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[Q] AT&T S4... Switch to T-mobile S4

I Have the AT&T S4... should I switch to T-mobile S4? (bootloader issues)... I want to make the move before I can no longer return my AT&T S4... any thoughts? I know the AT&T S4 would tend to have more going on in terms of roms and development, but even well known devs are saying stay away from this version... seems like they dont think it's gonna happen soon at all.

From what I read on the T-Mobile forums they are still trying to figure out if the bootloader is locked like ours
Sent from my SAMSUNG-SGH-I337 using xda premium

t2abousa said:
I Have the AT&T S4... should I switch to T-mobile S4? (bootloader issues)... I want to make the move before I can no longer return my AT&T S4... any thoughts? I know the AT&T S4 would tend to have more going on in terms of roms and development, but even well known devs are saying stay away from this version... seems like they dont think it's gonna happen soon at all.
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right there with you, i've got 13 more days to return-no-questions-asked, just a little butt-hurt i already traded my lovely GS2 in :crying: should have kept that little sucker around until all this washed over. I would go over to HTC One, as it is developer-friendly, but i just can't bring myself to a non-reparable design as these USB ports at the bottom go after time, no swapable batt, and missing micro SD card (love having my pics there in case phone dies, while it's not the ultimate in security, it's at least a small form of backup). Also, the added screen real estate i think is the perfect phone size.
Really hoping the TMob version can be SIM swapped, might not make it to my return date to get confirmation on this....boo

I am thinking of going HTC one. Cant afford to wait a year for potential screw up where Samsung releases an unlock. There will be no unlock for boot loader u less Samsung or somebody working there leaks it.
Sent from my SAMSUNG-SGH-I337 using xda premium

Can anyone link me to the tmobile forum for this phone? Can't seem to find it lol

Questions go in Q&A
Thread moved

Get out while you still can
SENT FROM MY LTEVO

Apparently the t-mobile bootloader is unlocked, read the third paragraph
http://www.xda-developers.com/android/official-and-confirmed-att-galaxy-s-4-is-bootloader-locked/

crt60 said:
Apparently the t-mobile bootloader is unlocked, read the third paragraph
http://www.xda-developers.com/android/official-and-confirmed-att-galaxy-s-4-is-bootloader-locked/
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Figures... now to see if I can buy the T-mobile version without having a t-mobile line. At&T and Verizon dont allow it. Anyone know if they will let you?

t2abousa said:
Figures... now to see if I can buy the T-mobile version without having a t-mobile line. At&T and Verizon dont allow it. Anyone know if they will let you?
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This site claims to have the unlocked US T-Mobile S4 available for pre-order. I have no experience with them, but they are mentioned several times in the S4 forums.
http://negrielectronics.com/catalogsearch/result/?q=s4#.UYDASknD_IU
...and for $70 cheaper than the AT&T unlocked S4!

scott14719 said:
This site claims to have the unlocked US T-Mobile S4 available for pre-order. I have no experience with them, but they are mentioned several times in the S4 forums.
http://negrielectronics.com/catalogsearch/result/?q=s4#.UYDASknD_IU
...and for $70 cheaper than the AT&T unlocked S4!
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Nice, thanks! My concern is that they are probably talking about sim unlock which is possible on At&T already, I wish we had someone who owns a t-mobile S4 and can confirm an unlocked or unlockable bootloader.
EDIT: Looks like according to the t-mobile forum theirs is unlocked bootloader. Im hoping we can just get the bootloader unlocked by then but if not.. plan B!

t2abousa said:
Nice, thanks! My concern is that they are probably talking about sim unlock which is possible on At&T already, I wish we had someone who owns a t-mobile S4 and can confirm an unlocked or unlockable bootloader.
EDIT: Looks like according to the t-mobile forum theirs is unlocked bootloader. Im hoping we can just get the bootloader unlocked by then but if not.. plan B!
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Wasn't your original question about where to buy a T-Mobile S4 without having a T-Mobile line? If so, that site claims to have them. If you are planning on using the T-Mobile S4 on AT&T networks it will need to be sim unlocked. Otherwise, I'm not sure why you are looking to buy a T-Mobile S4 without having a T-Mobile line. As far as the bootloader goes, AT&T is locked, T-Mobile is not, but that has nothing to do with a T-Mobile phone on an AT&T line? Maybe I am just not understanding what you are looking for?

[Q] Sprint S5 can be used on T-mobile?

Just got a Galaxy S5 from a vendor for free but with Sprint. I'm on t-Mobile, is there any way to make it work with t-Mobile by chance? Sorry haven't rooted or ROM'd a phone since my good ole days on the HTC EVO. I tried to search the forums, apologize if this has been asked and answered.

pdub110 said:
Just got a Galaxy S5 from a vendor for free but with Sprint. I'm on t-Mobile, is there any way to make it work with t-Mobile by chance? Sorry haven't rooted or ROM'd a phone since my good ole days on the HTC EVO. I tried to search the forums, apologize if this has been asked and answered.
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I have the same question...I'm not on Tmobile yet but I have a Sim card and was going to try and activate but I think I'll Root and Custom Recovery first...My device is one I got a good price because it has a bad ESN for Sprint so yeah...I hope it can go on Tmobile :silly:
* I'm not 100% sure but I think the Sprint S5's are GSM Unlocked.....Can some one confirm?

pdub110 said:
Just got a Galaxy S5 from a vendor for free but with Sprint. I'm on t-Mobile, is there any way to make it work with t-Mobile by chance? Sorry haven't rooted or ROM'd a phone since my good ole days on the HTC EVO. I tried to search the forums, apologize if this has been asked and answered.
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If it supports the LTE bands that TMO uses, then go for it.
Check out gsmarena or some other sites to compare which LTE bands it supports and for which bands TMO is using.
But its quite likely it does NOT support all LTE bands, if any.

i dont think it can
unlocking it only lets you use it internationally

eyecon82 said:
i dont think it can
unlocking it only lets you use it internationally
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I tried putting my SIM card in, says Not Valid SIM. I'm guessing i could probably get around that somehow but i don't know if all the LTE bands are supported. I'm busy with work but if i somehow figure it out i will post something. But i guess i should start with the radio's as suggested.

[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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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.

ATT V20 to T-Mobile Question.

So I have searched the internet and found no good/complete answers for this, I apologize if it's been discussed.
I purchased an ATT V20 while I still had ATT. I've since switched T-MOBILE. My device is carrier unlocked but plenty of T-MOBILE features seem to look for certain software (i.e. mobile hotspot) that is ATT branded and nonfunctioning. Since o am operating fully on T-MOBILEs bands and what not, is there any way to flash my OS/kernel/etc to essentially make this phone T-Mobile branded. I am aware I will probably need to root if possible during the process, but im not looking for a relationship phone (right meow). Just a better functioning T-Mobile V20.
Thanks!
(Also I know all of this comes with risks, but I am out of the country and unable to get to a store should I brick it, so a good recovery option would be nice, but I think we are still stuck for ATT variant.)

What's a relationship phone? And are you a cat?
Sent from my LG-LS997 using Tapatalk

It would probably be cheaper to see if you can trade the device in to T-Mobile, get the credit for it, and just get a V20 from them.

Possibly sell on Swappa and find a us996 or h918 for around $400 or cheaper on sale.

Was really hoping you all were gonna tell me I could just flash TMobile to it... It seems that's not happening

ConstantineEX said:
Was really hoping you all were gonna tell me I could just flash TMobile to it... It seems that's not happening
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I don't think it would let you, and if you managed it, you'd be probably dealing with an irreversible brick.

You could TRY to use a Tmo rom but if you flash a Tmo KDZ(somehow) then you will 100% brick with no way to recover.

I did not want to make a whole new post, so I'm asking my question in this thread because it seem to be close to my question. I am getting a AT&T LG-V20 and I want to root it. is there a good reliable root out for this phone?

marknderm said:
I did not want to make a whole new post, so I'm asking my question in this thread because it seem to be close to my question. I am getting a AT&T LG-V20 and I want to root it. is there a good reliable root out for this phone?
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https://forum.xda-developers.com/v20/development/ls997vs995h910-dirtysanta-bootloader-t3519410
This only works if your Rom version is under ZV6 and security patch before December 2016 I believe.

kamekaz3 said:
https://forum.xda-developers.com/v20/development/ls997vs995h910-dirtysanta-bootloader-t3519410
This only works if your Rom version is under ZV6 and security patch before December 2016 I believe.
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ZV6 is Sprint. I think ATT is on 10N.

Zacharee1 said:
ZV6 is Sprint. I think ATT is on 10N.
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What? My sprint phone came with zv3. Never heard of 10N either because atnt uses the same version format.

kamekaz3 said:
What? My sprint phone came with zv3. Never heard of 10N either because atnt uses the same version format.
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ATT doesn't use the same version format. Look at opensource.lge.com: http://opensource.lge.com/osSch/list?types=ALL&search=H910

Mobile Networks Are Currently Blocked..?

Hey everyone, I could really use some help. (Sorry if this is in the wrong place)
I'm in the USA, on Verizon. I got a note FE the other day (SM-N935L) and went to put in the sim card but it keeps telling me the mobile networks are currently blocked and to contact customer service but I can't do that because I can't currently make calls or have data. Any help would be appreciated. If you need more info to possibly help, just let me know.
Thank you

This device doesn't work for Verizon or sprint it's GSM only.

scrumptyous said:
This device doesn't work for Verizon or sprint it's GSM only.
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Well... darn it... Do any of the models? And why doesn't it work? (Just asking so I can learn)

Jedibkj said:
Well... darn it... Do any of the models? And why doesn't it work? (Just asking so I can learn)
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Probably not,AT&T & T-Mobile are your best bets for using international phones on their networks & associated MVNOs.
Not trying to sound like a jerk,but,Google is your friend on the subject.
Here's a fairly recent write up giving a Readers Digest summary:
https://www.whistleout.com/CellPhon...y-verizon-sprint-phone-on-a-different-network
Also,try these sites for specific device compatibility:
https://www.frequencycheck.com/
https://willmyphonework.net/
@Jedibkj :
Here's another older article attempting to clear the air on the subject of Verizon & phones from elsewhere/not branded/specific to their network:
https://www.cnet.com/news/bringing-your-own-smartphone-to-verizon-what-do-i-need-to-worry-about/
Also,here's Verizon's BYOD Compatibility page:
https://www.verizonwireless.com/bring-your-own-device/

Jedibkj said:
Well... darn it... Do any of the models? And why doesn't it work? (Just asking so I can learn)
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Yeah as stated above google helps you out tons when you are in the market for a new device. I never looked for international devices or non-carrier branded phones while I was with Verizon and Sprint they are CDMA and most unlocked devices are GSM. For me I just knew for most functions to work on my phone they had to have the sprint or verizon logo on them some where.
I have not looked back since I left both of the above companies because I feel I have so many more options now. There are others who have made the same mistake and I have seen their listings on ebay. There are lots of people looking for this device so at least you can get your money back by selling it if you need to. (swappa is a good option for selling as well)

Thank you for all the info! I thought it was CDMA compatible but I guess I was wrong.. :/ I need to check more before buying! Live and learn I guess... I'll probably end up reselling it.
Thank you for all the help!

My K model gets full LTE signal and bars on Cricket. I'm in Phoenix.