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hi everyone:
I have been looking via numerous thread online on many Android forums especially here and have been unsuccessful for the past 2 days now. So I figured I would need to create a thread and finally give in and ask for some help. I have a T-Mobile Samsung Galaxy 3 phone and I need to unlock it so that it will work on my AT&T service. Now i understand about rooting the phone and being able to play with themes etc, but its not that great if I can't use the phone itself.
Now without coming up with some kind of answer I must have watched about 40 youtube video's hoping to find out some kind of information. Mostly what I got out of it was numerous website that offer unlocking for phones at a certain price.
unlockcodesource(.)com
unlock2go(.)com
mobileunlockcodes(.)co.uk
Has anyone ever used any of these website or can someone give me some good advise on how I can get this phone unlocked please/
~Aqua
I think the toolkit stickied in the development forum has an option to SIM unlock the GS3. I have not tried this, and do not know if it works, but if the option is there, you might want to give it a shot.
If you're on contract with t mobile and your account is in good standing with them. Call them tell them you're going over seas and need to unlock your phone so you can use it. They will send you unlock code ... then pop in an att sim card and it will prompt you to enter the unlock code t Mobil gave you. Done
Sent from my SGH-T999 using xda premium
thanks _
Crisisx1 said:
If you're on contract with t mobile and your account is in good standing with them. Call them tell them you're going over seas and need to unlock your phone so you can use it. They will send you unlock code ... then pop in an att sim card and it will prompt you to enter the unlock code t Mobil gave you. Done
Sent from my SGH-T999 using xda premium
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Click to collapse
OK thank you. I followed your instructions and they said it would take up to maybe 24 hrs for the phone to be unlocked. If it isn't unlocked than she said to call back with the conformation number she gave me. If that doesn't work than they would have to give Samsung my info and could take up to 14 days. She said when you buy phones almost all stands and corp stores have already unlocked phones.
she also said it would be auto unlocked for good. Can they lock the phone back up once it is be unlocked?
~Aqua
edited: Once I have it unlocked ( if all goes good ) do i use the same APN settings that I needed to put into the phone in order for my phone to work on the AT&T network as I did with my S2 that I got unlocked ?
Don't they use different frequencies for HSPA+
You would be relegated to edge speeds, correct me if I'm wrong
speed issue
five40 said:
Don't they use different frequencies for HSPA+
You would be relegated to edge speeds, correct me if I'm wrong
Click to expand...
Click to collapse
I really don't know. That would be a great question if someone would be nice enough to help me with this information? Again i have a T mobile S3 hopefully its unlocked would I be losing speeds by being on the AT&T network?
thanks
~Aqua
AquaWater said:
I really don't know. That would be a great question if someone would be nice enough to help me with this information? Again i have a T mobile S3 hopefully its unlocked would I be losing speeds by being on the AT&T network?
thanks
~Aqua
Click to expand...
Click to collapse
The T-Mobile S3 has the 850/1900 3G bands so it will work on AT&T's 3G network. It will not get LTE though.
You can unlock either by paying for a code from the various resellers online or requesting an unlock code from T-Mobile if you have an account in good standing with them. If you can't get the code from T-Mobile I suggest searching 'T999 unlock' on eBay and you'll find some good options.
The tmobile galaxy s3 will work on the ATnT HSPA+21 frequency. Same frequency the International version runs on for that network.
Sent from my SGH-T999 using xda app-developers app
Edge network and 3/4G Question
I found an excellent place so far on eBay for buying unlock codes. they have almost 3800 sells with a 99% positive feedback. Great customer service. The guy answered numerous questions of mine and made sure i did everything correctly. Payment was $24.95 US, so hopefullly everything will go good.
He was talking about being on something called an " Edge " network which is a little slower, but he said you won't notice a difference between your unlocked S2 and the unlocked S3 now. Right now my S2 says I have 3G service when I use it. I dont understand how i had a inspire4G, what is the 4G for if AT&T only gives you 3G service? And where I am in United States I should have 4G service no matter what. I'm confused on that.,
AquaWater said:
I found an excellent place so far on eBay for buying unlock codes. they have almost 3800 sells with a 99% positive feedback. Great customer service. The guy answered numerous questions of mine and made sure i did everything correctly. Payment was $24.95 US, so hopefullly everything will go good.
He was talking about being on something called an " Edge " network which is a little slower, but he said you won't notice a difference between your unlocked S2 and the unlocked S3 now. Right now my S2 says I have 3G service when I use it. I dont understand how i had a inspire4G, what is the 4G for if AT&T only gives you 3G service? And where I am in United States I should have 4G service no matter what. I'm confused on that.,
Click to expand...
Click to collapse
Edge is 2G speeds, which are substantially slower than 3G speeds. IMHO, 3G speeds are livable, 2G/Edge is not.
Different phones have different radios which work on different frequencies. Some phones are not compatible with other services at all, and some will work on other carriers but often not at optimal speeds.
Darmokk said:
Edge is 2G speeds, which are substantially slower than 3G speeds. IMHO, 3G speeds are livable, 2G/Edge is not.
Different phones have different radios which work on different frequencies. Some phones are not compatible with other services at all, and some will work on other carriers but often not at optimal speeds.
Click to expand...
Click to collapse
So than why would someone suggest that I would get "edge" instead of what i have now? I'm getting 3G now with my T-Mobile S2 unlocked on AT&T, but now I'm going to have an unlocked S3, why wouldn't it be the same?
Because the radios in the devices are different.
Sent from my SGH-T999 using xda app-developers app
So than why would someone suggest that I would get "edge" instead of what i have now?
Click to expand...
Click to collapse
Because he/she doesn't know what he/she is talking about. You will be fine with a T-Mobile S3 on AT&T.
That's what I said earlier in not so many words.
Voice willl work fine you will not see HSPA+ speeds on At&t with a T-Mobile Galaxy SIII.
If the T-Mobile SIII has the hardware capability to support the At&t HSPA+ bands you would need modified radio software to unlock this ability.
I believe this was done on the Galaxy Note to tun on T-Mobile HSPA+ network before it was officially launched on T-Mobile.
kmdub I believe your the one that's wrong.
five40 said:
That's what I said earlier in not so many words.
Voice willl work fine you will not see HSPA+ speeds on At&t with a T-Mobile Galaxy SIII.
If the T-Mobile SIII has the hardware capability to support the At&t HSPA+ bands you would need modified radio software to unlock this ability.
I believe this was done on the Galaxy Note to tun on T-Mobile HSPA+ network before it was officially launched on T-Mobile.
kmdub I believe your the one that's wrong.
Click to expand...
Click to collapse
I unlocked my t999 and am using an att straight talk sim getting HSPA speeds. Going to switch back to tmobile prepay because it is way faster than att HSPA with better latency. Although coverage may be lacking, i may just switch to an att ST sim.
To answer your question, a Tmobile S3 will work on ATT HSPA+ network with the HSPA+ Speeds of up to 6-7mbps in NYC area. The average I've been getting is around 2-3.5 mbps. With the tmobile prepay sim I have, it's usually around 2-18mbps down in NYC area.
The T-mobile S3 will not work on the ATT LTE network because it lacks that radio (or so they say for now); there have been other threads suspecting it's just a matter of flashing the right radio to "turn on" the ATT LTE radio. However, if all you want is HSPA+ speeds, rest assured it will work fine.
The ATT S3 is lacking the AWS bands for TMobile so it will not get the HSPA+ on Tmobile.
Best regards.
radio issue
First off, I would like to thank everyone who has been helping me along with my issues with my phone. I appreciate it a lot and I'm picking up more knowledge more and more everyday from you guys and reading heavily on the forums.
if the hardware in the phone doesn't support HSPA+ 1) will i have to root the phone and 2) change the radio? And 3 ) if I change the radio does that mean I would need to install a custom ROM i order for it to work properly?
Also, from one of the post they said "The T-Mobile S3 has the 850/1900 3G bands " - of that is true will than I should be able to have the 3G speeds correct?
I really hope I am not making some people angry, I'm new to this and trying my hardest to understand everything so I don't make mistakes. Please bare with me. Again, thank you so much everyone who has contributed so far. I still have a lot to learn. The reason why is because I just don't want it to work ( I do, want it to work ) but I want to understand why everything is working they way it is and I've over the past almost month have been picking up a lot of knowledge. Can't wait to hear from you guys
kmdub I believe your the one that's wrong.
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Click to collapse
No, actually, you are wrong. The T-Mobile S3 does not need any modification to work properly on AT&T's HSPA network. Seems you are confusing something else with frequency. Quit spreading bad information.
OP: Don't worry about it. Some are making this way more complicated than it needs to be. As said before, if you have the T999, you will be fine on AT&T's HSPA network without any modifications (other than an account...lol). Just get the phone SIM-unlocked, pop in the right SIM, you are good to go. Seriously, it is that easy.
Well there it is, I stand corrected!
I had no idea the T-Mobile SIII supports At&t HSPA+ bands.
Is the same true to all T-Mobile HSPA+ phones?
Sorry for any issues, just learning
Hi everyone,
thanks so much for the info. Will the S2 I needed to put in certain APN settings inorder to receive MMS ( picture ) via texts. Do i use the same settings for the Samsung Galaxy 3?
kmdub said:
No, actually, you are wrong. The T-Mobile S3 does not need any modification to work properly on AT&T's HSPA network. Seems you are confusing something else with frequency. Quit spreading bad information.
OP: Don't worry about it. Some are making this way more complicated than it needs to be. As said before, if you have the T999, you will be fine on AT&T's HSPA network without any modifications (other than an account...lol). Just get the phone SIM-unlocked, pop in the right SIM, you are good to go. Seriously, it is that easy.
Click to expand...
Click to collapse
I too have learned from this thread
Hi,
I just received an unlocked International Galaxy Note II in the US. Ordered from Handtec in the UK, and the phone appears to be the French model. I have observed what I think is a problem when trying to use the phone on T-Mobile USA.
I put my T-Mobile USA SIM card in the phone, and the phone thinks I am roaming. Uhhhh no. It's a T-Mobile USA SIM card on the T-Mobile USA network. It is NOT roaming. Now, it probably doesn't have any impact beyond the "R" notifier, and a "Roaming" page which shows up on TouchWiz, but it DOES make me feel very uneasy. I have to enable "Data use while roaming" to be able to use data while on my home network!! It's crazy!
To those who will point out, yes, I know that T-Mobile USA has their 3G currently on the AWS 1700/2100 band, which the Note II does not support. I am therefore using EDGE with this phone. (Yes the data speeds suck, but T-Mobile's refarming will make this problem go away in the next few months). Even though I am on EDGE, I am not "roaming" unless the Note II's definition of roaming is different from mine. I am still on the home network, regardless of whether I am on 2G or 3G.
Has anyone else seen a problem like this?
If I can't figure this out in the next day or two, I may return the Note II and just wait another month or so for the T-Mobile US version. (Probably that's what I should do anyway, but I figured the GT-N7100 would get more developer support).
Hope someone can help!
Thanks!
Edit: I forgot to add - I also have and unlocked international Note 1 GT-N7000 and an unlocked iPhone 4. Neither possess the T-Mobile USA 3G band, and neither of which show roaming when I'm using T-Mobile USA. So, either T-Mobile did some funky network work today which changed something, or there is something different (and possibly a bug) about how the Galaxy Note II determines if it's roaming.
Unfortunately I cannot be of any assistance to your issue, just wanted to comment however. I find it very odd that ALL Note II's don't work on every frequency. Bear with me, I'm under the impression that they are identical hardware wise, every version. So, maybe it's a simple matter of flashing a different radio.img? Not that there are any available currently, but there will be shortly. I hope (think) it will be similar to the ATT Note on Tmo. Hopefully it works out better though. We still don't know if the Tmo Note II will be HSPA+42 or not, but it will support next years Tmo LTE.
So, as of now, this is a little bit of a disappointment for Tmo customers looking for the N7100. Hope you can find a workaround for at least HSPA+21 soon :good:
ccampbell1 said:
Hi,
I just received an unlocked International Galaxy Note II in the US. Ordered from Handtec in the UK, and the phone appears to be the French model. I have observed what I think is a problem when trying to use the phone on T-Mobile USA.
I put my T-Mobile USA SIM card in the phone, and the phone thinks I am roaming. Uhhhh no. It's a T-Mobile USA SIM card on the T-Mobile USA network. It is NOT roaming. Now, it probably doesn't have any impact beyond the "R" notifier, and a "Roaming" page which shows up on TouchWiz, but it DOES make me feel very uneasy. I have to enable "Data use while roaming" to be able to use data while on my home network!! It's crazy!
To those who will point out, yes, I know that T-Mobile USA has their 3G currently on the AWS 1700/2100 band, which the Note II does not support. I am therefore using EDGE with this phone. (Yes the data speeds suck, but T-Mobile's refarming will make this problem go away in the next few months). Even though I am on EDGE, I am not "roaming" unless the Note II's definition of roaming is different from mine. I am still on the home network, regardless of whether I am on 2G or 3G.
Has anyone else seen a problem like this?
If I can't figure this out in the next day or two, I may return the Note II and just wait another month or so for the T-Mobile US version. (Probably that's what I should do anyway, but I figured the GT-N7100 would get more developer support).
Hope someone can help!
Thanks!
Edit: I forgot to add - I also have and unlocked international Note 1 GT-N7000 and an unlocked iPhone 4. Neither possess the T-Mobile USA 3G band, and neither of which show roaming when I'm using T-Mobile USA. So, either T-Mobile did some funky network work today which changed something, or there is something different (and possibly a bug) about how the Galaxy Note II determines if it's roaming.
Click to expand...
Click to collapse
That happened to me as well using my International Galaxy S3, I dug into it for about a month and trust me, it's something with the phone detecting that it can't connect to the HSPA+ bands it supports, and when it "defaults" down to EDGE it considers it "Roaming". Stop digging for answers, I was at it for weeks, this is the reason.
You wont get charged for roaming or anything though, so use EDGE until T-Mobile's refarming finally happens; I waited for 2 months and nothing, so I jumped ship and got Straight Talk. I use over 15 GB of data a month, no throttling, $45 bucks. :good:
Hope this helps, because NO ONE gave me a straight answer, Dont even bother calling T-Mobile, they're of absolutely no help. I flashed all sorts of custom ROMs, Kernels, Network Tools, Diagnostics, etc. trying to figure it out. It's just the way these Samsung phones (GT-I9300 and N7100 by the looks of it) work when their 3G/HSPA+ bands are not supported.
Cheers!
farfromovin said:
Unfortunately I cannot be of any assistance to your issue, just wanted to comment however. I find it very odd that ALL Note II's don't work on every frequency. Bear with me, I'm under the impression that they are identical hardware wise, every version. So, maybe it's a simple matter of flashing a different radio.img? Not that there are any available currently, but there will be shortly. I hope (think) it will be similar to the ATT Note on Tmo. Hopefully it works out better though. We still don't know if the Tmo Note II will be HSPA+42 or not, but it will support next years Tmo LTE.
So, as of now, this is a little bit of a disappointment for Tmo customers looking for the N7100. Hope you can find a workaround for at least HSPA+21 soon :good:
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Click to collapse
farfromovin,
I agree it's a complete pain why one model can't work worldwide - or even between carriers in one country, the US!! I'm not sure that all the revisions are the exact same hardware though. Certainly the different revisions will support different LTE bands from one another, different 3G bands (ie T-Mobile USA) and even different technologies (VZW, Sprint, US Cellular CDMA). Whether there is one uber radio chip that's the same in all versions, with different bits enabled here and there, I don't know. I would doubt that a chip currently exists to support all GSM, UMTS, LTE and CDMA bands in the one, but you never know.
I really cannot wait (getting super sick of it) until T-Mobile's 1900MHz refarming, and finally all UMTS/HSPA phones will work on pretty much any UMTS/HSPA network worldwide. But just as we finally get 3G harmony, LTE comes along with a zillion different bands, and we're back to where we were at the start of GSM, and the start of UMTS - all over again.
As far as getting the GT-N7100 to work on T-Mobile AWS bands - unless the radio supports that band somewhere, and can be enabled by some hacky flashing, I don't think there's much chance. I followed a thread for a while which was trying to do that for the original GT-N7000 and it ended up nowhere unfortunately.
I'd be very, very surprised if the T-Mobile US official Note II did not support DC-HSPA +42. Given how TMO pushes that, I don't think they'd sell a phone without it these days. I'm kind of surprised the GT-N7100 doesn't have it, to be honest, but I guess it's not yet that widespread, and most carriers will bypass it to go to LTE.
Cheers!
Ars-Hexis said:
That happened to me as well using my International Galaxy S3, I dug into it for about a month and trust me, it's something with the phone detecting that it can't connect to the HSPA+ bands it supports, and when it "defaults" down to EDGE it considers it "Roaming". Stop digging for answers, I was at it for weeks, this is the reason.
You wont get charged for roaming or anything though, so use EDGE until T-Mobile's refarming finally happens; I waited for 2 months and nothing, so I jumped ship and got Straight Talk. I use over 15 GB of data a month, no throttling, $45 bucks. :good:
Hope this helps, because NO ONE gave me a straight answer, Dont even bother calling T-Mobile, they're of absolutely no help. I flashed all sorts of custom ROMs, Kernels, Network Tools, Diagnostics, etc. trying to figure it out. It's just the way these Samsung phones (GT-I9300 and N7100 by the looks of it) work when their 3G/HSPA+ bands are not supported.
Cheers!
Click to expand...
Click to collapse
Hey Ars-Hexis,
Thanks so much for the reply. I googled about the same issue on the i9300 as you mentioned - and sure enough a couple of threads on androidcentral, and tmobile support - and all with pretty much a bunch of people going "what?" I think you're right, and this is either some crazy change which Samsung has made to the "S3" generation of phones, or it's an unintended bug which was introduced. I contacted Samsung support on twitter but I'm sure they'll tell me to go away since this is an international model and not sold or supported in the US.
I would love to have this properly reported to Samsung though because it is NOT correct behaviour, and I'm sure it does not meet the 3GPP standard behaviour. These phones' definition of "roaming" is frankly wrong. It's possible they know about the bug but don't care about it too much, because it only affects the minority of importers or travelers, and then only on the very few networks which use AWS band for 3G.
The phone and data works fine of course, so it's really a cosmetic annoyance. However, if I was actually outside TMO's network without knowing it (maybe camping on to some network on the Canadian border or something) then I'd never know if I was actually roaming or not. So the phone's roaming indicator, by being permanently false, is useless in the times when I'm actually roaming. Since this is not a likely scenario for me to be on the Canadian border and roaming onto an AWS-only network any time soon, I'll not worry too much about it.
Yes, I'm really sick waiting on this refarming. It's a huge undertaking of course, so I understand why. I do have a Straight Talk AT&T SIM which I got for my Galaxy Note 1, however I don't use it often for several reasons: haven't ported my number to it, am wary about data throttling or cut-off, and I find the data hit or miss on Straight Talk anyway. I heard stories about people being warned or cut off after 100MB in any day, but if you're saying 15GB and no throttling, it may be something I want to put to the test!
Thanks a lot for your reply! It's nice to know I'm not crazy!
Cheers!
ccampbell1 said:
Hey Ars-Hexis,
Thanks so much for the reply. I googled about the same issue on the i9300 as you mentioned - and sure enough a couple of threads on androidcentral, and tmobile support - and all with pretty much a bunch of people going "what?" I think you're right, and this is either some crazy change which Samsung has made to the "S3" generation of phones, or it's an unintended bug which was introduced. I contacted Samsung support on twitter but I'm sure they'll tell me to go away since this is an international model and not sold or supported in the US.
I would love to have this properly reported to Samsung though because it is NOT correct behaviour, and I'm sure it does not meet the 3GPP standard behaviour. These phones' definition of "roaming" is frankly wrong. It's possible they know about the bug but don't care about it too much, because it only affects the minority of importers or travelers, and then only on the very few networks which use AWS band for 3G.
The phone and data works fine of course, so it's really a cosmetic annoyance. However, if I was actually outside TMO's network without knowing it (maybe camping on to some network on the Canadian border or something) then I'd never know if I was actually roaming or not. So the phone's roaming indicator, by being permanently false, is useless in the times when I'm actually roaming. Since this is not a likely scenario for me to be on the Canadian border and roaming onto an AWS-only network any time soon, I'll not worry too much about it.
Yes, I'm really sick waiting on this refarming. It's a huge undertaking of course, so I understand why. I do have a Straight Talk AT&T SIM which I got for my Galaxy Note 1, however I don't use it often for several reasons: haven't ported my number to it, am wary about data throttling or cut-off, and I find the data hit or miss on Straight Talk anyway. I heard stories about people being warned or cut off after 100MB in any day, but if you're saying 15GB and no throttling, it may be something I want to put to the test!
Thanks a lot for your reply! It's nice to know I'm not crazy!
Cheers!
Click to expand...
Click to collapse
Hey there! Sorry I hadn't answered in such a long time. We'll actually I've found that the S3 (sold it) and the Note 2 (own it) some how cannot be tracked for data usage correctly by straight talk. It's quite interesting... I ported my number over from T-Mobile, so if you have an S3 with a T-mobile prepaid sim... I think you have nothing to lose! I'm in Dallas and regularly get around 3-4Mbits/S during high usage hours and 6-7Mbits/S after 7 pm when network usage goes down.
There have been 2 occasions over the past 2 months where I'm throttled for like an hour and suddenly it gets uncapped on its own (?!?!?) lol. Last month I used about 25 GB... It's insane. Btw, if you if get throttled for real (happened to me once), you can just call them and say your "Internets is slow" (act technologically challenged) and they'll reset it.
Ah 1 last thing: I got the at&T ST sim card when I switched.
Cheers!
Sent from my GT-N7100 using XDA Premium HD app
I just got my International Note 2 today, and I am using it on the T-Mobile network also. I am seeing that I am roaming but my data is off and I am just using wifi. I have turned off my phone and back on again and its still showing. But after reading this whole thread I am getting that is a bug or something along those lines is that correct? Thanks.
I really need to know
Sent from my Nexus 4 using Tapatalk 2
roaming
I am on prepaid tmobile and I have Roaming sign only in areas where I used to loose signal with my old phone . Basically when I go in Garage underground my signal starts getting weaker and weaker and then roaming kiks in and signal is up all the way . T-mobile does not charges for local roaming . If you use USA tmobile and you are in usa you are fine . My texts and voice are still the same rate for me . When I had Chinese rom it was showing all the time , now I flashed German t-mobile and R shows only sometime , but it does not bother me .
Hope this helps .
I too have a Note II (GT-N7100) I purchased in Thailand in December. I use it on the T-Mobile network and have the same issues with the "R" symbol. I am located in Tampa Bay area, Florida.
T-Mobile was indicating to me in January that this was an issue in weaker signal areas for their data network as they prepare to refarm it. Don't know if this explanation is entirely accurate, but I find in my local area that the R symbol goes away in certain areas and it behaves "normally". This includes the area where my T-Mobile office is located. It seems to be somewhat of a patchwork network, and for some reasons certain areas cause it to go into the Roaming mode.
I was just on a trip with stops in Los Amgeles, San Francisco, and Philadelphia and noted the same behavior in some of those cities: Getting normal signal indications in some places, and Roaming in others.
Group MMS is DELAYED!!! WHY!!
I switched from an iPhone(which was fine) to a Nexus 4 and the Nexus was a disaster.
I figured the Nexus 4 was messed up so I sold it and then got the Note 2. Its T Mobile's version and unlocked.
I changed the APN settings to the LTE one and it hasnt really made a difference. AT&T stated that I'm on the correct LTE plan. I tried GO SMS Pro and it really didnt fix it
The delays are sometimes 3-5 min, sometimes 6-12 hours. Most annoying is that when I try to send a MMS, it gets stuck in the sending phase. Id need to send another MMS to push the one thats not sending. Sucks.
What is going on? Is it Android? Could it be because its not an official AT&T phone(but I heard its technically the same phone). Is there something else I should try?
I give up guys. Can someone plz help?
Friendly bump?
Sent from my GT-N7105 using xda premium
Wow I have no idea friend. No idea. Seems to be an internal issue with the phone maybe the antena? Not sure. Sorry I know this doesnt help.
I could be wrong, but I'm pretty sure the T-mobile Note 2 won't work properly on AT&T because this phone does not support AT&T's LTE band. Similarly, AT&T's Note 2 won't work properly on Tmo's network either.
With that said, the guys over on AT&T's forum have a guide to enable Tmo's band on their phone. Maybe... MAYBE, you can use a similar process to get their band on your phone. ... Then again, I know nothing about that. I just saw the thread and figured it might be beneficial to you.
http://forum.xda-developers.com/showthread.php?t=2068041
Quick question though, Why did you get a Tmo Note 2 if you're on AT&T?
default159: The T-Mobile T889 will work with AT&T on HSPA only, no LTE. No reversible, safe and repeatable procedure has been established to enable LTE on the T889 yet. The AT&T I317 will work on T-Mobile on HSPA when its been refarmed to 1900 MHz, otherwise on EDGE. It will work on AWS HSPA with the mod posted here.
Shockg911: It could be a number of things, but double check your MMSC settings and possible MMC settings versus AT&T CSC files. If you're familiar with Logcat and DDMS, check that out too.
Hey All,
I've placed a Tmobile sim in my Att unlocked GS3. Ive seen many posts stating that the Att version wont get 4g on tmobile but 4g works fine for me; regularly I can get 5 to 10mb downloads. My issue though is that Im sometimes dropping from 4g to 2g/Edge then back to 4g. Should my phone be dropping to 3g instead ? Im quite shocked when it happens since I usually had strong 4g not far away at all.
Is the general consensus to to simply get a Tmobile device instead of bringing something from at&t? I really dont want to root the phone or flash roms at this point since Im just testing out the service.
goon3r said:
Hey All,
I've placed a Tmobile sim in my Att unlocked GS3. Ive seen many posts stating that the Att version wont get 4g on tmobile but 4g works fine for me; regularly I can get 5 to 10mb downloads. My issue though is that Im sometimes dropping from 4g to 2g/Edge then back to 4g. Should my phone be dropping to 3g instead ? Im quite shocked when it happens since I usually had strong 4g not far away at all.
Is the general consensus to to simply get a Tmobile device instead of bringing something from at&t? I really dont want to root the phone or flash roms at this point since Im just testing out the service.
Click to expand...
Click to collapse
You are in a refarmed market from the sound of it. The reason you go from 4g to EDGE is because the refarmed spectrum is most likely not through your entire coverage area.
T-Mobile uses the 1700 band, which at&t does not support, as their primary 4G deployment. This is why it is always recommended to get a T-Mobile S3.
That said, there is a firmware image for at&t's GS3 that unlocks T-Mobiles AWS band not just for 4G but for LTE as well. It is in the at&t forum - you will have to read the entire thread to get the relevant files and information on how to do it. Note that this CAN brick your phone permanently so only attempt it if you are willing to take that chance and you are familiar with download mode and ODIN.
The upside of using that hack is that the T-Mobile S3 doesn't support LTE at all.
Sent from my SGH-T999
Thanks for the clarification and info about the hack. Assuming I get a Tmobile device, should I expect to see a 3g icon instead or would it still say 4g?
goon3r said:
Thanks for the clarification and info about the hack. Assuming I get a Tmobile device, should I expect to see a 3g icon instead or would it still say 4g?
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It'll say 4g.. A 4g icon really means 3g/h+ and a 4g lte icon means lte
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Thanks!
Here is the link http://forum.xda-developers.com/showthread.php?t=1771021&page=25 Start reading from post #246
So my brother gave my his old Sprint Galaxy Note 5, which he had unlocked so that I could use it on AT&T. We had to set up the new APN to work with GSM instead of CDMA. The issue is that it cannot access 4G bands, just 3G. There are some other minor issues as well, such as location based services. I was looking into flashing AT&T firmware onto the phone, but cannot seem to find a way to do it online. I may not have scoured hard enough, or it may not be able to be done.
Would anyone be able to shed some light on this for me? I would prefer not to brick the phone by attempting something when I clearly do not have enough information about the subject. Could it just be an APN issue? Or will the phone just be stuck on a lower speed band? Any help would be appreciated.
Thanks.
The modem will only be able to access the 3G network as AT&T uses different LTE bands then Sprint.
I just found that out a little earlier today. Forgot to delete this thread. Thank you for your reply though.
ZionMirem said:
I just found that out a little earlier today. Forgot to delete this thread. Thank you for your reply though.
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You might be able to force the network bands with an app. No promises.
Well crap, just got mine unlocked to do the same thing. Guess I'm better off selling it and getting the att version. Was hoping the N7 took off so people would dump their N5 but looks like people will be keeping it.
Sent from my SM-T810 using Tapatalk
ZionMirem said:
So my brother gave my his old Sprint Galaxy Note 5, which he had unlocked so that I could use it on AT&T. We had to set up the new APN to work with GSM instead of CDMA. The issue is that it cannot access 4G bands, just 3G. There are some other minor issues as well, such as location based services. I was looking into flashing AT&T firmware onto the phone, but cannot seem to find a way to do it online. I may not have scoured hard enough, or it may not be able to be done.
Would anyone be able to shed some light on this for me? I would prefer not to brick the phone by attempting something when I clearly do not have enough information about the subject. Could it just be an APN issue? Or will the phone just be stuck on a lower speed band? Any help would be appreciated.
Thanks.
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Click to collapse
It does support the AT&T LTE bands, call AT&T and have them put in the IMEI into the system to allow LET access. Since it's a Sprint phone it's not in their system as a 4G/LTE device. I got mine working but seems it has a difficult time getting into LTM mode, I have the correct APN setup and 3G works fine.