Develop Bugs

Quick question. Reactivating 3G phone.

If I reactivate a non-4G phone. But not feature phone would I get unlimited data taken away?
Sent from my Galaxy Nexus using XDA

i assume you're on verizon since you mentioned 4g.
if thats the case, they should not remove your unlimited data IF you active a 3g smartphone.

If you go 4G to 3G or 3G to 4G, no change. 4G/3G to dumb phone will however.
Note going down to 3G then back up will require a new SIM card. (From my personal experiences, please chime in on differences).
Sent from my Galaxy Nexus using Tapatalk

You should be fine activating a 3g smartphone. If you had the double data promotion you would lose it by going to a 3g phone.
Sent from my Galaxy Nexus using xda premium

T-Mobile roaming

Got my T-Mobile s3 the other day. I roam allot on att in my area with my old phone but with this s3 it says I have 3 bars but i get a not registered on network error when I try to make a call. It will do this till I get back on T-Mobile.
Anyway to fix this crap? Is this phone not able to roam?
Sent from my SGH-T999 using Tapatalk 2

You have to go to settings and network to enable, I believe they do charged for roaming unlike sprint tho
Sent from my SGH-T999 using Tapatalk 2

I checked under settings and the only thing I found for roaming was data. I have free roaming. I tried manually selecting network when the only thing that was found was att and had bars but got the same error. Thanks for the reply
Sent from my SGH-T999 using Tapatalk 2

Mm I see that's weird
Sent from my SGH-T999 using Tapatalk 2

think I'll call T-Mobile and see what they have to say about it. Will check back for replies.
Sent from my SGH-T999 using Tapatalk 2

T-Mobile was no help. They said I should have a network mode option in settings but I don't and my brothers s3 didn't either. His phone is stock no root and has the same roaming issue mine does. This is crazy that we can't roam with this phone.
Sent from my SGH-T999 using Tapatalk 2

T-Mobile escalated the issue to some engineers who have been calling me back. Apparently me and my brother aren't the only ones with this issue but a ton of people have been having this issue.
And there still stumped as to why these phones are missing the network mode option. Can Anyone with T-Mobile version confirm if they have this option?
Settings> more settings> network mode. I have 2 s3 missing that option
Sent from my SGH-T999 using Tapatalk 2

No, I don't have that option.
But is this what you're looking for?
Powered by the SGSIII
NVM, just saw your post where you said you found this already.

Yeah according to the techs at T-Mobile there should be a 5th option there and he said he has it on his. Can you manually select att or any other carrier to roam on?
Any time we try it fails to connect and returns to T-Mobiles tower.
Sent from my SGH-T999 using Tapatalk 2

mustk1ll20 said:
Got my T-Mobile s3 the other day. I roam allot on att in my area with my old phone but with this s3 it says I have 3 bars but i get a not registered on network error when I try to make a call. It will do this till I get back on T-Mobile.
Anyway to fix this crap? Is this phone not able to roam?
Click to expand...
Click to collapse
It's *not* the phone. I have the same problem with my rooted G2. My wife has a stock G2 with the same results.
Likewise I used to be able to roam and force to ATT when TMo was poor or non-existent.
I first noticed that I hadn't seen it roam in a while....like within the last year or more. And the inability to roam *greatly* limits TMo's coverage.
We recently had to travel for a funeral into a very rural area with really poor coverage. Couldn't coordinate with family or friends. No Google Maps. Home security sys and cams were innacessible. We usually care for my sister who has Lupus....we didn't even have a way to check up on her.
In short, I've been a TMo cust for a decade and that experience was enough to make me switch. And the fact that it appears to be a widespread problem that *still* isn't fixed makes me even more angry.
Like you, TMo says it should work. I'm beginning to suspect a SIM card issue.

I think it's the phone. Never had any issue with roaming on previous android phones. Also I unlocked it and I'm now using it with att. Now I can't roam on T-Mobile with it. Other phones on my account that aren't s3 can roam fine.
Sent from my SGH-T999 using Tapatalk 2

I have T-Mobile right now and at my home up until about 10 days ago I received an amazing connection. Data was at 90ms 25MB Down and 4MB UP.
Now I am lucky to ping 1000ms. My fastest DL is 0.59MBPS and I get ZERO upload. T-Mobile has been creating engineering tickets for me with a promised response in 72 hours and it hasn't happened. I've been waiting 10 days now. I am about ready to leave them and head over to Verizon or Sprint.

I had the same issue with roaming with my s2. It's not the phone...I spent 2 weeks argueing with T-Mobile and have yet to EVER be able to roam. My wife has the sensation, now I've moved to the s3 and neither of us have successfully been able to roam. Makes me wonder if T-Mobile is full of **** with their "free" roaming agreements.
Sent from my SGH-T999 using xda premium

For some reason my s3 has the network mode option. I have great coverage here in the nyc area so I have never needed to roam but I do have that option under more settings.
Sent from my SGH-T999 using Tapatalk 2

awrnsmn said:
I had the same issue with roaming with my s2. It's not the phone...I spent 2 weeks argueing with T-Mobile and have yet to EVER be able to roam. My wife has the sensation, now I've moved to the s3 and neither of us have successfully been able to roam. Makes me wonder if T-Mobile is full of **** with their "free" roaming agreements.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
Then it's something Samsung is doing wrong. Like I said, unlocked using att now and can't roam on T-Mobile. It works fine att but roaming on other carriers is still an issue. It's something with the phone.
Sent from my SGH-T999 using Tapatalk 2

mustk1ll20 said:
Then it's something Samsung is doing wrong. Like I said, unlocked using att now and can't roam on T-Mobile. It works fine att but roaming on other carriers is still an issue. It's something with the phone.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
Which release are you on? Roaming for tmobu is controlled by SIM card. Weather the settings there or not. The towers won't allow you to connect if the SIM card doesn't match
Sent from my SGH-T999 using Tapatalk 2

Lol
the phone is working fine on at&t with at&t SIM. But still won't roam to other networks. Did the same thing before I unlocked it and was using T-Mobile SIM.
In the end no matter which SIM I use in the phone it will not roam. It's the phone. 3 SIM cards 3 different carriers NONE WORK WITH ROAMING ON THIS PHONE.
Sent from my SGH-T999 using Tapatalk 2

mustk1ll20 said:
Lol
the phone is working fine on at&t with at&t SIM. But still won't roam to other networks. Did the same thing before I unlocked it and was using T-Mobile SIM.
In the end no matter which SIM I use in the phone it will not roam. It's the phone. 3 SIM cards 3 different carriers NONE WORK WITH ROAMING ON THIS PHONE.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
Yes because the SIM cards do not allow you to connect to other towers that are not branded to that SIM card. A T-Mobile SIM will connect to T-Mobile towers and att SIM will connect to att towers.
Sent from my SGH-T999 using Tapatalk 2

elesbb said:
Yes because the SIM cards do not allow you to connect to other towers that are not branded to that SIM card. A T-Mobile SIM will connect to T-Mobile towers and att SIM will connect to att towers.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
So what your saying is roaming is no longer possible for any carrier? What's the point of at&t and T-Mobile to having roaming agreements? My T-Mobile flip phone roams no problem back and forth to at&t and back to T-Mobile no problem.
This s3 is the only phone I have ever had a problem with roaming.
I don't think your understanding the "roaming" part of this. So,,,, I have T-Mobile SIM and phone.. I go out of range of the T-Mobile tower. If at&t towers are around the phone should connect to it for roaming.
I have changed SIM cards out, I have also traded phones out. T-Mobile reps agree that the phone should roam. I had free roaming.
T-Mobile has always connected to other carrier towers for roaming till I got this phone.
I'll be borrowing an iPhone tomorrow to check for roaming.
Sent from my SGH-T999 using Tapatalk 2

mustk1ll20 said:
So what your saying is roaming is no longer possible for any carrier? What's the point of at&t and T-Mobile to having roaming agreements? My T-Mobile flip phone roams no problem back and forth to at&t and back to T-Mobile no problem.
This s3 is the only phone I have ever had a problem with roaming.
I don't think your understanding the "roaming" part of this. So,,,, I have T-Mobile SIM and phone.. I go out of range of the T-Mobile tower. If at&t towers are around the phone should connect to it for roaming.
I have changed SIM cards out, I have also traded phones out. T-Mobile reps agree that the phone should roam. I had free roaming.
T-Mobile has always connected to other carrier towers for roaming till I got this phone.
I'll be borrowing an iPhone tomorrow to check for roaming.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
Did you get a new SIM card with your s3? If so the roaming agreements change.
I have never went roaming with my s2 or s3 and they both have been everywhere. Not to mention roaming agreements aren't for everywhere, your area may not have the roaming agreement on that SIM. Have you put the old SIM from the flip phone into your s3? Either way roaming is controlled by either SIM or prl. And since T-Mobile doesn't use prl, it's gotta be your SIM.
Sent from my SGH-T999 using Tapatalk 2

[Q] help !! please att data not working on t-mobile 999

ok is there a rom that work right out the box for some sort of data with my prepaid at&t sim card i can make calls get mms, but cant get data i really need some sort of data working today i am rooted, unlocked and have no idea if i should be useing some sort of at&t kernal, or just changeing the apn, which has not worked yet?
can some one please direct me to the right thread or something

So you have a Tmobile T999 with an ATT prepaid sim?
I don't remember for sure so hopefully someone else can confirm, but I don't think the T999 can get better than 3g on ATTs network.
But if you're using the ATT sim, you'll be on their network so you may need to either unlock the phone and/or put in the correct ATT apn.
Sent from my SGH-T999L using xda premium

It will use HSPA on At&t no problem. Sounds like an APN issue. Your best bet is to go to the At&t forum and flash an At&t rom. Just make sure not to flash an At&t radio. Data should work out of the box on an At&t build.
Sent from my SGH-T999 using Tapatalk 4 Beta

I think it will use HSPA+ but only difference is that att hspa+ is not 42mg like on tmobile. I was getting around 7mg with my friends att sim on my t999.
Sent from my Galaxy Nexus using Tapatalk 4 Beta

gypsy214 said:
I think it will use HSPA+ but only difference is that att hspa+ is not 42mg like on tmobile. I was getting around 7mg with my friends att sim on my t999.
Sent from my Galaxy Nexus using Tapatalk 4 Beta
Click to expand...
Click to collapse
This is correct. at&t uses the older HSDPA 7/14 and HSPA 21 depending on where you are located. They opted to go to LTE instead of a dual carrier configuration for their HSPA+

What service do you have with the prepaid att service? Did you have to get a new sim card? I looked everywhere on here, but didn't see anything

[Q] Data issues with SGH-m919 using att

I unlocked my T-Mobile galaxy s4 and have been using it on AT&T for the post free months, since then I'm experiencing horrible data issues, can any one help?
Sent from my SGH-M919 using xda app-developers app

What is the horrible data issues that you're taking about? Please be more specific. More info would help is help you
☞Sent from here☜

ds337135 said:
I unlocked my T-Mobile galaxy s4 and have been using it on AT&T for the post free months, since then I'm experiencing horrible data issues, can any one help?
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Do you know if the tmobile m919 can receive 4g lte data on the att? thinking about unlocking mines as well just to have options
Sent from my SGH-M919 using Tapatalk 4

jjluv86 said:
Do you know if the tmobile m919 can receive 4g lte data on the att? thinking about unlocking mines as well just to have options
Sent from my SGH-M919 using Tapatalk 4
Click to expand...
Click to collapse
If i could piggy back off this thread, I also have a tmo s4 on att network. Yesterday I was with a friend who was also on att and I noticed his phone at that time had 4g where the network bars were located, mine however read H+. It was then I realized that I have never seen the 4g symbol on my phone ever. Do I just not get 4g? Or does this ROM that I have on my phone (slim bean) either not have the files for 4g or maybe its originally a T-Mobile ROM so I'm not getting 4g I don't know. I do get LTE tho.

projectpaki said:
If i could piggy back off this thread, I also have a tmo s4 on att network. Yesterday I was with a friend who was also on att and I noticed his phone at that time had 4g where the network bars were located, mine however read H+. It was then I realized that I have never seen the 4g symbol on my phone ever. Do I just not get 4g? Or does this ROM that I have on my phone (slim bean) either not have the files for 4g or maybe its originally a T-Mobile ROM so I'm not getting 4g I don't know. I do get LTE tho.
Click to expand...
Click to collapse
E is 2g/edge H is 3g H+ is 4g when you see 4g/lte that is LTE if your using and aosp based or international ROM... Hope that makes sense to ya
Sent from my SGH-M919 using Tapatalk

pyro43284 said:
E is 2g/edge H is 3g H+ is 4g when you see 4g/lte that is LTE if your using and aosp based or international ROM... Hope that makes sense to ya
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Ok this makes sense, thanks.

I had the same issues. If your previous phone that you used on AT&T was only 3G (I had an iPhone 4), your SIM card is only configured to receive and transmit 3G data. You will need to go on to wireless.att.net and order a new 4G SIM card, or go to a store and have them program one for you. This is assuming that you have already signed up for one of the new data plans, if not, they will likely not issue a SIM card capable of 4G and will probably hound you via email and SMS about using a 4G device on an old 3G data plan.

AIO wireless

I just picked up an AIO sim card and activated it my T-Mobile note 2. I had to put the APN in but after that lte popped right up. I love t mobile and I'm going to continue to use them but I'm traveling more with my new job and edge isn't cutting it. So far I've only seen one area on aio's coverage map where I wouldn't get service where I may go occasionally. If this works out I'm gonna lower my T-Mobile plan down to the lowest plan until more towers are upgraded.
Sent from my GT-N7105 using Tapatalk 2

What is an AIO Sim and what does it do different from a regular Sim?
Sent from my SGH-T889 using xda premium

AIO wireless is a prepaid service owned by at&t. It runs on at&t's native network. Its similar to go phone but data is throttled but unlimited. Their plans are on their website. So far today around Buffalo NY its been solid. I leave on a trip tonight so I'm gonna get to test the coverage/quality out more thoroughly.
Sent from my GT-N7105 using Tapatalk 2

And our tmobile phone lte will work on att's network? What about 4g or 3g?
Sent from my SGH-T889 using Tapatalk

All have worked for me so far. 3g 4g and lte.
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