[Q] AT&T radio on T999? - T-Mobile, Samsung Galaxy SIII

I've had many Android devices over the years and flashed a few ROMs in my day. I haven't messed with any of that in quite a long while though.
I've recently switched from all Sprint and all HTC devices to T-Mobile's Galaxy S3. I searched and found the thread about the Team Sonic modem flasher. I tried to read as much as possible but don't think my question is answered there.
Basically.. I get no service at my house and cannot manually select the AT&T network. Everyone with AT&T (including my girlfriend who has the S3) gets service here. Can I flash an AT&T baseband on my T999? I currently have UVLJ4 and get nothing inside and 2G outside whereas all the AT&T people get 4G in my house.
Hope this hasn't been answered before.
Thanks
Sam

Pretty sure that's a no-no.

I think you could flash the modem, but you need to verify they use the exact same partition on both variants. If it flashed to the wrong partition you're likely to hard brick the phone.
An att modem is not going to get you on the att network. I seriously doubt it'd even let you even make a phone call on tmobiles network, though it could happen. I can't figure any real reason (other than pure dumb luck) that another carriers modem would be better than one coded specifically for the network you are on.
Your best bet is to try out all the available modems we already have before thinking about trying another carriers fw.
And search again, but look in the development stickies too! You may find other things you could try. For the moment the modem flasher is quite outdated. I may work on updating it this coming week for those who are still wanting it. We'll see!
Sent from my SGH-T999 using xda app-developers app

Aerowinder said:
Pretty sure that's a no-no.
Click to expand...
Click to collapse
Will this no-no brick my phone or will I just not be able to get any service once flashed and then flash back? I've been trying to scour XDA and the rest of the internet for answers. So far I found this info..
"The modems in the GS3 are SDR or software defined radios. Their frequency TX and RX spectrums can be modified through software. The nice thing about the MSM8960 SOC board is that the radios can be programmed to virtually any current GSM, HSPA or LTE frequency in use in the United States today"
If this is true, I should just be able to flash an AT&T baseband, correct? Then again, I read that the T999 doesn't have the LTE compatibility that every other S3 has. Is this software or hardware defined?

Its a hw limitation.
Call tmobile and let them know the situation. Since you're new to their network I doubt they'd do it but I've heard of them providing a cell repeater to put in your home. Worst they'll say is no!
Sent from my SGH-T999 using xda app-developers app

DocHoliday77 said:
I think you could flash the modem, but you need to verify they use the exact same partition on both variants. If it flashed to the wrong partition you're likely to hard brick the phone.
An att modem is not going to get you on the att network. I seriously doubt it'd even let you even make a phone call on tmobiles network, though it could happen. I can't figure any real reason (other than pure dumb luck) that another carriers modem would be better than one coded specifically for the network you are on.
Your best bet is to try out all the available modems we already have before thinking about trying another carriers fw.
And search again, but look in the development stickies too! You may find other things you could try. For the moment the modem flasher is quite outdated. I may work on updating it this coming week for those who are still wanting it. We'll see!
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
We replied at the same times and I did not see this until I had already posted. Thank you. I guess I will try previous T-Mobile modems and see if one happens to be better for me. All I want is to roam but the phone won't let me choose the AT&T network even though it shows up in the network search. Customer service told me you are unable to roam as long as a T-Mobile network is available at your location.
I do not want to risk bricking so I will stay away from trying the AT&T modem as I am not familiar with this phone or any flashing that has come about in the past 2-3 years.

Related

T-Mobile and AT&T Note 2 cross-compatibility

After a pretty serious amount of searching, I still haven't been able to find a straightforward explanation of what works on which Note 2 on which network as far as 3G/4G service goes. (There was only one that came close, and it still didn't seem to actually be complete.) While the consensus seems to be that the T-Mo phone is the most flexible, what I've been able to cobble together is that the answer is much closer to "depends on what you want to use it for." (Duh, right?) So here's what I understand so far -- please feel free to correct me if I have any of this wrong, and I'll update (or if you think carriers/devices should be added to the list, comment with sources and I'll add on the info):
----
T-Mo T889 (stock unlocked): up to 42 MBps DC-HSPA+ on T-Mobile network (1900MHz); up to HSPA on AT&T network (trying to verify)
AT&T i317 (stock, unlocked): LTE on 700MHz on AT&T network (and future AWS when AT&T gets around to deploying); EDGE on T-Mobile network
T889 with T-Mo LTE unlock (est. Spring 2013): may possibly also enable LTE on AT&T network.
T889 with flashed AT&T radio (or NV partition edit): unknown -- no success to date. Hypothesized that it may enable LTE on AT&T network.
i317 with flashed T889 radio (or NV partition edit): loses AT&T LTE capability; gains HSPA+ (non-DC) on T-Mobile network (DC yet to be verified?)
No idea as to what would happen if/when an i317 can be flashed with a post-Spring 2013 T-Mo radio.
----
So the conclusions I seem to draw from this are:
If you want guaranteed highest speeds out of either service today, and some possibility of T-Mo LTE support in the future, get the AT&T phone and get used to playing around with radio swaps.
If you want the guaranteed highest speed out of T-Mo in a few months (and now, obviously), and some possibility of getting the highest speed out of AT&T (aka LTE) whenever xda-developers' ingenuity figures it out, get the T-Mo phone.
How does this sound to you guys?
Bewn looking into the same thing looks as the t889 should somehow be able to get lte on att but still cant find how
Sent from my SGH-T889 using xda app-developers app
slinkygn said:
After a pretty serious amount of searching, I still haven't been able to find a straightforward explanation of what works on which Note 2 on which network as far as 3G/4G service goes. (There was only one that came close, and it still didn't seem to actually be complete.) While the consensus seems to be that the T-Mo phone is the most flexible, what I've been able to cobble together is that the answer is much closer to "depends on what you want to use it for." (Duh, right?) So here's what I understand so far -- please feel free to correct me if I have any of this wrong, and I'll update (or if you think carriers/devices should be added to the list, comment with sources and I'll add on the info):
----
T-Mo T889 (stock unlocked): up to 42 MBps DC-HSPA+ on T-Mobile network (1900MHz); up to HSPA on AT&T network (trying to verify)
AT&T i317 (stock, unlocked): LTE on 700MHz on AT&T network (and future AWS when AT&T gets around to deploying); EDGE on T-Mobile network
T889 with T-Mo LTE unlock (est. Spring 2013): may possibly also enable LTE on AT&T network.
T889 with flashed AT&T radio: unknown -- no success to date. Hypothesized that it may enable LTE on AT&T network.
i317 with flashed T889 radio: loses AT&T LTE capability; gains HSPA+ (non-DC) on T-Mobile network (DC yet to be verified?)
No idea as to what would happen if/when an i317 can be flashed with a post-Spring 2013 T-Mo radio.
----
So the conclusions I seem to draw from this are:
If you want guaranteed highest speeds out of either service today, and some possibility of T-Mo LTE support in the future, get the AT&T phone and get used to playing around with radio swaps.
If you want the guaranteed highest speed out of T-Mo in a few months (and now, obviously), and some possibility of getting the highest speed out of AT&T (aka LTE) whenever xda-developers' ingenuity figures it out, get the T-Mo phone.
How does this sound to you guys?
Click to expand...
Click to collapse
Short answer, AT&T Note 2 can get full speed HSPA+ on T-Mobile and LTE on AT&T... I currently have it that way... You need to activate AWS bands on NV partition... I also have the T889 and the T889 can do the same... Remember what I have been telling since day 1... They are both the same phone... Just with different signals pre activated by their respective carriers...
Your search was not too serious, lol
http://forum.xda-developers.com/showthread.php?t=2068041
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
As I understand it the note 2 is the first phone to have all the different model have the same physical design and the software is very close to the same as well. I beleive that there are two internatinal ones the gsm and lte. All the us versions are based off the lte one so they are all very similar. I think we even have a few roms in the dev section now that are based off sprints rom. I could be wrong though. I was a little confused at first because usually on tmo our phone would be based off the gsm interntinal but not this time.
I gotta say I am really happy with samsung. And I am impressed with what they have accomplished with this phone and the sgs3. They told the carriers to go to hell and did it their way this time. I think they were able to do it because android is like 60% of the worlds cell phone market and samsung is like 75% of android sales. I am sure the numbers are off but I remember reading about that last year. Sorry to go off topic a little bit.
TEKHD said:
Short answer, AT&T Note 2 can get full speed HSPA+ on T-Mobile and LTE on AT&T... I currently have it that way... You need to activate AWS bands on NV partition... I also have the T889 and the T889 can do the same... Remember what I have been telling since day 1... They are both the same phone... Just with different signals pre activated by their respective carriers...
Your search was not too serious, lol
http://forum.xda-developers.com/showthread.php?t=2068041
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
Click to expand...
Click to collapse
You've done this with the T889? Sounded like you haven't yet from the linked thread.
Keep us up to date on exact steps and success here in the T mobile forum section please.
Sent from my SGH-T889 using Tapatalk 2
distortedloop said:
You've done this with the T889? Sounded like you haven't yet from the linked thread.
Keep us up to date on exact steps and success here in the T mobile forum section please.
Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
What steps ? It's for the AT&T version......use the search feature dude.
KillaHurtz said:
What steps ? It's for the AT&T version......use the search feature dude.
Click to expand...
Click to collapse
Uh, that's his point. And mine, for that matter. AT&T only so far - meaning my OP is currently correct. Nobody has done it on T-Mo (at least that has reported it here). "Hardware is the same," yeah, we all know that, but we also know the software isn't, so it's a matter of what we've actually tried and succeeded with and have confirmation of.
When somebody actually reports a success with T-Mo they can confirm, I'll update.
TEKHD said:
Short answer, AT&T Note 2 can get full speed HSPA+ on T-Mobile and LTE on AT&T... I currently have it that way... You need to activate AWS bands on NV partition... I also have the T889 and the T889 can do the same... Remember what I have been telling since day 1... They are both the same phone... Just with different signals pre activated by their respective carriers...
Your search was not too serious, lol
http://forum.xda-developers.com/showthread.php?t=2068041
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
Click to expand...
Click to collapse
Sorry, poor assumption on your part. I found that. Did you read past the first post? First post says DC works (which was an edit, apparently yesterday) but post 3 says it only indicates DC, no actual speed bump to DC or 42 speeds. Lots of failures on that thread too. So I listed what worked for the OP. If you'd like to confirm dual-5MHz operation (which you didn't explicitly when you posted your success in that post), maybe some screenshots of the speed change if you have them, that should be fine and I'll edit.
slinkygn said:
Sorry, poor assumption on your part. I found that. Did you read past the first post? First post says DC works (which was an edit, apparently yesterday) but post 3 says it only indicates DC, no actual speed bump to DC or 42 speeds. Lots of failures on that thread too. So I listed what worked for the OP. If you'd like to confirm dual-5MHz operation (which you didn't explicitly when you posted your success in that post), maybe some screenshots of the speed change if you have them, that should be fine and I'll edit.
Click to expand...
Click to collapse
Plain and easy... Follow sjravi's post... Restore T889 NV backup to I317 or viceversa in your case... And voila! LTE enabled on T889...
OP Updated... Even easier...
http://forum.xda-developers.com/showthread.php?t=2068041
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
TEKHD said:
Plain and easy... Follow sjravi's post... Restore T889 NV backup to I317 or viceversa in your case... And voila! LTE enabled on T889...
OP Updated... Even easier...
http://forum.xda-developers.com/showthread.php?t=2068041
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
Click to expand...
Click to collapse
Right, like I said, as soon as someone's actually done it successfully I'll update.
I can add the NV method to the radio method, I suppose, since both seem to work on AT&T.
KillaHurtz said:
What steps ? It's for the AT&T version......use the search feature dude.
Click to expand...
Click to collapse
Posts like yours aren't much better than trolling. What did it add to the conversation? Search for what?
If you'd actually searched and read the numerous threads across both the i317 and T889 forums, including both the General and Q&A sections, like I have, you'd see multiple claims of it works, or it doesn't work, and varying methods described with people saying they work and don't work. TEKHD has bounced back and forth multiple times on this, along with a few others.
I was just asking for clarification that this was done on a T889 or not, since TEKHD said in the post I was replying to that it does, but in the thread he linked he said it didn't.
This is a T889 forum, isn't it? What do the users of the T889 care about an i317 hack unless the same hack will work for us?
LTE on T889 Phone
Searched and found conflicting repoerts. Is it possible to get the LTE working on AT&T using the Tmobile T889 model of the note 2?
It is thought so, but no one's done it yet.
slinkygn said:
It is thought so, but no one's done it yet.
Click to expand...
Click to collapse
Ah ok... so i just got ATT today and am using it on my tmobile note 2. DO I need to do anything at all to be getting the best speeds or is it getting the fastest it can right now until someone gets LTE working>?
I hope you guys can help me, I'm frustrated already, I bought an AT&T SAMSUNG-SGH-I317 and also purchased an unlock code, phone was working just fine with 4g on AT&T ( Tested ) but after unlocking I just don't get service when I use a T Mobile or Simple Mobile SIM.
On the About Phone -> Status I do get "Network: T-Mobile/Simple Mobile" ( Depending on the SIM I use ), but I don't even get EDGE, I cant make calls, I get the annoying emergency calls only, its making me crazy. Is there a way to fix this issue?
( I already added the APN settings, but im sure I don't need that to make calls, or get EDGE, I don't know what else to do to fix this ).
Thanks
maybe try factory reset? Possibly flash a different modem as well.
papabear said:
maybe try factory reset? Possibly flash a different modem as well.
Click to expand...
Click to collapse
Factory reset would do nothing, the phone connects to AT&T with no problems, 4G and everything, but not even EDGE on T Mobile.
You already have a thread asking that question. .alot of people get mad when you clutter the forums.
Sent from my SGH-T889 using xda appdevelopers app
HELP so confused =[
I have a TMobile Note 2 N-7100, its now unlocked to use with my AT&T sim. it shows that i have 4G speeds, i am searching the threads and getting mixed messages about enabling LTE. i came across this http://forum.xda-developers.com/showthread.php?t=2068041 but it was non-specific about working on At&t, even though if it works which i have not yet confirmed is there another way to enable it without running the risk of "bricking" my phone?
tlee2189 said:
I have a TMobile Note 2 N-7100, its now unlocked to use with my AT&T sim. it shows that i have 4G speeds, i am searching the threads and getting mixed messages about enabling LTE. i came across this http://forum.xda-developers.com/showthread.php?t=2068041 but it was non-specific about working on At&t, even though if it works which i have not yet confirmed is there another way to enable it without running the risk of "bricking" my phone?
Click to expand...
Click to collapse
Im confused... do you have a T-mobile Note 2? or a N7100? I beleieve the N7100 is the AWS International one, the Tmobile Note 2 is T889... or you could have an N7100 ROM flashed on a T889 (which existed in order to get 4.1.2 before the Tmo release).

[Q] Sprint SGS3 with Verizon ROM possible?

I've searched for this quite a bit, but haven't seen anything definitive.
I have an S3 from Sprint that I want to use on Page Plus. I've got it working on page plus, but not all of it.
I'd like to get rid of all the Sprint specific software to go to something either verizon or more generic, that won't
be trying to access my "sprint account" all the time, (which doesn't exist)
Is this possible?
I'm not familiar with too familiar with flashing phones myself, but i've read about them
Does PagePlus work on Verizons network then?
If it does, you should be able to flash the rom fine, the only difference between roms made for each phone are the vendor files (theres actually a project in place right now to make a rom that will work for all carrier-specific S3s)
I would strongly suggest making a backup just in case though, and the usual disclaimer: i take no responsibility for your actions, but i would be more than glad to help if something goes wrong
Also if you root, you can install a clean rom that will have all the bloat remove, that way you're not just replacing it with other bloat lol
Good luck :good:
CNexus said:
I'm not familiar with too familiar with flashing phones myself, but i've read about them
Does PagePlus work on Verizons network then?
If it does, you should be able to flash the rom fine, the only difference between roms made for each phone are the vendor files (theres actually a project in place right now to make a rom that will work for all carrier-specific S3s)
I would strongly suggest making a backup just in case though, and the usual disclaimer: i take no responsibility for your actions, but i would be more than glad to help if something goes wrong
Also if you root, you can install a clean rom that will have all the bloat remove, that way you're not just replacing it with other bloat lol
Good luck :good:
Click to expand...
Click to collapse
Yes, page plus uses verizon lines. I figured that a verizon rom was a good starting point, but if a custom rom would do the same thing, I'm not opposed to that either.
86turbodsl said:
Yes, page plus uses verizon lines. I figured that a verizon rom was a good starting point, but if a custom rom would do the same thing, I'm not opposed to that either.
Click to expand...
Click to collapse
Ok then, what I meant was that you could flash a custom Verizon rom with all the bloat removed, there would probably be things that you would need to change thought if you did flash it, like your APNs and such...so make a Nandroid just in case
You can try a Verizon prl also
But you might not have lte Verizon uses a sim for there 4g
Sent from my Hellfired SGS3
Sprint SGS3 Hellfire™ Maintainer
Yeah you cant get LTE from a carrier just with the PRL
CNexus said:
Yeah you cant get LTE from a carrier just with the PRL
Click to expand...
Click to collapse
True but the prl might help if he needs to connect for cell towers. But I know from other Verizon phones they need a sim for 4g services and a sprint sgs3 does not support sim card
Sent from my Hellfired SGS3
Sprint SGS3 Hellfire™ Maintainer
bthorne79 said:
True but the prl might help if he needs to connect for cell towers. But I know from other Verizon phones they need a sim for 4g services and a sprint sgs3 does not support sim card
Sent from my Hellfired SGS3
Sprint SGS3 Hellfire™ Maintainer
Click to expand...
Click to collapse
Yes, you are correct, not saying you arent just backing it up
I know for Sprint you need to have an LTE enabled PRL to get LTE at all...strange, but true
CNexus said:
Yes, you are correct, not saying you arent just backing it up
I know for Sprint you need to have an LTE enabled PRL to get LTE at all...strange, but true
Click to expand...
Click to collapse
Yeah, I don't care about LTE really, just trying to figure out if I can get a verizon rom to flash on it, or custom, that will blow away all the sprint specific stuff on this phone. it doesn't seem real happy to be a sprint phone on a verizon network.

[Q] going from att to T-Mobile

So I'm trading with my mother her T-Mobile sim for mine. She's going to take over my contact from Att and I'll take hers. Reason is her job well pay her bill but they want Att for some weird reason Lol. And i want the unlimited data with T-Mobile. So my question is once I unlock both phones, well I still be able to use my current rom? witch is avatar latest with KKO kennel. Would I just use an T-Mobile modem and radio or just stick with the Att radio/modem?
germanguy45 said:
So I'm trading with my mother her T-Mobile sim for mine. She's going to take over my contact from Att and I'll take hers. Reason is her job well pay her bill but they want Att for some weird reason Lol. And i want the unlimited data with T-Mobile. So my question is once I unlock both phones, well I still be able to use my current rom? witch is avatar latest with KKO kennel. Would I just use an T-Mobile modem and radio or just stick with the Att radio/modem?
Click to expand...
Click to collapse
yea ROM shouldnt matter. Its all about the baseband or modem. Might want to hop over to the T mobile forums and ask them. Another thing you want to do with your AT&T Note is hack it so you can use T Mobiles AWS bands. The Chip in our phones is disabled right now but we have the hardware to use the T mobile bands.
chousayz said:
yea ROM shouldnt matter. Its all about the baseband or the modem. Might want to hop over to the T mobile forums and ask them. Another thing you want to do with your AT&T Note is hack it so you can use T Mobiles AWS bands. The Chip in our phones is disabled right now but we have the hardware to use the T mobile bands.
Click to expand...
Click to collapse
Yea I'm going to. I seen an thread bought the aws band witch I plan on doing. I'm actually kinda glad my mother wants to switch the 3gb data is kinda killing me Lol. But I think an Att radio/modem should be just fine or i could be wrong.
It's actually very easy to enable the AWS band on the AT&T Note 2. T-Mobile LTE works out of the box, but for 3G (HSPA+), you need to flash a file from your computer. You don't have to be rooted though. It shouldn't void your warranty either or trip the flash counter: http://forum.xda-developers.com/showthread.php?t=2068041
Product F(RED) said:
It's actually very easy to enable the AWS band on the AT&T Note 2. T-Mobile LTE works out of the box, but for 3G (HSPA+), you need to flash a file from your computer. You don't have to be rooted though. It shouldn't void your warranty either or trip the flash counter: http://forum.xda-developers.com/showthread.php?t=2068041
Click to expand...
Click to collapse
Yea, that the thread I saw. My mother gets 4g on her T-Mobile s3 and in live like 15 minutes from her so i should get it also. When I do switch should I just stick with my Att radio/modem?
germanguy45 said:
Yea, that the thread I saw. My mother gets 4g on her T-Mobile s3 and in live like 15 minutes from her so i should get it also. When I do switch should I just stick with my Att radio/modem?
Click to expand...
Click to collapse
Flashing another Note 2's radio (as in another carrier's/model's) to your AT&T Note 2 can actually damage it. Not physically, but you'll lose your IMEI for example and probably get stuck in a bootloop. Stick with AT&T modems. You have to reapply that flash from your computer any time you flash or reflash a modem though. But seeing as how most custom ROMs don't come with a modem, you won't be doing that often anyways.
Product F(RED) said:
Flashing another Note 2's radio (as in another carrier's/model's) to your AT&T Note 2 can actually damage it. Not physically, but you'll lose your IMEI for example and probably get stuck in a bootloop. Stick with AT&T modems. You have to reapply that flash from your computer any time you flash or reflash a modem though. But seeing as how most custom ROMs don't come with a modem, you won't be doing that often anyways.
Click to expand...
Click to collapse
Yea that make perfect sense. If im understanding corectly, since im going to be sticking with this rom for awhile. Once i do the aws band mod all i got to do is put the sim card in and i should be good to go.
germanguy45 said:
Yea that make perfect sense. If im understanding corectly, since im going to be sticking with this rom for awhile. Once i do the aws band mod all i got to do is put the sim card in and i should be good to go.
Click to expand...
Click to collapse
Yes. Although you can change ROMs freely. This mod will stick until you flash a different modem (which is separate from a ROM), at which point you just flash it again.
Product F(RED) said:
Yes. Although you can change ROMs freely. This mod will stick until you flash a different modem (which is separate from a ROM), at which point you just flash it again.
Click to expand...
Click to collapse
And what bought kernels? Could I also switch kernels freely also?
germanguy45 said:
And what bought kernels? Could I also switch kernels freely also?
Click to expand...
Click to collapse
Yes. Modems rarely need to be changed and are in a separate file 99% of the time. Kernels and ROMs and anything else can be changed as many times as you want.
What area are you in? You might see how it works stock unlocked on the refarming first. I'm quite happy with how my i717 does in Chicago.
Product F(RED) said:
Yes. Modems rarely need to be changed and are in a separate file 99% of the time. Kernels and ROMs and anything else can be changed as many times as you want.
Click to expand...
Click to collapse
Ok that sounds good I flash many rams and kernel And never seen a modem in the flash.
bob60626 said:
What area are you in? You might see how it works stock unlocked on the refarming first. I'm quite happy with how my i717 does in Chicago.
Click to expand...
Click to collapse
I live in north part of Phoenix az And my mother gets 4g just bought any of the surrounding area.

[Q] Flash CDMA Galaxy S III to another carrier?

Ok first and foremost don't flame me for my stupid questions!
I was wondering if it was possible to flash a cdma Galaxy S 3 to my local carrier Nex-Tech Wireless. I've dug around quite a bit regarding ESN's PRL's and programs such as CDMA workshop & QPST but I'm a bit confused as to if it's possible and what exactly I would need to get.
A couple things to preface my question.
1. I currently have a cdma Galaxy S (the actual name is the galaxy s showcase but it's basically Verizon's Samsung Fascinate). I'm familiar with Odin and how to flash/restore to stock as well as editing roms to get mms to work. (Currently calls, text, and data/3G work as long as I use the showcase modems). This could be the first issue with using a different carrier's phone ( I don't know much about the modems).
2. Nex-Tech wireless is a small regional carrier in Kansas (similar to nTelos, C Spire, Alltel, etc.)
3. I've called Nex-Tech and they told me that they won't let me just bring in a cdma phone in and activate it. I assume this means that they don't have the ESN/MEID for unsupported phones allowed on their networks or in their database of phones. I am not sure if this is the case but its a guess.
Before I go buying a cdma GS3 I was wondering if anyone had luck flashing Verizons GS3 or the USCC GS3 to alternate cdma carriers. Or if they could point me in the right direction.
I think there are a couple issues. The first would be just getting the phone activated on Nex-tech service and then the other would be to ensure that 3G would work. MMS isn't a dealbreaker because I think I can get that going, it's really the least of my worries.
showcasemodr said:
Ok first and foremost don't flame me for my stupid questions!
Click to expand...
Click to collapse
We can't flame you for asking stupid questions. This is the GT-i9300 forum, so we don't know anything about CDMA S3's. Probably less than you.
We can probably flame you for posting in the wrong device forum though
rootSU said:
We can't flame you for asking stupid questions. This is the GT-i9300 forum, so we don't know anything about CDMA S3's. Probably less than you.
We can probably flame you for posting in the wrong device forum though
Click to expand...
Click to collapse
Well that is a very good point. I don't suppose a moderator would like to move this to the Sprint Galaxy S3 thread please?
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unlocked verizon LTE galaxy s3 sch-i535 on T-Mobile

I have been rooted unlocked for a while now on T-Mobile But the phone is having issues with data, calls, and generally not stable. I have 4.0.4 firmware baseband I535VRLHE. I want to know what Firmware and baseband are available that I can get and be able to root and unlock bootloader. for T-Mobile to be more compatible with current T-mobile. I have current CWM The VRZ build I got was from XDA contributor. I already know how to use ODIN. Please point me in the right direction If I left out any Info tell me. I need help. Thanks
You should be able to find the firmware for your model at http://sammobile.com/firmwares
You're probably experiencing issues because that device was built for a very different type of network. If I'm remembering right, that belongs to a CDMA network, while T-Mobile is a GSM one. So I kinda doubt that you'll be able to get decent performance out of it while on T-Mobile.
Give the update a try, but don't expect miracles. Maybe you'll see some improvement though.
Sent from my SGH-T999 using Tapatalk
DocHoliday77 said:
You should be able to find the firmware for your model at http://sammobile.com/firmwares
You're probably experiencing issues because that device was built for a very different type of network. If I'm remembering right, that belongs to a CDMA network, while T-Mobile is a GSM one. So I kinda doubt that you'll be able to get decent performance out of it while on T-Mobile.
Give the update a try, but don't expect miracles. Maybe you'll see some improvement though.
Sent from my SGH-T999 using Tapatalk
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I guess to simplify my quarry. I was asking which update to firmware like 4.1.1 or up will still allow me to root and unlock boot loader I know some newer firmwares won't allow root or boot loader unlock. from what I understand.
Also I want to change the radio to a newer one. The VFLHE is way to old even for CDMA. Thanks for the reply
You'll need to ask in the Verizon forums about that type of stuff. Our bootloader isn't locked, but I think yours is. The only thing I really know for certain about the I535, is that it's different enough that I don't want to try to answer that myself. I think they've always had to do things a good bit different from the rest of the US S3 models.
You should probably use that forum for any of the help you need. And only flash/use things that are intended for your model. Don't use anything here unless it's been verified by other I535 users that it is safe.
You might also find others who are doing the same or similar stuff you want to do. If so they can probably help more than anyone.
If you have any questions about T-Mobiles networks and things like that, that can't be answered in Verizons forums, we would do our best to answer them here if needed. But I really think you'll find a lot more reliable information in your devices forum.
Hope that helps!
Sent from my SGH-T999 using Tapatalk

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