Develop Bugs

S621 not working under T-Mobile anymore

Hey Guys,
Long time peruser first time poster. Heres the deal, got a HTC-S621 (on 8/15/08) with the Kavana_080408 ROM. Worked for a good while (until 8/23/08) until I used it on talkshoe.com then it simply stopped working. I can not receive a signal or on the rare occasion I do get reception, the phone can not communicate (no text, or calling service... Not even basic network communications)
but:
When I take the SIM out and put it in my old phone, the old phone worked.
When I use my wife's sim card from an alternate carrier, the S621 works.
The S621 does NOT work with SIM cards from T-Mobile.
I flashed the ROM at least 5 times (different ROMs) since the problem occurred, and the S621 still can not pick up the carrier signal.
so I'm deducing:
The radio is fine since alternate carrier sims work.
the sim is fine since it (and the recent prepaid sim i purchased) work in my previous phone.
there must be a registry entry or app that should resolve this issue.
Thanks in advanced for your helpful replies.

Reflash to 6.0 and see if the problem persists....if yes, return the phone with 6.0 on it and get a new one.

Mikey1022 said:
Reflash to 6.0 and see if the problem persists....if yes, return the phone with 6.0 on it and get a new one.
Click to expand...
Click to collapse
After the problem occurred, I installed:
The official Rogers WM6 rom
The official HTC Brightpoint rom
The official T-Mobile Dash rom
and the originally installed 080408 Kavan rom
of which an alternate carrier sim worked. The question still remains, "why do the T-Mobile sims not work". I have more affinity for the phone then I have for T-Mobile. Switching would be cheaper then buying a new phone but I would rather try to solve this issue.
Does anyone know how to force radio acceptance from the phone to the tower?

Maybe just maybe your sim is damaged?

Mikey1022 said:
Maybe just maybe your sim is damaged?
Click to expand...
Click to collapse
Oh.. Your going to love this part of the tale.
Like I mentioned before, swapping out my sim for my wife's sim makes the phone functional. So of course I can't just take her sim, so we decided to go to the T-mobile store after church this past Sunday.
SO. I walked in and store and DEMOED the whole tragedy in front of the store rep. And I purchase a new sim for 20 bucks.
Put it in... booted up.... BUBKISS!
Then the Rep. thought the new sim was faulty or something so he got another new sim.
Same results.
Got my wife's sim.... it worked.
So I went home deflated and then I thought hey... it could be a lock on my number and the IMEI number, so I went back to the store a purchased ANOTHER sim. A pre-paid sim. 7 bucks.
El' NUMERO CERO!
But my wife's sim stinking works! Uhg!
So... Recap...
3 Sim changes
T-mobile: -3 Other Carrier: 1

Ok... to be fair... as stated above, my T-Mobile sim worked for a week and some days before problems arose.

hmmm weird.
Here's an idea, give your Dash to your wife?

Mikey1022 said:
hmmm weird.
Here's an idea, give your Dash to your wife?
Click to expand...
Click to collapse
Oh we wise guy...Why I aughta...
A friend of mine thinks it might be the antenna specifically the GPRS but then I trying to figure out if thats the case, why does my wife's sim work? why would the antenna presumably not work at 850mhz and olny work at 1900mhz and why doesn't the phone tell the t-mobile tower that? All assumption though.

Installed Dash WM5 image and it didn't help. Does anyone know where the antenna is located?

its internal

i would jus tell t-mobile about it... and maybe u will get a free one.. jus go off on them til u get one he he he thats wat i did.. wen one of my buttons stopwrkin..

Mikey1022 said:
its internal
Click to expand...
Click to collapse
hmm.. so its not likely that it can be jarred loose or is segmented physically for the individual frequencies.
Guess I'll get a sim from my wife's carrier.

swaney said:
i would jus tell t-mobile about it... and maybe u will get a free one.. jus go off on them til u get one he he he thats wat i did.. wen one of my buttons stopwrkin..
Click to expand...
Click to collapse
That might work if i bought the phone. It was a gift from my brother... likely from a pawn shop or off of ebay.

Which leads you back to my suggestion

I'm going to switch carriers (via a prepaid sim) for a month then merge with my wife's plan if it lasts the trial.

I don't know what's wrong with this g2

alright here it is my t-mobile G2 won't connect to the t-mobile network at all, I've went through 3 SIM cards because this thing use to kill the SIM card from working on other t-mobile phones and it works perfectly fine on at&t network. so I've unlocked so it will work on at&t just to see if it would work. so i gave p and bought a MT 4G, but i still want to know if the G2 is fixable because I'm just about ready to throw in the towel this is what I've tried to resolve the problem called t-mobile they ended up saying just return the phone but i can't since i didn't buy it from them. Called them again got the unlock code. I've flashed the radio a few times. I've also just got the leaked 2.3.3 update and nothing has worked. It find t-mobile network but says your SIM card isn't allowed to connect to this network then after trying again it says unable to connect to network please try again later.
Just so frustrating i don't know what to do just about to say forget it. this thread is my last resort.
also i still have S-OFF
Sent from my HTC Glacier using XDA App

I'm having trouble following your story, its a bit jumbled.
Did the problem connecting with T-Mob start after you applied the unlock code? Its a know issue that using the unlock code may cause the G2 to stop connecting to any network.
http://forum.xda-developers.com/wiki/index.php?title=HTC_Vision#One_at_a_time._What_is_Subsidy_Unlock_and_why_do_I_want_it.3F
Also, I've seen it commented on here that T-Mobile doesn't care if you were the original buyer of the G2 or not, they will still replace your phone on warranty. You can ask them to confirm.

Sorry for the delay....it was having problems before I put the unlock code in. I only put it in to see if I could connect to another network
Sent from my HTC Glacier using XDA App

You've tried to fix it in hardware (ROM, radio). So it might be a hardware problem, like a damaged SIM tray (particularly if it is destroying SIMs). As mentioned, I'd try sending it in on warranty. Others here have claimed that T-Mob will replace it, even if you are not the original buyer.

[Q] New T989 never receive unlock message

I have a new T989 I bought without a contract. I have a Simple Mobile sim card. I have rooted and installed Juggernaut Rom. Before I rooted and now no changes in the fact when I install any sim I get no message of invalid or a place to enter unlock code.I know SM is suppose to work without unlock. But I havent been able to get SM to work at all. Do i need to flash another rom, because it seems that Im locked into Tmobile so far. Any help much appreciated!

cablemeblind said:
I have a new T989 I bought without a contract. I have a Simple Mobile sim card. I have rooted and installed Juggernaut Rom. Before I rooted and now no changes in the fact when I install any sim I get no message of invalid or a place to enter unlock code.I know SM is suppose to work without unlock. But I havent been able to get SM to work at all. Do i need to flash another rom, because it seems that Im locked into Tmobile so far. Any help much appreciated!
Click to expand...
Click to collapse
Which .apn are you using? are calls working with the exception of data and mms?
Sent from my SGH-T989 using XDA App

I have not changed the .APN. Nothing is working , there is a circle with a line through it in top status bar. Just get " mobile network not available" Im lost at how others have used Simple Mobile sims with nothing extra but to configure the mms/internet.

simple mobile is tmobile, you can use a tmo phone without unlocking with a simple mobile sim, i still have my simple mobile sim from when i used it on my vibrant, and i was able to make a call from my sgs2 without unlocking, so i might be wrong but you should try with an at&t sim, the apn settings for simple are on their site also.

Weird, I'm experiencing the same issue.
I believe the Simple Mobile SIM card is fine, because it works in /other/ (non-smart) phones such as my T-Mobile branded Motorola V195 and Nokia 6030 - I can place and receive calls and text messages.
But the Samsung Galaxy S II T989 is always stuck on "Searching" on the lock screen, and Settings: Wireless and network: Mobile networks: Network operators: Search now: only turns up "T-Mobile" and "AT&T" under Available Networks, both of which say "Your SIM card does not allow a connection to this network" when I tap on them.
Oh yes, and I did program the Access Point Names (APNs) as per Simple Mobile's instructions, twice.
Both with the stock ROM, and with Juggernaut-v4.1 (as it so happens). Baseband version T989UVKL1.
I'll try and find someone with a working T-Mobile SIM card, test that in the phone tomorrow, and report back.

Sim is prolly bad I had same issue when I first put my sim in try another simple sim, maybe sticking it in non smart phones Burns something cus that's exactly how it went down for me:/ when i was using an older phone as a temp, then bought the sg2 and didn't work try using ur sim on another smart phone if it doesn't read it it's toast like mine was
Sent from my SGH-T989 using xda premium

I tested a coworker's T-Mobile SIM card in the phone and had exactly the same problems (no network/unable to find network - just AT&T and T-Mobile), whereas my coworker was able to use my SIMPLE Mobile SIM card in their phone successfully.
I flashed my baseband from to T989UVKID *, and the behavior is the same - still saying that it's not registered, and still only shows AT&T and T-Mobile when I search for networks. Co-worker's SIM card still doesn't allow me to connect to T-Mobile, either.
I'm starting to think the IMEI for this phone might have been reported stolen, and maybe it's being blocked externally (I did buy it from a pawn shop eBay seller - albeit one with good feedback). Hopefully T-Mobile can tell me if I call them up.
*-Well, I loaded the zipfile from topic "1426001 - [RADIOS] CWM Flashable Modems" onto my sdcard and applied update from zip, and Settings: About phone says "Baseband version T989UVKID" now.
http://forum.xda-developers.com/showthread.php?t=1426001&page=18

probably blacklisted , sounds like this phone is blacklisted a lot people buying and selling before its even payed off , or getting a replacement and then selling
Sent from my SGH-T989 using xda premium

Ya sounds like that. You know what my brother had a vibrant brand new from someone on cragslist and then several months later his gave same problem. He was on Simple Mobile. He called t Mobile and believe it or not said they don't black list phones and say it is not possible for them to do so. It was different reps too that said the same thing. I don't know. Maybe true?
Sent from my SGH-T989 using XDA App

IMEI blacklisted
I just borrowed the SIM card from a coworker's AT&T phone. I had to unlock my Galaxy, but I'd purchased an unlock code a few days ago before I realized that the problem wasn't a SIM lock.
Sure enough, the phone works fine on AT&T's network. 2187 kbps down, 436 kbps up, 105ms ping (in my area).
It's definitely the carrier blocking my phone. Now to see if I can return it. Hey, it will work on the AT&T network now, or maybe the seller can catch the person that sold them the phone.
P.S. Judging by the threads on support.t-mobile.com, Support L1 doesn't have access to or know about the IMEI blocks, but L2 does. Case in point:
support.t-mobile.com/thread/15348
Incidentally, I don't feel that it's T-Mobile's fault that I got a blacklisted phone, although I would like it if they *published* their IMEI blacklists. In Australia, you can punch in an IMEI code and see if it's blacklisted.
amta.org.au/pages/amta/Check.the.Status.of.your.Handset

Unlocked GSM Galaxy Nexus - No signal al all

Hello,
A bit about my Nexus: Bought it online, it's the Domoco version, unlocked, rooted and been using just fine with many custom ROMs.
So yesterday morning, I was talking on the phone with a friend without any problem. After hanging up for a few hours, when I was about to call someone else, I realized my phone didn't have any signal at all. And it has been like that until now, about 48 hours.
It happened so suddenly without any warning. The phone has never been dropped and everything else working just fine.
So here's what I have tried:
- Restart the phone (multiple times)
- Batter pull (multiple times)
- Factory reset the phone (multiple times)
- Wipe cache and dalvik cache in CWM (multiple times)
- Downloaded SetCPU and set the minimum to 700Mhz (instead of 350Mhz)
- Reflash the ROM and tried with other Custom ROMs (I tried Xenon, Xylon, PA, and Carbon ROMs)
- Reflash the Radio and tried with other Radios too (I tried UILH1, XXLH1, SC04DOMLE3 and some others ...)
- I also went to Tmobile and request a new sim card - same problem.
- I borrowed a sim card from another Tmobile customer to try it on my phone - no signal - but the sim card works just fine on his phone.
I ran out of thing to try and I dont understand what happened ... anyone has an idea or something else for me to try ?
Anyone experience this before ?

Welcome too my hell. I have a playstore one now but my first Gnex was an international one and it has this same issue. Its a PCB problem a warranty would fix. I'm near Chicago and a few people have told me there is an electrical engineer downtown that fixes stuff like this. I don't have a price but I think something like this is your only option. Mine sadly is still a battery charger:thumbdown:
Sent from my Galaxy Nexus using xda premium

I know it sounds stupid, but have you tried toggling airplane mode? I run into the occasional loss of signal when im at work [fair to weak signal in the big metal box], and a reboot is the only thing that fixes it for me. Mines a play store model.

bodh said:
I know it sounds stupid, but have you tried toggling airplane mode? I run into the occasional loss of signal when im at work [fair to weak signal in the big metal box], and a reboot is the only thing that fixes it for me. Mines a play store model.
Click to expand...
Click to collapse
Ah yes, I actually did try that too but forgot to mention. I tried toggle airplane mode on and off, also the 2G only mode on and off. But it didn't help with anything.
Thanks for the suggestion.
JediDru said:
Welcome too my hell. I have a playstore one now but my first Gnex was an international one and it has this same issue. Its a PCB problem a warranty would fix. I'm near Chicago and a few people have told me there is an electrical engineer downtown that fixes stuff like this. I don't have a price but I think something like this is your only option. Mine sadly is still a battery charger:thumbdown:
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
So I guess I have to look for an electrician then, cause I have this phone just a little bit over a year so warranty is a no go for me.
Thanks for the idea.
PS: anyone else has more option for me ? I just wondered if I have bricked my phone ... cause I flashed lots of diff. ROMs to try out but never gotten a bricked phone before, could this be a bricked phone ?

Bricked refers to a phone that does what a brick does: nothing. It doesn't boot, it does not light or attempt to boot, it does nothing. This is a signal issue..I have no prior experience with docomo, but this thread came up on search: http://forum.xda-developers.com/showthread.php?t=1574018, maybe it'd be helpful. Have you converted it to yakju or takju and tried a google factory image?
And this: http://forum.xda-developers.com/showthread.php?t=1554150. If it is a circuit board, it kinda looks like s.o.l., and im sad to say that to you.

I wanted to let you know that I experienced the same issue. I bought the unlocked Docomo Galaxy Nexus, and had it working fine on T-Mobile for half a year, and then suddenly had no signal on Tuesday. Nothing I did - factory reset, battery in and out, sim card in and out - could fix it. Have you tried using different sim cards in your phone to see what works and what doesn't?
I figured out that my phone will accept AT&T, and actually does connect to T-Mobile while roaming (I used an international sim card). But, my phone will say "Cannot find mobile network" when any T-Mobile sim card is inserted.

chowabbajack said:
I wanted to let you know that I experienced the same issue. I bought the unlocked Docomo Galaxy Nexus, and had it working fine on T-Mobile for half a year, and then suddenly had no signal on Tuesday. Nothing I did - factory reset, battery in and out, sim card in and out - could fix it. Have you tried using different sim cards in your phone to see what works and what doesn't?
I figured out that my phone will accept AT&T, and actually does connect to T-Mobile while roaming (I used an international sim card). But, my phone will say "Cannot find mobile network" when any T-Mobile sim card is inserted.
Click to expand...
Click to collapse
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.

wocman said:
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.
Click to expand...
Click to collapse
I know others who bought their GNEX through the Play Store and those work just fine with T-mobile. I tried their sim cards in my phone and it doesn't work. I don't think T-mobile is intentionally blocking the docomo phones, because I'm getting T-mobile through roaming, when I use an international sim. My guess is they're doing something to the cell network that just somehow leaves our configuration out. Hopefully it's temporary, but who knows.
Worse case, I'll just purchase a Nexus 4, because I love 4G data for just $30/month with T-mobile. Anyone else got suggestions?

wocman said:
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.
Click to expand...
Click to collapse
Alright, update on this and there' good news. I called Tmobile and they said my IMEI is actually Blocked. The reason, according to him, is that Tmobile usually sweep the network to clean up all "un-supported" devices, so my device is apparently one of them and therefore got blocked about 2 days ago.
So he said for this, he needs to escalate it to business support and they surely can unblock it for me, but I have to wait until Monday since they don't work on weekend. But well, that's surely a good news. phewwwwwwwwwwwwww !!!
So to all of you guys who are in the same situation, make sure you call Tmobile first before flashing crazy like I did LOL.
Thanks for all the help.

I'd love to know if you are able to get this unblocked and working as I have the same problem as of Tuesday. I was traveling and went into a TMO store, and they told me it was NOT IMEI blocked. In fact they looked at the IMEI and read the page and said 'it was not eligible for blocking'.

I called TMO to see if my phone is IMEI blocked, and through three levels of support the universal answer was no. I'm now fully confused because if it's a hardware issue, why did several people all have the same problem all on Tuesday. For those others who are having issues, can you see the TMO network but not connect to it? That's what I have, I can see TMO and AT&T but haven't been able to connect to either one since Tuesday.

simple23227 said:
Alright, update on this and there' good news. I called Tmobile and they said my IMEI is actually Blocked. The reason, according to him, is that Tmobile usually sweep the network to clean up all "un-supported" devices, so my device is apparently one of them and therefore got blocked about 2 days ago.
So he said for this, he needs to escalate it to business support and they surely can unblock it for me, but I have to wait until Monday since they don't work on weekend. But well, that's surely a good news. phewwwwwwwwwwwwww !!!
So to all of you guys who are in the same situation, make sure you call Tmobile first before flashing crazy like I did LOL.
Thanks for all the help.
Click to expand...
Click to collapse
I'll call up T-Mobile tomorrow and ask if they IMEI blocked my device. I had them reset my signal and give me a new SIM card, but didn't realize it could have been IMEI blocked. I'll give them a call on Monday and let you know what the result is. Maybe it won't be too late to cancel my order on that Nexus 4...

I'm quite confused. I've been told last Thursday in a TMO store and with tech support that I didn't have an IMEI block, and the same with three reps tonight. I know the Sim Card is good, and so I'm being told its a hardware issue. However, several of the same phones had the same issue on the same day, so I can't buy it's a hardware issue. Has anyone with this issue flashed a new or different radio into the phone, either before or after the service loss? I have not, running it as it came out of the box.

I just got off the phone with T-Mobile Support, and they told me the device is not blocked. The reason is that T-Mobile cannot block or unblock devices that are not registered to T-Mobile. So I'm back to square one on this.

chowabbajack - When did you first have a problem, last Tuesday? Did you prior to that do any flashing or radio changes to the phone?
We're in the same spot....

alexwinsberg said:
chowabbajack - When did you first have a problem, last Tuesday? Did you prior to that do any flashing or radio changes to the phone?
We're in the same spot....
Click to expand...
Click to collapse
I did not do any kind of flashing or radio changes prior to Tuesday, when I lost signal.

chowabbajack said:
I did not do any kind of flashing or radio changes prior to Tuesday, when I lost signal.
Click to expand...
Click to collapse
That makes me think its something to do with the radio software, because I am the same the problem overall doesn't seem as large as the number of phones I perceive were bought on the Docomo deal.

Ive been using the docomo version of the nexus as well on tmobile for almost a year and it was since last tuesday when it no longer recieved any singal. with some digging around and too many phone calls, I found that the imei number on the phone is not the same as the one under the battery. i have the generic 004999010640000 imei right now and it not sure how i got it. as i bought it unlocked.
what i have tried:
reboot, battery plug, reinsert sim, factory reset, root and flash, got a new sim card, relocked, unlocked
sim card works on other phones.
also i have called tmobile and samsung endlessly and this is what i got:
tmobile cannot unblock the imei since it is not from them.
samsung is redirecting me to their japan branch.
docomo i cannot reach.
my phone before last tuesday:
unrooted stock 4.2.1
been testing different things to see if there is any way to restore the imei
also using root explorer, i cannot find my efs folder....

I've got the same problem since last Tuesday with my GNex and T-Mobile.
Mine is not from docomo though, but the French phone provider SFR, unlocked through FDocomo apk.
Rooted phone, running 4.2.1., no changes whatsoever in the past month and it worked fine until Tuesday, so I don't think I'm responsible for having no signal.
Honestly, I am relieved to see we are quite a few to have this problem, and also very pissed at T-Mobile for causing all this. What should be the next step then? Is there any chances they fix the issue quickly? If not, I might just go to the competition. I've tried AT&T sim cards and they work fine.

vanessax17 said:
Ive been using the docomo version of the nexus as well on tmobile for almost a year and it was since last tuesday when it no longer recieved any singal. with some digging around and too many phone calls, I found that the imei number on the phone is not the same as the one under the battery. i have the generic 004999010640000 imei right now and it not sure how i got it. as i bought it unlocked.
what i have tried:
reboot, battery plug, reinsert sim, factory reset, root and flash, got a new sim card, relocked, unlocked
sim card works on other phones.
also i have called tmobile and samsung endlessly and this is what i got:
tmobile cannot unblock the imei since it is not from them.
samsung is redirecting me to their japan branch.
docomo i cannot reach.
my phone before last tuesday:
unrooted stock 4.2.1
been testing different things to see if there is any way to restore the imei
also using root explorer, i cannot find my efs folder....
Click to expand...
Click to collapse
I have the exact same generic IMEI number as you, which does not match the number under the battery. I'm not liking the news that you did flash and still no go. I'm a novice at this stuff so please keep us posted.

Bought T-Mo S2 today for use for my mom. Will not connect to network.

Hey all. Mom dropped her phone in the toilet and needed a replacement. Bought a used T-Mo S2 off Craigslist today. SIM card in, all contacts are found off the SIM but when I try to connect to a network or make a call it tells me "Your SIM card does not allow a connection to this network".
I restored to stock using ODIN and a post here , and still having the same problem. I believe my mother called and reported the phone damaged, is it possible they have deactivated the SIM? Or is it that the phone itself is somehow broken? I will try another sim that I know is working and report back shortly.
Note : carrier is T-Mobile, phone is T-Mobile.
I will be updating using Kies as soon as the battery is charged enough to allow it.
Just checked the IMEI and it was reported stolen.
****ing assholes I swear to ****, people are so ****ing horrible. ****ing ****heads.

Deleted

richardlibeau said:
Sounds like the sim card is defective. To be sure though go into settings under mobile networks and see if once you select carrier that is gives you the option to pick on. It should give you tmobile and at&t at least. Once it does select tmobile once it does it should then say connected to network.
Sent from my SGH-T989 using Tapatalk 2
Click to expand...
Click to collapse
Okay, well.
I tried the old SIM. Same thing. Tried a known working SIM (My sisters SIM. Also T-Mobile. In her phone it works absolutely fine.) When I put known-working SIM in the S2 it says the same. If I hit "Availible Networks" it shows T-Mobile and AT&T. If I hit T-Mobile it gives me the "Your SIM card does not allow a connection to this network" message. EVEN WITH KNOWN WORKING SIM.

Looks like they jipped you dude, they sold u a Black listed phone.... u cant do nothing about it they ripped u off. phones garbage. If u want to make sure just call T-mobile

I could be misreading this, but it sounds like a stolen phone. I'd contact the seller and ask for a refund, say next call is to the police... then follow through.

Chris J said:
I could be misreading this, but it sounds like a stolen phone. I'd contact the seller and ask for a refund, say next call is to the police... then follow through.
Click to expand...
Click to collapse
phone was prolly reported lost or stolen and is prolly blacklisted

Guys the op edited his post ages ago saying it was reported stolen. Mystery solved lol.

closed