and they are telling me it's not CDMA compatible blah blah blah. Now, the other thing worth mentioning is that when I take my Verizon SIM and insert into the sprint S8, it states that it's not a valid SIM.
Anyone recommend what's the best course of action here? I'm not the most savvy person when it comes to dealing with Odin and rooting the phone. Worse case scenario I am going to drop this thing on ebay and try to recover my expense.
Have a great day!
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Click to collapse
The it's not CDMA is bull, Sprint is a CDMA carrier. The Sprint S8 also Supports Band 13.
Sent from my SM-G950U using Tapatalk

what model do you have?
My understanding is only 1 model is sold in the US, the SM-G950U. Has CDMA and all the LTE bands used in the US. Carriers just add their own bloatware.
Maybe you need a specific verizon sim. I know sprint needs specific sims for certain phones.

cpuspeed said:
what model do you have?
My understanding is only 1 model is sold in the US, the SM-G950U. Has CDMA and all the LTE bands used in the US. Carriers just add their own bloatware.
Maybe you need a specific verizon sim. I know sprint needs specific sims for certain phones.
Click to expand...
Click to collapse
The model in the US is SM-G950U on all carriers.
Sent from my SM-G950U using Tapatalk

Holleman67 said:
Ok I have been reading about this from multiple resources and haven't seen a direct answer to my issue so I wanted to ask the community here. I want to thank everyone In advanced for taking time to read this and help me out.
I purchased a US Sprint S8 from a friend. He's called them and they unlocked the phone for us. I am attempting to add it to my Verizon plan. They are giving me the run around stating the IMEI isn't compatible. I am not seeing how this is possible as the S8 is showing it's both CDMA & GSM compatible. One rep in their tech support stated they could add the IMEI into their database and that will help resolve this, which was two days ago when they submitted that request (48 hour turnaround). I follow up with them and they are telling me it's not CDMA compatible blah blah blah. Now, the other thing worth mentioning is that when I take my Verizon SIM and insert into the sprint S8, it states that it's not a valid SIM.
Anyone recommend what's the best course of action here? I'm not the most savvy person when it comes to dealing with Odin and rooting the phone. Worse case scenario I am going to drop this thing on ebay and try to recover my expense.
Have a great day!
Click to expand...
Click to collapse
I am thinking that you may need to flash the unlocked firmware(G950U1) to your phone, which is XAA. Unlocked firmware includes many US CSC codes that should be compatible with most US carriers. Your Sprint phone may only have its own CSC which could be SPR, but Verizon's CSC is VZW.
Check out this thread: https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817 Ask your question on that thread as well.

Charkatak said:
I am thinking that you may need to flash the unlocked firmware(G950U1) to your phone, which is XAA. Unlocked firmware includes many US CSC codes that should be compatible with most US carriers. Your Sprint phone may only have its own CSC which could be SPR, but Verizon's CSC is VZW.
Check out this thread: https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817 Ask your question on that thread as well.
Click to expand...
Click to collapse
Based off reading that thread you mentioned that would make sense hypothetically. Would you or anyone be aware if I flash this and it still doesn't work, can I flash back to sprint and sell it as a standard sprint phone? Don't want it bricked or be out the $$ by my half ass attempt of acting like I know what I'm doing.

Holleman67 said:
Based off reading that thread you mentioned that would make sense hypothetically. Would you or anyone be aware if I flash this and it still doesn't work, can I flash back to sprint and sell it as a standard sprint phone? Don't want it bricked or be out the $$ by my half ass attempt of acting like I know what I'm doing.
Click to expand...
Click to collapse
It is always a risk, but first I flashed my unlocked model to T-Mobile firmware(using regular Odin app), used it for 2 months and recently flashed back(using custom Odin app) to unlocked firmware before putting my phone for sale of eBay. I personally take the risk especially if it doesn't work for you with Verizon and don't see a reason why you wouldn't be able to flash back in case you need it. In other words if you phone enters download mode, then it should be able to flash.

Charkatak said:
It is always a risk, but first I flashed my unlocked model to T-Mobile firmware(using regular Odin app), used it for 2 months and recently flashed back(using custom Odin app) to unlocked firmware before putting my phone for sale of eBay. I personally take the risk especially if it doesn't work for you with Verizon and don't see a reason why you wouldn't be able to flash back in case you need it. In other words if you phone enters download mode, then it should be able to flash.
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Click to collapse
Tried to flash to g950u1 tonight and it didn't help the SIM issue. Going to try the Verizon version and also as the store to give me a new SIM card. Hoping this works out soon
Appreciate the advice!