Database Users

[Q] Unlocked Atrix

Hello my friends,
i was in vacation and a I bought a unlocked atrix 4g. My phone have AT&T logo at the back but it is unlocked for any GSM carrier.
OK ! I returned to Brazil and now i want install the homebase ROM.
My doubt is ..... which kind of ROM should I use ? International or AT&T ? I dont know which group my phone belongs. Because it's unlocked but he has the AT&T ROM.
Thanks for the support.

So it is an at&t phone right?
Lets try to find The logical thing to do here...
Its an at&t phone with at&t ROM... Uhm What do you think?
Sent from my MB860 using Tapatalk

Thanks for your reply.
Yeah, following the logical though I need install the AT&T ROM. But my doubt is:
The cellphone is unlocked and I use it with other GSM carrier than AT&T. If I install the home base ROM for AT&T smarthphones there is some risk to have my phone Locked again to AT&T carrier ? Or, for the reason I have a unlocked cellphone and use it in international area, I should install the international ROM ?
Thanks for your attention

I own an unlocked at&t atrix with my carrier in México wich is Telcel. With an at&t ROM. No problem at all.
Doesnt lock again
Sent from my MB860 using Tapatalk

The phone won't be locked again once it's carrier-unlocked (sim unlocked).
It's totally unrelated to the ROM you use for your phone. You can install any ROM you like on your phone. This is from my own experience.

mraxido said:
I own an unlocked at&t atrix with my carrier in México wich is Telcel. With an at&t ROM. No problem at all.
Doesnt lock again
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
sspa said:
The phone won't be locked again once it's carrier-unlocked (sim unlocked).
It's totally unrelated to the ROM you use for your phone. You can install any ROM you like on your phone. This is from my own experience.
Click to expand...
Click to collapse
Really thanks for the answers!
My logical thinking was... my phone have a different configuration to accept all gsm carriers, and i was affraid to lose that configuration after install ROM's and other things ! A noob doubt ! Thanks for the attention

Which Rom Thread

I just won a Galaxy S 4 At&t, but I'm a T-Mobile Guy. The device is coming to me unlocked, if I can get it off of Edge and running correctly, do I flash At&t custom rom or T-Mobile?
I would think At&t and go with the device model but I could be wrong.

i'd flash ATT roms and manually input my tmobile APNs. be sure to follow the correct procedures for rooting/flashing on our bootloader-locked devices. if your device arrives with the MF3 build, read up before you proceed as there are many ways to brick your device on that firmware release. cheers

I would sell it while it's still brand new, unused. Get the maximum dollar for it. Then go and buy a T-Mobile S4.
The biggest reason is, you don't want the AT&T locked bootloader. If you get an OLD S4, then you can flash custom ROM's. If you get an S4 with the most recent firmware on it, then you're screwed and can't flash any custom ROM's.
Either way, if you're not an AT&T user then DON'T get an AT&T S4.

CZ Eddie said:
I would sell it while it's still brand new, unused. Get the maximum dollar for it. Then go and buy a T-Mobile S4.
The biggest reason is, you don't want the AT&T locked bootloader. If you get an OLD S4, then you can flash custom ROM's. If you get an S4 with the most recent firmware on it, then you're screwed and can't flash any custom ROM's.
Either way, if you're not an AT&T user then DON'T get an AT&T S4.
Click to expand...
Click to collapse
Well, if he chooses to keep that phone, there's an option BUT ONLY if the phone came with MDB/MDL update. Then he can use loki to bypass the locked bootloader and install custom roms.
Just an option, not great but still an option :cyclops:
Personally, I'd go with CZ Eddie's post lol

Excuse me sir, how can I win an s4?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

The device might update itself if it connects to the network. Don't connect to your wifi until you know what version you have. The MF3 update closes the exploit that was being used to root, I believe.

Hi. So i just bought a i337 i guess this is the at&t right. So i can flash any rom as long as i have the loki kernel right. And yes i have the MDL so i guess is ok. To use loki. And is there a way to do a bootloader unlock?. Thanks
Enviado desde mi SAMSUNG-SGH-I337 usando Tapatalk 2

sg3love said:
Excuse me sir, how can I win an s4?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
PinStack.com has great Anniversary Contests, this was their 9th

bighleo114312 said:
Hi. So i just bought a i337 i guess this is the at&t right. So i can flash any rom as long as i have the loki kernel right. And yes i have the MDL so i guess is ok. To use loki. And is there a way to do a bootloader unlock?. Thanks
Enviado desde mi SAMSUNG-SGH-I337 usando Tapatalk 2
Click to expand...
Click to collapse
The bootloader is still locked and cannot be unlocked.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

Ahh go here, it will explain how and what to do to run other carriers roms on your newly won g4...
[GUIDE][ROMS]RUN OTHER CARRIER ROMs on AT&T/TMO/Canadian S4 devices. Here's how! http://forum.xda-developers.com/showthread.php?t=2295557

Official rom flashing

is flashing official rom from sammobile.com will brick my mobile???
or create IMEI problem.
As i rooted my current official firmware. i want to go back to stock. but i took backup of my efs folder but i haven't found any nv_data file on it.
Please advise is official rom will to create IMEI probem.

Depends on which phone and firmware u got
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4

Demented22 said:
Depends on which phone and firmware u got
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4
Click to expand...
Click to collapse
i bought my mobile from France so i download this rom
I9505XXUBMEA_I9505OXXBMF1_XEF MAIN
which i download from sammobile.com

Ohhh gotcha
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4

I was actually wondering... If I'm network locked and I flashed a new stock ROM, would it remove the network lock? I don't think it will, but just want to confirm and to know the rationale behind all of it. I was thinking of rooting my S4 to get it to downgrade and have the network lock removed, but don't know about all these things. A lot of threads mention rooting for custom firmwares but not rooting in order to remove network lock afterwards.
Sent from my GT-I9505 using Tapatalk 4

ladyhaly said:
I was actually wondering... If I'm network locked and I flashed a new stock ROM, would it remove the network lock? I don't think it will, but just want to confirm and to know the rationale behind all of it. I was thinking of rooting my S4 to get it to downgrade and have the network lock removed, but don't know about all these things. A lot of threads mention rooting for custom firmwares but not rooting in order to remove network lock afterwards.
Sent from my GT-I9505 using Tapatalk 4
Click to expand...
Click to collapse
Flashing any rom will not remove the network lock... but it can brick ur phone if u flashed a rom that is not intended for ur phone, if u want to get it unlocked ur best option for that is call ur current carrier to get the unlock code, it could cost u for the code but thats about the only way besides rooting and trying to unlock it that way after root.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 4

I've unlocked my phone using an unlock code with one of those websites. It's a success. No problems. The problems I encountered recently had to do with the defective battery that came with my S4. What I'm curious to know now is if I can flash a ROM from my country where I got my phone... Just to make it like an unbranded phone. This is because when I boot up my phone, I see my carrier's logo and one of the wallpapers they replaced with their carrier logo as well. It's pretty annoying... So I wonder if I can flash a non-carrier unbranded ROM from my country to my phone. And do ai need to root to do so?
Sent from my GT-I9505 using Tapatalk

[Q] International Unlock On STOCK NG2

Hi, I've been reading a lot of posts and finally got courage to ask if there's a way to do a international unlock on Sprint Samsung Galaxy S4 running stock NG2, i already tried to downgrade to MF9 but couldn't pass in odin.
Any thoughts?

mbwprod said:
Hi, I've been reading a lot of posts and finally got courage to ask if there's a way to do a international unlock on Sprint Samsung Galaxy S4 running stock NG2, i already tried to downgrade to MF9 but couldn't pass in odin.
Any thoughts?
Click to expand...
Click to collapse
I would really like to know this as well I got caught up in the MF9 boot loop. Fixed that then tried to go MJA MDC MF9 and broke thing horribly. Just trying to get my Sprint Samsung S4 SPH-L720 over to T-mobile or at&t. Someone that could point us in the right direction with getting NG2 unlocked Internationally then domestically

mbwprod said:
Hi, I've been reading a lot of posts and finally got courage to ask if there's a way to do a international unlock on Sprint Samsung Galaxy S4 running stock NG2, i already tried to downgrade to MF9 but couldn't pass in odin.
Any thoughts?
Click to expand...
Click to collapse
Mozze3291 said:
I would really like to know this as well I got caught up in the MF9 boot loop. Fixed that then tried to go MJA MDC MF9 and broke thing horribly. Just trying to get my Sprint Samsung S4 SPH-L720 over to T-mobile or at&t. Someone that could point us in the right direction with getting NG2 unlocked Internationally then domestically
Click to expand...
Click to collapse
Looks like neither of ya'll read enough. Well follow this thread.
http://forum.xda-developers.com/showthread.php?t=2703955
There are other similar threads to search and read on.
Once we got the 4.3 MJA update. There was when out bootloader got locked by knox security from Samsung. We can't downgrade to any firmware by Odin but we can downgrade by ROMs just not the bootloader. You either need to use the firmware you are using to restore or update to a newer firmware.
Side comment. I still don't know why would you buy a specific phone for a carrier and use it for another carrier. Doesn't make sense.
Sent from my SPH-L720

ROMANTiC KiD said:
Looks like neither of ya'll read enough. Well follow this thread.
http://forum.xda-developers.com/showthread.php?t=2703955
There are other similar threads to search and read on.
Once we got the 4.3 MJA update. There was when out bootloader got locked by knox security from Samsung. We can't downgrade to any firmware by Odin but we can downgrade by ROMs just not the bootloader. You either need to use the firmware you are using to restore or update to a newer firmware.
Side comment. I still don't know why would you buy a specific phone for a carrier and use it for another carrier. Doesn't make sense.
Sent from my SPH-L720
Click to expand...
Click to collapse
It's all about pennies, here in Mexico it's almost 1/3 of retail price if you bring a smartphone from USA and unlock it

mbwprod said:
It's all about pennies, here in Mexico it's almost 1/3 of retail price if you bring a smartphone from USA and unlock it
Click to expand...
Click to collapse
But why use a CMDA phone with a GSM carrier?
Sent from my SPH-L720

ROMANTiC KiD said:
But why use a CMDA phone with a GSM carrier?
Sent from my SPH-L720
Click to expand...
Click to collapse
First of all thanks for the thread you provided, it helped me to get my phone unlocked and working on Telcel Mexico Carrier, but i can't make 3g service work, i think i screwed some ServiceMode Settings, is there any way to reset them to default and start over?
Thanks in advance

mbwprod said:
First of all thanks for the thread you provided, it helped me to get my phone unlocked and working on Telcel Mexico Carrier, but i can't make 3g service work, i think i screwed some ServiceMode Settings, is there any way to reset them to default and start over?
Thanks in advance
Click to expand...
Click to collapse
You might want to Odin back to stock ng2 and do a factory reset. Also have you change your apns? That could be why you aren't getting 3g.
Sent from my SPH-L720 using XDA Free mobile app

ROMANTiC KiD said:
You might want to Odin back to stock ng2 and do a factory reset. Also have you change your apns? That could be why you aren't getting 3g.
Sent from my SPH-L720 using XDA Free mobile app
Click to expand...
Click to collapse
I just did that and several apps (Internet, S Voice, S Wave) keep crashing after restart) also the ServiceMode Settings remain unchanged. Please help me here, I'm starting to panic!

Flashing

Hi!
I have had a Sprint S4 (SPH-L720) for quite a while, now. I SIM-unlocked it to work with Virgin Mobile / Bell (Canada).
How do I flash it to SGH-i337m using Odin? It always failed, so far. And I do not want to brick it.
Thanks =)
Sent from my SGH-M919V using Tapatalk

EvilKittyCupcake said:
Hi!
I have had a Sprint S4 (SPH-L720) for quite a while, now. I SIM-unlocked it to work with Virgin Mobile / Bell (Canada).
How do I flash it to SGH-i337m using Odin? It always failed, so far. And I do not want to brick it.
Thanks =)
Sent from my SGH-M919V using Tapatalk
Click to expand...
Click to collapse
You can't coz are different devices. Don't try it more or you will own a paperweight.

Every phone is a different device.. I do not see your point, sorry.
Sent from my SGH-M919V using Tapatalk

@EvilKittyCupcake: The SPH-L720 is a CDMA device while the SGH-I337M is a GSM device. The different model numbers alone should be sufficient to tell you what you're trying to do is impossible. However, to enforce this both Odin and Kies only allow you to flash ROMs for the model of device you actually have by polling the device itself prior to flashing. Therefore, trying to flash an I337M ROM on a L720 will ALWAYS fail.
Attempting to force the issue may brick the S4, so stop trying it.

I flashed a M919V ROM on an i337M successfully despite them being different model numbers.
Sent from my SGH-M919V using Tapatalk

EvilKittyCupcake said:
I flashed a M919V ROM on an i337M successfully despite them being different model numbers.
Sent from my SGH-M919V using Tapatalk
Click to expand...
Click to collapse
Sure sometimes it works. But there is absolutely no point in doing so.

The M919V and I337M are both GSM and are actually the same hardware, so that may be an instance where it actually works, although it shouldn't. As Lennyz1988 has noted, there's really no point to it. About the only reason someone would even try placing a GSM ROM on a CDMA device is to convert the phone to GSM so it can be used on a GSM network. Is that the reason you're trying this?

Strephon Alkhalikoi said:
The M919V and I337M are both GSM and are actually the same hardware, so that may be an instance where it actually works, although it shouldn't. As Lennyz1988 has noted, there's really no point to it. About the only reason someone would even try placing a GSM ROM on a CDMA device is to convert the phone to GSM so it can be used on a GSM network. Is that the reason you're trying this?
Click to expand...
Click to collapse
Yeah, that is the reason why =)
Sent from my iPhone 5S using Tapatalk

Flashing a GSM ROM to a CDMA device won't enable GSM. To change from CDMA to GSM requires working in the S4's service menus, which is not for the faint of heart. Don't ask me the steps involved either, because I don't know them. The one time I mucked around in the service menu, I lost my SIM unlock for a few days until I resolved the problem. I'm lucky that's all I lost, as I could have bricked my S4.