Develop Bugs

[Q] Can you use this on AT&T network and vice versa when unlocked?

Hi,
I basically want to know if there is any difference between these devices, other than network provider lock.
Can you use the ROMs interchangeably?

I think the tmo model does support att's bands and u can probably interchange roms as well like on the tmo s2 and the skyrocket
Sent from my Galaxy Nexus using Tapatalk 2

minhajmsd said:
I think the tmo model does support att's bands and u can probably interchange roms as well like on the tmo s2 and the skyrocket
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
We don't know for sure yet that the ROMs will be interchangeable. However, given that most T-Mobile phones support the 850/1900 NAM bands (GSM) needed for AT&T HSPA+, as long as the phone is unlocked it should work fine.
Sent from my HTC_Amaze_4G using xda premium

In thinking of doing this. Does anyone know if it works with the Medianet data plan?
Sent from my Galaxy Nexus

Faideelah said:
In thinking of doing this. Does anyone know if it works with the Medianet data plan?
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
The Galaxy S2 did. Reading the specs page on the Tmobile website, I've come to the conclusion that the bands are identical to the AT&T variant's. I'm going to be doing the same thing.

Will hspa+ work? If so, tmo users who will be paying full price would be better off
Buying from att because its less than tmos full price cost.
Plus wireless tethering would work Because tmo doesn't have imei # of att phone.
Can anyone confim?

i would like to know this as well, paying 549 if a lot better than 639.
QUOTE=predation;27809975]Will hspa+ work? If so, tmo users who will be paying full price would be better off
Buying from att because its less than tmos full price cost.
Plus wireless tethering would work Because tmo doesn't have imei # of att phone.
Can anyone confim?[/QUOTE]

FYI only T-MO has HSPA +42 version of the S3 for those looking to buy from At&t.

anyone can confirm this?? does the gs3 from tmo works on att HSPA+ and vice versa and if the tmo gs3 works internationally on 3g networks.

All right,unlocked my T999 galaxy s3, put my AT&T micro sim in phone but I get no data. I can make phone calls no problem.Do I have to do anything with the APN settings?
Thank you!!

You need to make an AT&T APN. Also the AT&T version will not get 3G on T-Mobile without at the very least a modem flash.
Sent from my GT-I9300 using Tapatalk 2

O.K. just added a couple ATT apn settings still no data.any other suggestions?
By the way i have a 4g micro sim.Thought Tmobile S3 had ATT hspa+ bands.
Got apn settings from these forums.

Might want to do a lot of research before trying to flash an att ROM on tmo or vice versa. I heard the tmo phones are quad core.

mrhaley30705 said:
Might want to do a lot of research before trying to flash an att ROM on tmo or vice versa. I heard the tmo phones are quad core.
Click to expand...
Click to collapse
They aren't. All US ones are dual core.
Sent from my GT-I9300 using Tapatalk 2

fender22 said:
O.K. just added a couple ATT apn settings still no data.any other suggestions?
By the way i have a 4g micro sim.Thought Tmobile S3 had ATT hspa+ bands.
Got apn settings from these forums.
Click to expand...
Click to collapse
did you flash an AT&T radio? you will probably need to do that.
how did you unlock your phone? did you just buy a code or did you try one of the XDA methods?

dLo GSR said:
did you flash an AT&T radio? you will probably need to do that.
how did you unlock your phone? did you just buy a code or did you try one of the XDA methods?
Click to expand...
Click to collapse
Forgot about that. You need an AT&T baseband.
Sent from my GT-I9300 using Tapatalk 2

joshnichols189 said:
They aren't. All US ones are dual core.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
So they are. Thanks for providing quick verification on something i heard. :thumbup:

joshnichols189 said:
They aren't. All US ones are dual core.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Aaaaah!!
Why when something comes to US it has to be downgraded?

barribow said:
Aaaaah!!
Why when something comes to US it has to be downgraded?
Click to expand...
Click to collapse
It isn't a down grade. Do some reading.
Sent from my GT-I9300 using Tapatalk 2

joshnichols189 said:
It isn't a down grade. Do some reading.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
link?

Are you using your Verizon GN on a different carrier?

Guess not.

Don't think you can even outside of maybe Page Plus.
Sent from my Galaxy Nexus using Tapatalk 2

You can't because CDMA requires the device to be signed to run on the network. GSM doesn't. You can't run a CDMA Verizon device on Sprint or vice versa for this reason.

Thats not really true, but porting a CDMA Gnex is dumb because you lose LTE.

you can use it on Sprint, but Sprint sucks....

I Am Marino said:
Don't think you can even outside of maybe Page Plus.
Click to expand...
Click to collapse
Actually, you can flash it to MetroPCS and Cricket if you wanted to.

EmceeGeek said:
Actually, you can flash it to MetroPCS and Cricket if you wanted to.
Click to expand...
Click to collapse
Knew I was forgetting something.
Sent from my Galaxy Nexus using Tapatalk 2

I'm hoping you fellas will help me out here.

I'm buying an unlocked T-mobile Galaxy s3 from a really nice guy. I'm on AT&T, and would like to A) confirm it will work on HSPA+, and B) I would like to know how to go about setting it up on the Medianet plan.

Thremix said:
I'm buying an unlocked T-mobile Galaxy s3 from a really nice guy. I'm on AT&T, and would like to A) confirm it will work on HSPA+, and B) I would like to know how to go about setting it up on the Medianet plan.
Click to expand...
Click to collapse
Someone may correct me but I don't think HSPA+ will work on ATT. They use different frequencies. If you had the international SGS3, HSPA+ would work on ATT.

OK thank you, I'll pass on the GS3, I'll just keep my iphone

It works. T-Mobile s3 has the frequencies needed. My s3 is T-Mobile unlocked and using it with at&t.
Sent from my SGH-T999 using Tapatalk 2

mustk1ll20 said:
It works. T-Mobile s3 has the frequencies needed. My s3 is T-Mobile unlocked and using it with at&t.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
+1. The T999 supports 850/1700/1900/2100 for HSPA+. Therefore it will work on Atts H+. I use both T-Mobile and straight talk on my t999.
Sent from my SGH-T999 using Tapatalk 2

babymatteo said:
+1. The T999 supports 850/1700/1900/2100 for HSPA+. Therefore it will work on Atts H+. I use both T-Mobile and straight talk on my t999.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
awesome! the phone comes unlocked already, any idea on how to get it going on medianet?

No one?

Thremix said:
No one?
Click to expand...
Click to collapse
I assume that is something to do with at&t if so, you would have a better chance asking there.

T-Mobile / Simple Mobile / Galaxy S3 ?

Until recently I have been with Sprint. And I am located in South Florida.
I am considering going with Simple Mobile as I'm told that T-Mobile has one of the best data speeds in this area. And I want to get a Galaxy S3 as the phone to use with this service.
Can anyone here advise as to whether this would work with Simple Mobile (I called them but they won't say anything only that they don't don't support it - meaning they don't sell it so don't bother them), at what speeds?
I also assume that I must get the T-Mobile version of this phone. That seems quite difficult unless I want to pay a big premium to T-Mobile, who charges much more than say AT&T for their version. So if anyone has any suggestions where I can get one (I would prefer a store, not eBay)?
Thanks

try the xda marketplace
edit: nvm just saw you dont have enough posts.

I read that the Sprint variant of the S3 would work on T-Mobile. You just have to unlock the phone I believe.
Sent from my S3

I remember negri sells the phone for $599 unlocked. That's the cheapest I've seen for the TMobile version. It's not cheaper by much but it's unlocked and you may save on taxes.
http://negrielectronics.com/catalogsearch/result/?q=t999#.UDfVdr3n_Fo
Sent from my SPH-L710 using Tapatalk 2

AttachedSilver said:
I read that the Sprint variant of the S3 would work on T-Mobile. You just have to unlock the phone I believe.
Sent from my S3
Click to expand...
Click to collapse
Sprint is cdma and T-Mobile is GSM. How are you going to stick a sim card in that sprint phone?
Sent from my SPH-D710 using xda app-developers app

My wife is using it on Simple Mobile. It works great.

Simple Mobile is a Mvno of t-mobile so you don't need to have an unlocked T999. Just change the apn. A's far as speeds. I live in Central Florida and I get the same speeds as t-mobile. I recommended. As far as where to buy the phone. I went to t-mobile and paid $599 for it. Haven't really seen it cheaper.
Sent from my SGH-T999 using XDA Premium HD app

brooksyx said:
Sprint is cdma and T-Mobile is GSM. How are you going to stick a sim card in that sprint phone?
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
It's a world phone, my friends HTC Rezound is on Verizon which is CDMA but works on ATT
Sent from my S3

AttachedSilver said:
It's a world phone, my friends HTC Rezound is on Verizon which is CDMA but works on ATT
Sent from my S3
Click to expand...
Click to collapse
The Sprint version does not have the AWS bands that T-Mobile requires.

joshnichols189 said:
The Sprint version does not have the AWS bands that T-Mobile requires.
Click to expand...
Click to collapse
Not to mention the Sprint sim slot is sealed and inaccessible.

AttachedSilver said:
It's a world phone, my friends HTC Rezound is on Verizon which is CDMA but works on ATT
Sent from my S3
Click to expand...
Click to collapse
You didn't answer my question, how are you going to put a sim card in it. The sprint galaxy siii does not have a sim slot...
Sent from my SPH-D710 using xda app-developers app

Also for Data?
Will it work for all the difference data protocols, and 2G, 3G, 4G?
AttachedSilver said:
I read that the Sprint variant of the S3 would work on T-Mobile. You just have to unlock the phone I believe.
Sent from my S3
Click to expand...
Click to collapse

Which phone is she using?
What plan (40, 50, 60) does she have? What data speeds is she getting?
tengtengvn said:
My wife is using it on Simple Mobile. It works great.
Click to expand...
Click to collapse

sun365 said:
Will it work for all the difference data protocols, and 2G, 3G, 4G?
Click to expand...
Click to collapse
No. It doesn't have the AWS bands that T-Mobile requires. And they don't have "4G".
Sent from my SGH-T999

brooksyx said:
You didn't answer my question, how are you going to put a sim card in it. The sprint galaxy siii does not have a sim slot...
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
It does have a sim slot but it's not user accessible.
It's hidden behind the plastic under the battery.
Sprint has taken this approach with all there LTE devices.
The only exception may be the Photon Q since it's touted as being a global device.

five40 said:
It does have a sim slot but it's not user accessible.
It's hidden behind the plastic under the battery.
Sprint has taken this approach with all there LTE devices.
The only exception may be the Photon Q since it's touted as being a global device.
Click to expand...
Click to collapse
There is no sim slot. There is an embedded lte chip in there but no slot.
Sent from my SPH-L710 using Tapatalk 2

tengtengvn said:
My wife is using it on Simple Mobile. It works great.
Click to expand...
Click to collapse
So she did get 4G from simple mobile or only edge speed?
Also did she get MMS problem? I saw someone open a thread says he have MMS issue. (http://forum.xda-developers.com/showthread.php?t=1791451)

Verizon s3 unlock to Tmobile

I got a free Verizon s3.... I need to know if i can use Tmobile on it?
I read several threads....but no real info.
Any help would be great.
Sent from my SGH-T989 using xda premium

No. Verizon is CDMA TMo is GSM.

alloycowboy said:
I got a free Verizon s3.... I need to know if i can use Tmobile on it?
I read several threads....but no real info.
Any help would be great.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
verizon is cdma tmobile is gsm But:
u can sign up with metroPCS (uses cdma) owned by tmobile till 2015 ....that's when tmo will phase out cdma network.
hope that helps!

Alright....thank you for the help

blackangst said:
No. Verizon is CDMA TMo is GSM.
Click to expand...
Click to collapse
Wrong, You can use Verizon S3 with Tmobile if you unlock the phone. Verizon S3 has Sim Slot. I'm using one right now
check this: http://forum.xda-developers.com/showthread.php?t=2013647
and this: http://forum.xda-developers.com/showthread.php?t=1809314

Originally Posted by blackangst
No. Verizon is CDMA TMo is GSM.
Click to expand...
Click to collapse
Wrong, You can use Verizon S3 with Tmobile if you unlock the phone. Verizon S3 has Sim Slot. I'm using one right now
check this:
Double wrong. Verizon has a different RADIO frequency than AT&T and/or T-Mobile. It is impossible to update/change the radio for a sim on att/tmobile for it to work on Verizon phone. Like said before: Verizon is CDMA (code division network based) AT&T/T-MOBILE is GSM (global system network) now let me Synthesise, IMPOSSIBLE for the simcard to work in Verizon phone with out the appropriate radio for the network!
Sent from my SAMSUNG-SGH-T989 using xda premium
---------- Post added at 08:02 AM ---------- Previous post was at 07:50 AM ----------
porto35 said:
Wrong, You can use Verizon S3 with Tmobile if you unlock the phone. Verizon S3 has Sim Slot. I'm using one right now
check this:
Click to expand...
Click to collapse
Wrong, You can use Verizon S3 with Tmobile if you unlock the phone. Verizon S3 has Sim Slot. I'm using one right now
check this:
Double wrong. Verizon has a different RADIO frequency than AT&T and/or T-Mobile. It is impossible to update/change the radio for a sim on att/tmobile for it to work on Verizon phone. Like said before: Verizon is CDMA (code division network based) AT&T/T-MOBILE is GSM (global system network) now let me Synthesise, IMPOSSIBLE for the simcard to work in Verizon phone with out the appropriate radio for the network!
Sent from my SAMSUNG-SGH-T989 using xda premium
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-T989 using xda premium

The first touch screen BlackBerry made for Verizon works on T-Mobile so why wouldn't this ? Granted the phone sucks and can only get edge, but it worked none the less
Sent from my SGH-T989 using xda app-developers app

Spastic909 said:
The first touch screen BlackBerry made for Verizon works on T-Mobile so why wouldn't this ? Granted the phone sucks and can only get edge, but it worked none the less
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
some of the verizon phones are "world phones" and have both gsm and cdma. all verizon lte phones have a sim card but only some have gsm. I don't know anything about the verizon s3 but you would be better off asking in the verizon s3 forums.

I know what world phones are. Was just stating to the other dude who thinks it completely impossible.
Sent from my SGH-T989 using xda app-developers app

Not impossible. I get 3g on it and that's it. But when i change ROMs i have to redo the whole freaking APN settings again!!!
Too much of a hassle. So i got rid of it.
Sent from my SAMSUNG-SGH-T989 using xda premium

alloycowboy said:
I got a free Verizon s3.... I need to know if i can use Tmobile on it?
Click to expand...
Click to collapse
Yes you can, see this right now you can only get E speed on it. My S3 is actually flashed to Pageplus and I can use it with any GSM carrier here in the US, it's fairly easy to do but like I said you only get "Edge" speed for now. I've use Net10, Simplemobile and StraightTalk, any GSM will work you can also flash to other CDMA like Metro, Cricket or Pageplus.

Maxninja said:
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Click to collapse
you have no idea about Verizon S3. Don't try to be smart my friend. I'm very sure that you don't own any S3 from Verizon. Stop BS about CDMA and GSM radio. I have been used my Verizon S3 for Tmobile for more than 8 months.

porto35 said:
you have no idea about Verizon S3. Don't try to be smart my friend. I'm very sure that you don't own any S3 from Verizon. Stop BS about CDMA and GSM radio. I have been used my Verizon S3 for Tmobile for more than 8 months.
Click to expand...
Click to collapse
See... This is what happens when a ignoramus tries to be smart .. You don't know what you're saying.. It is a proven fact that you can't put a GSM into a NON-gsm phone and expect it to work! (i tried it.. And it failed.. Invalid sim[in a unlocked vzw phone])
Now, this is posted in the wrong thread.
Phone history:
1.T-Mobile Mytouch 3G Fender Ed. - lost
2.T959V - ROOTED#bricked/trying to fix
3.T959 - ROOTED#SlimRom build 5.5 - backup
4.Moto Razor V9 - broken
5. Samsung Intercept - ROOTED#Stock
6.I897 - ROOTED#SlimRom build 3.1- backup/usb port broken-MIA
7.T989 - ROOTED#SlimRom build5.5 - present

yes but havent tried
there are several places saying it is totally possible and ive called verizon trying to see what they would say and the answer i got, at least for out of the country GSM, is that the S3 comes "unlocked already" and you just put in the sim card from whatever out of country carrier you want. apparently that came with the 4.1.2 update to the phone. Now putting with a us carrier might be different but i cant try it because i have my phone flashed to metropcs and i cant just put a metro sim card in it. here a few places i found just by looking on google
http://rootandunlock.blogspot.com/2013/04/rooting-and-unlocking-your-verizon.html
http://androidrays.com/518/change-cdma-verizon-galaxy-s3-to-gsm-handset-by-hack/
http://www.youtube.com/watch?v=tc7PRDPIzHY
and theres a couple more

Maxninja said:
See... This is what happens when a ignoramus tries to be smart .. You don't know what you're saying.. It is a proven fact that you can't put a GSM into a NON-gsm phone and expect it to work! (i tried it.. And it failed.. Invalid sim[in a unlocked vzw phone])
Now, this is posted in the wrong thread.
Phone history:
1.T-Mobile Mytouch 3G Fender Ed. - lost
2.T959V - ROOTED#bricked/trying to fix
3.T959 - ROOTED#SlimRom build 5.5 - backup
4.Moto Razor V9 - broken
5. Samsung Intercept - ROOTED#Stock
6.I897 - ROOTED#SlimRom build 3.1- backup/usb port broken-MIA
7.T989 - ROOTED#SlimRom build5.5 - present
Click to expand...
Click to collapse
U actually can use the Verizon variant s3 on tmobiles network as the s3 is a world phone, now here's where and why most ppl don't, Verizon's network is CDMA as we all know and T-Mobile is a gsm network, so with the s3 being a world phone it can be used on a gsm network but u will never see 4g or even real 3g speeds, Verizon's s3 doesn't have the ability to pick up anything but "E", edge speeds on T-Mobile so is it really worth it? Not in my opinion, if I'm going to blget an s3 I want the full functionality of the devices capabilities, just saying though lol
Sent from my SGH-T989 using xda premium

Si you have any idea how to do that?
Sent from my SCH-I535 using xda premium
---------- Post added at 12:58 AM ---------- Previous post was at 12:56 AM ----------
Metro now had sim cards running off of t-mobiles towers so I don't think it has to be flashed anymore but unlocked
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robcop19 said:
Si you have any idea how to do that?
Sent from my SCH-I535 using xda premium
---------- Post added at 12:58 AM ---------- Previous post was at 12:56 AM ----------
Metro now had sim cards running off of t-mobiles towers so I don't think it has to be flashed anymore but unlocked
Sent from my SCH-I535 using xda premium
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Click to collapse
Well I actually already flashed mine to metro but then for anyone else that would mean you have to figure how to unlock the verizon s3 and move it to the Gsm for metro. And what I want to see is if it'll pick up 4G
Sent from my SCH-I535 using xda premium

robcop19 said:
Well I actually already flashed mine to metro but then for anyone else that would mean you have to figure how to unlock the verizon s3 and move it to the Gsm for metro. And what I want to see is if it'll pick up 4G
Sent from my SCH-I535 using xda premium
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Click to collapse
I can say with some certainty that u will not see 4g using a Verizon variant s3 on T-Mobile network, yes its a world phone and yes u can get it to "work" on T-Mobile but it doesn't have the right kind of internal for gsm 4g network speeds, the most u will see out of it is E or edge, 2g speeds, at least until the towers get updated
Sent from my SGH-T989 using xda premium

3G
soupysoup said:
I can say with some certainty that u will not see 4g using a Verizon variant s3 on T-Mobile network, yes its a world phone and yes u can get it to "work" on T-Mobile but it doesn't have the right kind of internal for gsm 4g network speeds, the most u will see out of it is E or edge, 2g speeds, at least until the towers get updated
Sent from my SGH-T989 using xda premium
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Click to collapse
I dont know why im complaining except for the 4G status but i get full 3G and i have no buffering at all on youtube and its so quick. but you think if the towers get some kind of update then maybe 4g might work one day? because i understand if i dont get t-mobiles 4g but what about metro pcs 4g lte

robcop19 said:
I dont know why im complaining except for the 4G status but i get full 3G and i have no buffering at all on youtube and its so quick. but you think if the towers get some kind of update then maybe 4g might work one day? because i understand if i dont get t-mobiles 4g but what about metro pcs 4g lte
Click to expand...
Click to collapse
I can't say for certainty but as of right now any unlocked world phone from a CDMA based network will only pick up 2g or edge network speeds, it may say 3g or even 4g but believe me unless ur in an area where towers have been remapped u will not see anything above 2g ,maybe base 3g ,only because the radio isn't designed to pick up the gsm frequency, now in the near future cdma will be phased out so u may be able to get 4g in the future but not as of now
Sent from my SGH-T989 using xda premium