Develop Bugs

need help figuring this out with my sim

i have the gt-i9250 and i always used an at&t sim with it with out an issue, recently i wanted to switch to t-mobile (thinking the phone should be unlocked considering it was an international phone and was the yakjuxw than i flashed it to yakju which was wierd cause i had google wallet on it and it was working fine although i only thought it was compatible with takju, but anyway all and all i put it to the usa firmware of takju 4.0.4 not going to jellybean yet, but my issue is that i am not able to use the t-mobile sim card in it and i get this (look at screenshot where signal is) what does this mean and how come i cant get signal, when i go to settings and mobile networks it shows me the apn for t-mobile us but not selected so i select it than after i go to mobile networks and it shows t-mobile and at&t and when i click any of them they tell me its unable to connect and it cant connect to the network at this time, so what would this mean and how would i fix it so that i can use it with my t-mobile sim card, also i flashed the newer NA radio uglc1.

That is weird. It should work on either of them. It just means you have no signal. That is strange. You could've actually just popped the Sim right in. It didn't matter if you were using a ROM
Sent from my Galaxy Nexus using xda app-developers app

Is the SIM activated for sure? I know when I switched to the T-mobile $30 plan it took it a good 15 minutes or so to activate, and then I didn't actually get signal until rebooting the phone for whatever reason.

Did you reboot your phone?
Although you can sometimes hot plug a sim card by turning on flight mode, taking the sim card out and toggling flight mode a few times, it won't work sometimes.

probably your cell imei not free and therefore can not change your sim.
There is an application called "****docomo" worth to release the imei. Make a backup just in case
https://www.dropbox.com/s/mcg9gtn1ei85357/FuxkDocomoV3.1.apk

yosula said:
probably your cell imei not free and therefore can not change your sim.
There is an application called "****docomo" worth to release the imei. Make a backup just in case
https://www.dropbox.com/s/mcg9gtn1ei85357/FuxkDocomoV3.1.apk
Click to expand...
Click to collapse
Don't think he has a SIM unlock problem. Considering that it was working with AT&T, which never had a locked version of the GNex, I think he's having another issue.
I'd tell the OP to make 100% sure that his new T-Mobile SIM is activated and not defective, then try a few reboots and swaps back to the old SIM and do some troubleshooting. If it's the phone and not the SIM, its likely a mobile network registration error or an APN issue.
Looking in the notification bar, it seems like the phone doesn't think there's even a SIM inserted. Make sure you didn't damage a pin in the SIM tray, and that the SIM is properly inserted and clean. I don't think you'd get this error of "no SIM" if your phone was locked. If that was the case, the phone would recognize the SIM and prompt for an unlock code, which you're not getting.

No network issue after repair

Hi there,
I recently sent my phone back to HTC because my volume button was stuck, which resulted in it not being able to boot (as it always went straight to recovery). They repaired it, and after three weeks without my phone I know received it back. They 'replaced parts and did a software update.'
Problem is, now I have no mobile network connection. The phone recognises the SIM fine, but no signal and search networks results in "Error while searching for networks."
I'm blaming the software update HTC did, so I send them another email. The thing is, I don't want to send it back AGAIN, I had the phone a full 2 weeks before it broke and haven't been able to use it since. Is there anything you guys can think of that doesn't involve rooting it and losing my warranty (which I will probably need now)?
Thanks a bunch

Hello,
have you tried to switch between the network mode; only WCDMA or only GSM? (Settings->Mobile Network->Network Mode)

Pundy said:
Hello,
have you tried to switch between the network mode; only WCDMA or only GSM? (Settings->Mobile Network->Network Mode)
Click to expand...
Click to collapse
Thanks for the reply. Yes I have, no effect. One other weird thing I have noticed since first posting: at the about -> Phone Identity screen, the phone number does not match my actual sim phone number. It reads the SIM fine though, as all my SIM contacts are available.

Could you use/try another SIM Card to check its work with a different one?
Is WiFi working? Any interruptions druing a regular call?

Pundy said:
Could you use/try another SIM Card to check its work with a different one?
Is WiFi working? Any interruptions druing a regular call?
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Click to collapse
Regular call is impossible, as I have no cellular network at all. Wifi works fine. I am currently unable to try another SIM, as I'd have to cut a microsim out of a regular one and people around don't want to have their card cut up.
The sim works fine in my old nokia though, so I don't think that's the issue.
I'll try to find a friend with an iPhone 4 to try their microsim, but I'm not really counting on it.

[Q] phone turn off when sim inserted

Hi. i have unlocked Sony Xperia Ion LT28at.Was using it for couple of months but recently phone start shutting off, first battery lower than 30% but now even with 100%. Found out that it only when tmobile card is inserted. Tried my wife's card ,the same. without card phone still works and also when I inserted att card .I also just did factory reset Like I said phone worked perfect until like a week ago.
I just make factory reset and tried to play with the phone with different sims i collected over years. It works perfectly with Orange, Play,Cingular,ATT sims, but when I put old prepaid tmobile, it is shutting off again.

latawiec said:
Hi. i have unlocked Sony Xperia Ion LT28at.Was using it for couple of months but recently phone start shutting off, first battery lower than 30% but now even with 100%. Found out that it only when tmobile card is inserted. Tried my wife's card ,the same. without card phone still works and also when I inserted att card .I also just did factory reset Like I said phone worked perfect until like a week ago.
I just make factory reset and tried to play with the phone with different sims i collected over years. It works perfectly with Orange, Play,Cingular,ATT sims, but when I put old prepaid tmobile, it is shutting off again.
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Click to collapse
Old sim's do that. They short circuit your phone, because they are old. Don't use it, or change it with a new one.

zupadroid said:
Old sim's do that. They short circuit your phone, because they are old. Don't use it, or change it with a new one.
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Click to collapse
It may be so, but the same sim card work without the problem in another phones and the 12 year old cingular card does does not cause the problem, only tmobile cards. My daughter card is like a year old and it is causing shut down also.

latawiec said:
It may be so, but the same sim card work without the problem in another phones and the 12 year old cingular card does does not cause the problem, only tmobile cards. My daughter card is like a year old and it is causing shut down also.
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Click to collapse
Call tmobile and let them know about the sim problem.

Someone says that it is a "safety" measure built in the system.
I'm not sure about that though.

Ok right now I reflashed the phone with current firmware, there is no programs installed. tried old sim cards from Orange,cingular, ATT and one more company I think Play, all works with the phone no shutting down. Then I tried my old prepaid Tmobile then my daughter's and my wife's tmobile cards all of them are shutting it down within a minute. I am using replacement unlocked samsung and have no problem with my sim card , same my wife's tmobile samsung and my daughther HTC oneS. Have only problem when I want to pair sony ion with any tmobile sim.

Try to disable the PIN CODE just for a few minutes. See what that goes.

zupadroid said:
Try to disable the PIN CODE just for a few minutes. See what that goes.
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Don't know exactly what a pin code is, but just re-flashed the phone to LT28i, did not helped. phone still shutting off.

I had the same problem too.This worked for me:
1.Open your phone without sim
2a(Ice cream Sandwich):Then Go to the settings->more->mobile networks->Network mode or 2b(Gingerbread) Settings>Wireless and networks>Mobile networks>Network Mode
3:And change network mode to WCDMA only(this worked for me).
4:Insert your Sim and restart your phone
If "WCDMA only" doesn't work you can try "GSM" only.
Old thread but I hope someone else gets helped by this.

For everyone
if it still interests you, I have a simple solution that works for everyone

Please tell us!
kaderlg said:
if it still interests you, I have a simple solution that works for everyone
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Please tell us kaderlg! =)

my proposal
Gustmi said:
Please tell us kaderlg! =)
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I'm not sure at 100% that it ll work for u but i personaly tested it and worked fine
so you just have to activate the pin code on security and location setting
but the SIM card must be inserted to activate the pin code
If you never activated the pin code, then the default code must be 0000
if the phone turn off before u get acces to the setting menu so u have to
- boot without the sim
- turn on flight mode
- power off and insert the sim card
- boot with sim
- after this follow the above instructions
- reboot and after u enter the pin code turn off flight mode and see if the phone shutdown or not
- if it shutdown try to go back on setting and set mobile network to use gsm only
if u don't understand reply !
I hope it work for u

Is there any solution to this problems? Previous suggestion is not work..
- When insert sim card, the phone will shut down when try to search the network.
- The phone will not shut down if switch on without sim card
- But if the phone was connect to the charger, it can switch on with the sim card.
I don't think the battery is bad...

mohdikramj said:
Is there any solution to this problems? Previous suggestion is not work..
- When insert sim card, the phone will shut down when try to search the network.
- The phone will not shut down if switch on without sim card
- But if the phone was connect to the charger, it can switch on with the sim card.
I don't think the battery is bad...
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Click to collapse
I just realize that, the problem is went want to search th 2G (GSM network). My area did not have 3G (the phone have poor 3G reception). So, the phone need to be in 2G mode, so it keep going shut down.

The problem is simple. The battery contacts need to be cleaned. Use a cotton swab, damp it with rubbing alcohol and clean the battery contact on both the battery and of the phone. The rubbing alcohol is safe for the metal contacts. Install the battery back and turn the phone on. This took care of in my case. Avoid touching these contacts as they're sensitive.

Amazing workaround!
ariss1986 said:
I had the same problem too.This worked for me:
1.Open your phone without sim
2a(Ice cream Sandwich):Then Go to the settings->more->mobile networks->Network mode or 2b(Gingerbread) Settings>Wireless and networks>Mobile networks>Network Mode
3:And change network mode to WCDMA only(this worked for me).
4:Insert your Sim and restart your phone
If "WCDMA only" doesn't work you can try "GSM" only.
Old thread but I hope someone else gets helped by this.
Click to expand...
Click to collapse
Amazing! This is a great workaround. The reason is actually batteries getting faulty. I moved to 110V country from 220V and used a voltage transformer in front of adapter to charge the phone. It did something bad with the batteries. Though phone works fine when on charging- no shut down. It shuts down only when I try to place a call. Also I now charge it via laptop usb and disabled the fast charging and I think that also made batteries a bit better as phone is not switching off that frequently as it used to be. So also see how u are charging the batteries

DINC2 unlocked but doesn't recognize SIM in Panama...help!!!

hi. i just got this phone in the states before coming down to panama. it is verizon, but i called them and they gave me the code and now the phone is unlocked....but i can't get coverage here in panama. i've tried sim cards from a few of the local operators and none of them seem to work. i sure hope someone can help....here's what i've done so far: (oh, pls b patient, i'm a bit of a technophobe)
-unlocked sim. phone gives me sim lock is disabled message....that means i'm good to go, right/
-set phone to gsm only mode.
-software is androaid version 2.3.4
verizon global services told me that everything was as it should be and that the phone should work w/ a local sim card so i'm not really sure where to turn to......hopefully someone here can help. verizon also told me that the phone should work on the frequencies here. i have a claro sim card, but have also tried movistar, digicel, and masmovil. i was told that they use either 850 or 1900.
so, i'm totally stumped. hopefully i'm missing something stupid....btw, tried the sim in other phones (from europe and panama) and it worked w/ them. don't think it's a hadrware problem, but am i missing something? is there a setting change? do i need some kind of software update?
thanks!

update- get cell phone reception w/ gps on
don't know if this will help anyone get to the bottom of this issue, but i realized that when i have the gps on, i get full bar coverage. unfortunately, i can't leave the app on in the background. this makes me think it could be a hardware issue....bad antenna? anyone have any ideas

Same problem
I have the same issue as OP. Got my phone sim unlocked, and it runs on SenseMOD-2012-05-18-225643 Android 4.0.4.
For once I did a factory reset, skipped verizon activation (can´t do and won´t work because I´m not in the USA and do not have a verizon SIM or service), set my network preference to GSM/WCDMA, and the network wasn´t working.
Rebooted, my network is identified as soon as it starts, but then it goes to "No Service". Try to search for network but my carrier does not appear.
Any help?
EDIT:
Playing around with the phone, setting GSM as your network and restarting the phone let me make phone calls. No internet though and the APN was configured correctly. The "E" symbol for the internet blinked once in a while, but never got service.
Also, playing around some more, got my phone to not recognize the network again by removing the SIM another time. This sucks.

Works with Telcel, not with Movistar

Ok, so I've been searching all over the forum about the issue I'm having but I'm still not sure of what I can do.
I got this T999L recently, the phone is apparently unlocked (or so I was told and I don't know what method was used) and able to be used in Mexico with Telcel and Movistar. The phone has baseband UVUBMK4 however no IMEI (if I enter *#06# I get " /02").
Now, when I put a Telcel SIM it works fine right away, calls, msg, 4g data, BUT if I put a Movistar SIM it looks like it reads it as I get the carrier SIM services app and I get full bars, but there's no network, no 4g, no calls (not registered on network) and if I go to the mobile network settings I get "Insert sim card to access network services".
Does this make any sense? is there anything I can do?
I'm sorry if I asked something that was posted before, I really tried hard finding an answer in the forums but couldn't find any.
Thanks in advance

Could replacing the SIM fix the issue or does it sound like nothing to do with that?