Develop Bugs

Flash a T-mobile modem in the SG3 international

Or even flash it in At&T SG3. Samsung said the hardware are the same and have all the frequencies. i believe it might not be advertised this way from the carriers. Just thinking out loud.

Sorry i posted in the wrong section. Admin please move to Q&A
sorry again

Eh, I dont think so. Not at first anyway... after some hackery it might be possible.

The US versions are all the same.
The International version is very different.
It will never work.

I have yet to get 5 bars on my SGS3. Kinda odd.

Not a good idea as someone already stated they're different. I did that once by accident with the original galaxy s. Flashed the canadian firmware for the US version of the phone and ended up bricking it. Not even a jig bought it back to life.

It should work with the at&t and t-mobile sgs3 just like with the skyrocket and t-mobile's sgs2

htc fan89 said:
It should work with the at&t and t-mobile sgs3 just like with the skyrocket and t-mobile's sgs2
Click to expand...
Click to collapse
Are you sure? Can you reference someone or someplace that has had success with this?

}{Alienz}{ said:
Are you sure? Can you reference someone or someplace that has had success with this?
Click to expand...
Click to collapse
The Skyrocket forums.. the AT&T Note also works because it also has the same SoC. The international version will never work with AWS though.
Sent from my GT-I9300 using Tapatalk 2

... if this is true, I'm getting an AT&T S3 at retail and then flash the radio to T-Mobile.
Chances are I won't resist temptation and get the t-mobile one anyway

Lekz said:
... if this is true, I'm getting an AT&T S3 at retail and then flash the radio to T-Mobile.
Chances are I won't resist temptation and get the t-mobile one anyway
Click to expand...
Click to collapse
It hasn't been tested yet on the S3. And while it works on the Note, it is far from optimal. I have not read since the early stages but it would freeze and get awful battery life on T-Mobile.
Sent from my GT-I9300 using Tapatalk 2

The US [GSM] models, ok. The international model, 100% no.
And as I understood, the T-Mobile version is pentaband out of the box (it will get AT&T 3G/4G 1900 MHz) because T-Mobile is moving to that frequency. So if anything, get the T-Mobile one and use it on AT&T if you don't care about LTE.

Product F(RED) said:
The US [GSM] models, ok. The international model, 100% no.
And as I understood, the T-Mobile version is pentaband out of the box (it will get AT&T 3G/4G 1900 MHz) because T-Mobile is moving to that frequency. So if anything, get the T-Mobile one and use it on AT&T if you don't care about LTE.
Click to expand...
Click to collapse
what about the other way around, since at&t version is cheaper to get than t-mobile? My skyrocket had good battery life when I flashed t-mobile radio on to it...not sure about the note

htc fan89 said:
what about the other way around, since at&t version is cheaper to get than t-mobile? My skyrocket had good battery life when I flashed t-mobile radio on to it...not sure about the note
Click to expand...
Click to collapse
The Note had abysmal battery life from what I read. Just wait for someone to do it (they will) so you don't have to possibly return whichever one you buy.

joshnichols189 said:
It hasn't been tested yet on the S3. And while it works on the Note, it is far from optimal. I have not read since the early stages but it would freeze and get awful battery life on T-Mobile.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Well the At&T Galaxy Note is what inspired me to think it might be doable!! The At&T Note i have is working fine with Simple Mobile and picking up 4g all the way. the battery sucks anyways even with the At&T modem. Also, you guys should note that stationed in Kuwait and im using the At&T Note with T-mobile modem overseas and still working great. Yes i have 3G as they dont have 4G here. they funny thing is that i still shows 4G and run about 19Mbps in most places.
I can get the international SGIII in Kuwait for $250 16G unlocked (NICE RIGHT?) but when im home i use the Simple mobile network(T-mobile).
you can call it greed but i want to have 2GB RAM, LTE, T-mobile 4G and the ablity to use every network in the world
I hope someone can make this happen

The reason it worked with the AT&T Note is because the T-Mobile S2 used the same SoC (Snapdragons S3). The US Galaxy S3's have Snapdragon S4's, the International has an Exynos 4412. The SoC's (CPU, RAM, Radios, DAC) are COMPLETELY different. It will NOT work. It's not software magic that got the Note to work. It's the fact that it supported the 1700 MHz frequency. The Exynos SoC's radio doesn't. You'll end up bricking the phone and requiring a JTAG.
Sent from my GT-I9300 using XDA Premium HD app

Product F(RED) said:
The reason it worked with the AT&T Note is because the T-Mobile S2 used the same SoC (Snapdragons S3). The US Galaxy S3's have Snapdragon S4's, the International has an Exynos 4412. The SoC's (CPU, RAM, Radios, DAC) are COMPLETELY different. It will NOT work. It's not software magic that got the Note to work. It's the fact that it supported the 1700 MHz frequency. The Exynos SoC's radio doesn't. You'll end up bricking the phone and requiring a JTAG.
Sent from my GT-I9300 using XDA Premium HD app
Click to expand...
Click to collapse
No one listens to me :'( thanks for the backup Fred. Haha
Sent from my GT-I9300 using Tapatalk 2

To be fair, I never meant the International S3
Sent from my HTC Sensation 4G using Tapatalk 2

Product F(RED) said:
The US [GSM] models, ok. The international model, 100% no.
And as I understood, the T-Mobile version is pentaband out of the box (it will get AT&T 3G/4G 1900 MHz) because T-Mobile is moving to that frequency. So if anything, get the T-Mobile one and use it on AT&T if you don't care about LTE.
Click to expand...
Click to collapse
Can you please confirm this, if I get the T-mobile version, and get it unlocked and use my existing AT&T sim on it, it will get 3G/4G speeds?. Would the international version also not give the same?. 4G speeds with AT&T?.
Thanks.

RizSher said:
Can you please confirm this, if I get the T-mobile version, and get it unlocked and use my existing AT&T sim on it, it will get 3G/4G speeds?. Would the international version also not give the same?. 4G speeds with AT&T?.
Thanks.
Click to expand...
Click to collapse
I'm using the i9300 (International) on Straight Talk AT&T, which runs on AT&T's base network, and I get full HSPA+ (of course, no LTE). The i9300 runs on AT&T's bands, so if you used it on T-Mobile you'd only get EDGE (for now, because they're moving their network onto the same frequency as AT&T). If the T-Mobile version is indeed pentaband as I suspect, then unlocking it and using it on AT&T will give you the same data speeds as using the international version on AT&T.

[Q] Are There Different S3 versions for ATT and TMobile?

I found out quite late that Tmobile is limited to 2G data on IPhones.. (or atleast IPhone 4S). I use TMobile prepaid 3$/day package as my usage is limited and sporadic.
Considering the S3, can anyone please tell me if Samsung has released distinct versions of the S3 for the two networks, or the same model covers both?.
Thanks.

I believe att has the lte version. Yes different phones.
Sent from my SGH-T999 using xda premium

Thanks Mr?Bmg
I suppose, the question I really wanted to ask was, is one network's version more of an international phone than the other with regards to data?... i.e if I were to take the phone to a)UK/Europe, b) Pakistan,
Would both phone be able to get atleast 3G, or, would the TMobile version still be restricted to EDGE?.
Thanks.
Riz

RizSher said:
Thanks Mr?Bmg
I suppose, the question I really wanted to ask was, is one network's version more of an international phone than the other with regards to data?... i.e if I were to take the phone to a)UK/Europe, b) Pakistan,
Would both phone be able to get atleast 3G, or, would the TMobile version still be restricted to EDGE?.
Thanks.
Riz
Click to expand...
Click to collapse
There are different versions of the S3 for both the ATT and TMobile. On the S2, the difference was in the apearance, where the ATT was a little more square like, and TMobile had rounded edges. In the S3 though, the only difference is the name printed on the back (where it has either the Tmobile or the ATT logo). As for the mobile network support, I think that only the radio is different. Even now, you are not limited to 2g by your phone, but rather whatever TMobile decided to give you. Both phones will get atleast 3g. I know that TMobile version does not have LTE support, but im not sure about the ATT version.

RizSher said:
Thanks Mr?Bmg
I suppose, the question I really wanted to ask was, is one network's version more of an international phone than the other with regards to data?... i.e if I were to take the phone to a)UK/Europe, b) Pakistan,
Would both phone be able to get atleast 3G, or, would the TMobile version still be restricted to EDGE?.
Thanks.
Riz
Click to expand...
Click to collapse
If you bring an AT&T phone to T-Mobile, you will not get 4G.
You can best 3G if your AT&T Phone has the 1900 range, you can get 3G on T-Mobile's service. Not sure how well it will be since it's only picking 1900 without others.

If you unlock your T-Mobile S3 you should be able to get 3G/HSPA+ on AT&T. The T-Mobile S3 is a pentaband device.

RizSher said:
I found out quite late that Tmobile is limited to 2G data on IPhones.. (or atleast IPhone 4S). I use TMobile prepaid 3$/day package as my usage is limited and sporadic.
Considering the S3, can anyone please tell me if Samsung has released distinct versions of the S3 for the two networks, or the same model covers both?.
Thanks.
Click to expand...
Click to collapse
If you are using an iPhone you might as well do the $2 a day since the $3 will only affect you if your phone gets 4G. They will be exactly the same performance on the $2 since it will just be on unlimited EDGE.

rmanne said:
There are different versions of the S3 for both the ATT and TMobile. On the S2, the difference was in the apearance, where the ATT was a little more square like, and TMobile had rounded edges. In the S3 though, the only difference is the name printed on the back (where it has either the Tmobile or the ATT logo). As for the mobile network support, I think that only the radio is different. Even now, you are not limited to 2g by your phone, but rather whatever TMobile decided to give you. Both phones will get atleast 3g. I know that TMobile version does not have LTE support, but im not sure about the ATT version.
Click to expand...
Click to collapse
The AT&T version does not get 3G on T-Mobile save for a few sporadic locations across the states. And yes, it also has LTE.

joshnichols189 said:
The AT&T version does not get 3G on T-Mobile save for a few sporadic locations across the states. And yes, it also has LTE.
Click to expand...
Click to collapse
I also want to know about this

suhailstar said:
I also want to know about this
Click to expand...
Click to collapse
Know about what?
Sent from my SGH-T999

Sim Unlocked TMO S4 - Frequencies Question

I have a T-Mo Galaxy S4 that was SIM unlocked through unlockerDotnet.
I've heard that the T-Mo S4 is better than AT&T for a variety of reasons, but more importantly that it picks up all of T-Mobiles HSPA+ along with AT&T's network. So in theory, having it sim unlocked, I could fully utilize t-mobile's service and at&t's service to their full potential. Can anyone confirm this?
Reason I ask was I was speaking with a TMO rep once and he said the international unlocked version wouldn't pick up on the full spectrum of TMO frequencies, but it should be fine with AT&T. Ideally I want to get into a situation where I have the option to jump between the two through their full spectrum, or any mvno's that use their towers as well.
Thanks for the clarification! :laugh:
Details and specifics appreciated!

You can enable tmo AWS bands on AT&T S4. 2 phones are the same, basically the tmo version has the extra bands enable out of the box.

tengtengvn said:
You can enable tmo AWS bands on AT&T S4. 2 phones are the same, basically the tmo version has the extra bands enable out of the box.
Click to expand...
Click to collapse
Thanks for the heads up :good:
So there wouldn't be any disadvantage to running the sim unlocked TMO S4 on ATT? I'd still pick up on all their 3g/4g/lte frequencies?
Much appreciated my friend

It will work its full potential on AT&T network if that what you want it to do.

tengtengvn said:
It will work its full potential on AT&T network if that what you want it to do.
Click to expand...
Click to collapse
Wait a minute... The ATT version has the tmobile bands too? I thought it was missing two of them.
Sent from my HTC One using xda app-developers app

http://galaxys4root.com/galaxy-s4-t...aws-bands-on-att-galaxy-s4-sgh-i337sgh-i337m/

tengtengvn said:
http://galaxys4root.com/galaxy-s4-t...aws-bands-on-att-galaxy-s4-sgh-i337sgh-i337m/
Click to expand...
Click to collapse
I got another reply on a different forum that said
"T-Mobile's phone will work on both AT&T and T-Mobile however im not sure if the 4g LTE will work on AT&T's Network but either way you will only be able to use one or the other at any one time."
So, just to clarify, or rephrase rather, will 4G LTE work on ATT's network with the sim-unlocked TMO S4, or would it be beneficial to go with the ATT S4 and open up the TMO bands?
Sorry to beat the dead horse, just want to try and verify HSPA+ and both Tmo LTE and Att LTE will work with my setup, or if I should switch to ATT or International Unlocked version.
Again, many thanks for clearing this up!

Please read forum rules before posting
Questions and help issues go in Q&A and Help sections
Thread moved
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kennyglass123 said:
Please read forum rules before posting
Questions and help issues go in Q&A and Help sections
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator
Click to expand...
Click to collapse
K. Can anyone help me out with that last question that knows LTE tech fairly well? I read a bit about frequencies here and from what I can tell it seems like the LTE frequencies are 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz pending which geographic market you are in, but I'm not sure if there's anything else hidden in regards to carriers have specific LTE frequencies, and if so if any that a TMO sim unlocked S4 doesn't have.
In the end, i'm 90% going to be on TMO or a MVNO, but on the slight chance (or if i'm working around the country in a very rural area) I may want to switch to ATT and possibly their new prepaid service they're going to announce. Anyways, thanks again

My unlocked TMO S4 works perfectly on ATT LTE, doing it right now and have been for the last few weeks. That's why I bought it also was to hop between carriers.
While you can get the ATT S4 to work with TMO it's more difficult and not ready to go out of the box. I tried that and ended up just returning the ATT one.
Sent from my SGH-M919 using xda premium

aranock said:
In the end, i'm 90% going to be on TMO or a MVNO, but on the slight chance (or if i'm working around the country in a very rural area) I may want to switch to ATT and possibly their new prepaid service they're going to announce. Anyways, thanks again
Click to expand...
Click to collapse
T-mobile just dropped the price of their S4. There's no reason to get the ATT one but in case you get one and want an easy way to unlock the extra bands, follow this thread: http://forum.xda-developers.com/showthread.php?t=2324667

kevroc said:
My unlocked TMO S4 works perfectly on ATT LTE, doing it right now and have been for the last few weeks. That's why I bought it also was to hop between carriers.
While you can get the ATT S4 to work with TMO it's more difficult and not ready to go out of the box. I tried that and ended up just returning the ATT one.
Sent from my SGH-M919 using xda premium
Click to expand...
Click to collapse
I have a T-Mobile variant s4 unlocked using it on AT&T network and just did my first speed test and......was very disappointed!
Sent from my SGH-M919 using xda premium

[Q] I have a T-Mobile S4 that refuses to select LTE for other carriers

Hey Y'all,
I've seen the other threads and I know that LTE works for AT&T but for the life of me, I cannot get it to select LTE
at all. I've tried the connections-->network mode menu and whenever I select LTE+WCDMA+GSM it always reverts
back to WCDMA+GSM the moment i back out of the menu. Also when using the *#2263# and I try and select it
via that way, I get bars but no data. Can anyone help me shed some light on this?
Is there another way to prioritize LTE? Do i need to flash a new kernel or modem?
Thanks guys!

Is lt available in your area?

mgbotoe said:
Is lt available in your area?
Click to expand...
Click to collapse
Yea that's whats bugging me. I put the AT&T sim back into my GN II and it gets LTE easy. I'm still within the return period
I just dont know if I'm missing a step or if the phone is defective. But it gets T-Mobile LTE ( in what few places get it
where I'm at ). So I don't know

Did you flash the att radio?
Sent from my SGH-M919 using Tapatalk 2

elesbb said:
Did you flash the att radio?
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
No I did not. I just did the unlock method that was posted here. So forgive the noob question, but I would have to flash
the AT&T radio to get LTE? Or is this just a troubleshooting method you want me to try? I just thought I wouldn't have
to flash the AT&T radio since it supported the bands Out-the-box.

Infornography said:
No I did not. I just did the unlock method that was posted here. So forgive the noob question, but I would have to flash
the AT&T radio to get LTE? Or is this just a troubleshooting method you want me to try? I just thought I wouldn't have
to flash the AT&T radio since it supported the bands Out-the-box.
Click to expand...
Click to collapse
Technically, you shouldn't have to. It supports 700 MHz LTE out of the box. The T-Mobile S4 is the "best" version because it supports both AT&T and T-Mobile bands out of the box. The AT&T S4 supports AT&T and T-Mobile LTE out of the box, but not T-Mobile HSPA+ (AWS) without a mod.

Product F(RED) said:
Technically, you shouldn't have to. It supports 700 MHz LTE out of the box. The T-Mobile S4 is the "best" version because it supports both AT&T and T-Mobile bands out of the box. The AT&T S4 supports AT&T and T-Mobile LTE out of the box, but not T-Mobile HSPA+ (AWS) without a mod.
Click to expand...
Click to collapse
Yes but without the proper radio. How's it supposed to know what to connect to
Sent from my SGH-M919 using Tapatalk 2

Product F(RED) said:
Technically, you shouldn't have to. It supports 700 MHz LTE out of the box. The T-Mobile S4 is the "best" version because it supports both AT&T and T-Mobile bands out of the box. The AT&T S4 supports AT&T and T-Mobile LTE out of the box, but not T-Mobile HSPA+ (AWS) without a mod.
Click to expand...
Click to collapse
****. That's what I thought. Oh well. I'll do an exchange then at T-mobile. Hopefully it's just this phone. Thanks guys.

Infornography said:
No I did not. I just did the unlock method that was posted here. So forgive the noob question, but I would have to flash
the AT&T radio to get LTE? Or is this just a troubleshooting method you want me to try? I just thought I wouldn't have
to flash the AT&T radio since it supported the bands Out-the-box.
Click to expand...
Click to collapse
It's more along the lines of a troubleshooting method. I believe I read another thread exactly like yours and the solution was to flash att radio. Think of it like a regular am/fm radio. All the hardware is there, but without something to control what stations it can play, how's it gonna know what to play?
Sent from my SGH-M919 using Tapatalk 2

elesbb said:
Yes but without the proper radio. How's it supposed to know what to connect to
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
The network is decided by the SIM card (the entire purpose of GSM). With an AT&T SIM, he should still be able to pick up T-Mobile LTE (AWS LTE is what T-Mobile uses and it's supported in all AT&T devices). My AT&T Note 2 gets T-Mobile LTE, just like my T-Mobile Note 2 does.
Also you can't cross-flash modems because the partition sizes are different; ROMs may be compatible (that's the case with the Note 2) but not the modem. If you flash another device's modem, you'll lose your IMEI (until you flash back the correct one) and your device will bootloop with no signal. From experience.
IGNORE THE GUY TELLING YOU TO FLASH THE AT&T RADIO. YOU'LL BRICK YOUR PHONE.
----------------------------
I just remembered the reason. AT&T won't activate LTE on a non-AT&T phone (on their end on the computer) unless you lie to them and give them the IMEI of an AT&T device. 10000% sure. Fixed this for another guy with a T-Mobile Note 2 trying to use it on AT&T. I have one for you. You go on chat online and tell them you're not getting LTE. They ask you for an IMEI number of an AT&T LTE device (it doesn't have to be your S4's) and then they can activate LTE on their end. I happen to have an IMEI of an in-store HTC One on hand. I'll PM you.
Here's the thread where I helped the guy (last page): http://forum.xda-developers.com/showthread.php?t=1953015

Product F(RED) said:
The network is decided by the SIM card (the entire purpose of GSM). With an AT&T SIM, he should still be able to pick up T-Mobile LTE (AWS LTE is what T-Mobile uses and it's supported in all AT&T devices). My AT&T Note 2 gets T-Mobile LTE, just like my T-Mobile Note 2 does.
Also you can't cross-flash modems because the partition sizes are different; ROMs may be compatible (that's the case with the Note 2) but not the modem. If you flash another device's modem, you'll lose your IMEI (until you flash back the correct one) and your device will bootloop with no signal. From experience.
IGNORE THE GUY TELLING YOU TO FLASH THE AT&T RADIO. YOU'LL BRICK YOUR PHONE.
----------------------------
I just remembered the reason. AT&T won't activate LTE on a non-AT&T phone (on their end on the computer) unless you lie to them and give them the IMEI of an AT&T device. 10000% sure. Fixed this for another guy with a T-Mobile Note 2 trying to use it on AT&T. I have one for you. You go on chat online and tell them you're not getting LTE. They ask you for an IMEI number of an AT&T LTE device (it doesn't have to be your S4's) and then they can activate LTE on their end. I happen to have an IMEI of an in-store HTC One on hand. I'll PM you.
Here's the thread where I helped the guy (last page): http://forum.xda-developers.com/showthread.php?t=1953015
Click to expand...
Click to collapse
Thanks for all the help guys. I already have the GN-II's imei listed on my account however and with the LTE feature code on my account thanks to my buddy who is a rep at the att store. I'm gonna meet him in a few minutes to get another sim card just to give this another shot before i do an exchange at t-mobile seeing as t-mobile is more anal about doing exchanges unless they can physically verify in store what you're *****ing about.

Product F(RED) said:
The network is decided by the SIM card (the entire purpose of GSM). With an AT&T SIM, he should still be able to pick up T-Mobile LTE (AWS LTE is what T-Mobile uses and it's supported in all AT&T devices). My AT&T Note 2 gets T-Mobile LTE, just like my T-Mobile Note 2 does.
Also you can't cross-flash modems because the partition sizes are different; ROMs may be compatible (that's the case with the Note 2) but not the modem. If you flash another device's modem, you'll lose your IMEI (until you flash back the correct one) and your device will bootloop with no signal. From experience.
IGNORE THE GUY TELLING YOU TO FLASH THE AT&T RADIO. YOU'LL BRICK YOUR PHONE.
----------------------------
I just remembered the reason. AT&T won't activate LTE on a non-AT&T phone (on their end on the computer) unless you lie to them and give them the IMEI of an AT&T device. 10000% sure. Fixed this for another guy with a T-Mobile Note 2 trying to use it on AT&T. I have one for you. You go on chat online and tell them you're not getting LTE. They ask you for an IMEI number of an AT&T LTE device (it doesn't have to be your S4's) and then they can activate LTE on their end. I happen to have an IMEI of an in-store HTC One on hand. I'll PM you.
Here's the thread where I helped the guy (last page): http://forum.xda-developers.com/showthread.php?t=1953015
Click to expand...
Click to collapse
You dont need to be so rude first of all. Secondly I never told him to do anything, i simply asked if he flashed the radio and told him it was a troubleshooting method. Meaning, research it before you do it. Just like anything else.
Secondly, others have gotten LTE on their T-Mobile devices without talking to ATT. I already stated i was using the top of my head for diagnosing and never did i tell him to do anything. And since i was going off the top of my head, i remember being able to flash ATT radios to the S3 and S2 of T-Mobile. Also, he has a T-MOBILE DEVICE wanting ATT LTE on it, not the other way around as you are thinking.. Any how, we are two very smart people, we need not argue with one another and telling the op to ignore someone. Thats just flat out rude. Especially since i never said "go flash the ATT radio" i simply asked a question.
To the OP,
Have you set up your APN configurations for ATT?

elesbb said:
You dont need to be so rude first of all. Secondly I never told him to do anything, i simply asked if he flashed the radio and told him it was a troubleshooting method. Meaning, research it before you do it. Just like anything else.
Secondly, others have gotten LTE on their T-Mobile devices without talking to ATT. I already stated i was using the top of my head for diagnosing and never did i tell him to do anything. And since i was going off the top of my head, i remember being able to flash ATT radios to the S3 and S2 of T-Mobile. Also, he has a T-MOBILE DEVICE wanting ATT LTE on it, not the other way around as you are thinking.. Any how, we are two very smart people, we need not argue with one another and telling the op to ignore someone. Thats just flat out rude. Especially since i never said "go flash the ATT radio" i simply asked a question.
To the OP,
Have you set up your APN configurations for ATT?
Click to expand...
Click to collapse
I'm sorry if I came off as rude to you; I was merely trying to tell him to not cross-flash S4 modems as it can brick the device; you have to be careful what you tell people to do if they're coming to you for help. It's not like with the S2. I correctly said he has a T-Mobile device and wants AT&T LTE on it, and as I said before, I've fixed the issue with someone who was in the same situation with a T-Mobile Galaxy Note 2. Like I stated, the phone itself is capable of 700 MHz LTE, which is what AT&T uses. You don't have to flash any modems. It should just work. The fix is above in the last paragraph.
Supported frequencies: http://www.samsung.com/us/mobile/cell-phones/SGH-M919ZWATMB-specs

Sorry guys but I just switched sims and confirmed I have an lte imei and feature on my acct but no dice.

Infornography said:
Sorry guys but I just switched sims and confirmed I have an lte imei and feature on my acct but no dice.
Click to expand...
Click to collapse
Did you try changing APN configurations?

Update: I switched the phone, did the unlock process again and....it still refuses to select LTE. I dunno. At this point I'm at a loss and thinking that it might have something to do with the unlock process itself. I might just do one more exchange and pay for the unlock. Can someone who has AT&T LTE on their S 4 do me a favor and post their APN settings so I can compare just to be absolutely sure it's correct?

I have a T-Mobile s4 that I put my AT&T SIM card in out of my AT&T galaxy note 2 and lte works fine. My issue is, I have random losses of network signal then it just comes back moments later while using the T-Mobile s4 with my AT&T SIM card. I used the unlock method posted in the T-Mobile s4 thread, rooted and flashed the Jedi Rom from the T-Mobile s4 thread. Can anyone shed some light on this issue?
Sent From An Incognegro Galaxy Note 2

Thinking about an S3...

A couple of questions...
I'm thinking about a Galaxy S3, and had a few questions. Looks like there are a bunch of different variants, and I'm not sure of the differences (or if it matters). I'm using simple mobile, and am looking at both the t999 and I747 for AT&T. Any significant differences? Are they both sim unlockable? Anything else I need to be aware of?

nola mike said:
A couple of questions...
I'm thinking about a Galaxy S3, and had a few questions. Looks like there are a bunch of different variants, and I'm not sure of the differences (or if it matters). I'm using simple mobile, and am looking at both the t999 and I747 for AT&T. Any significant differences? Are they both sim unlockable? Anything else I need to be aware of?
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Id suggest the T999L. (Its the only one they sell now). It is compatible on more frequencies/bands than the I747, and if you use it on T-Mobile's networks, it has the potential of being twice as fast as the I747. (I747 I believe can only work on the slower of the two LTE bands used, while the T999L can work on both).
They are both unlockable, but the T999L was patched against our unlock method prior to its release. So you either have to get the code from the carrier who sold it to you, or pay someone $5-10 online to do it for you.

DocHoliday77 said:
Id suggest the T999L. (Its the only one they sell now). It is compatible on more frequencies/bands than the I747, and if you use it on T-Mobile's networks, it has the potential of being twice as fast as the I747. (I747 I believe can only work on the slower of the two LTE bands used, while the T999L can work on both).
They are both unlockable, but the T999L was patched against our unlock method prior to its release. So you either have to get the code from the carrier who sold it to you, or pay someone $5-10 online to do it for you.
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Thanks for the info. Looks like the T999L is going for > $100 more than the other 2 on ebay. Not worth it to me. Also have no idea what speeds simple mobile provides. Any difference between the standard T999 and I747? Are you saying that the I747 has LTE capabilities, but the standard T999 doesn't?

That is correct. The T999L replaced the original T999 when T-Mobile rolled out LTE. None of their devices were LTE capable before, because they couldn't use it.
I will say that the I747 using LTE on T-Mobile s networks, may still not get quite as good as even the old T999, if your in an area that has hspa+42. No idea about simple mobile and what they use though.personally, I think either T999 variant will be superior to the I747 when on T-Mobile networks. There are threads where people are trying to force the I747 to use different frequencies because they want better speeds than what they are getting.
And again, there's just no way to know for sure with SM.
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OK. Doing some more research--lots of info out there. Seems that the difference between the T999 and i747 is that the T999 has support in the 1700 band for HSDPA, while the i747 has LTE capability. It appears that T-Mobile is migrating away from the 1700 band in favor of LTE. This chart includes LTE coverage for a bunch of cities, including pretty much anywhere that I spend significant time.
This article indicates that SM should operate on LTE. So, from this info it looks like the i747 might actually be the better option--although I think that either one will work fast enough for my needs. Basically, most anything faster than EDGE is fine for me.

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nola mike said:
OK. Doing some more research--lots of info out there. Seems that the difference between the T999 and i747 is that the T999 has support in the 1700 band for HSDPA, while the i747 has LTE capability. It appears that T-Mobile is migrating away from the 1700 band in favor of LTE. This chart includes LTE coverage for a bunch of cities, including pretty much anywhere that I spend significant time.
This article indicates that SM should operate on LTE. So, from this info it looks like the i747 might actually be the better option--although I think that either one will work fast enough for my needs. Basically, most anything faster than EDGE is fine for me.
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Just a bit of an update. Got the 747. Getting 9 mbps download speed, which is the same as my wife on the t mobile network (I don't know if hers is lte or not). So, success.