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phone lost signal

hi
I upgraded to helmi 3.5 last week, all run good untill yesterday when the phone lost signal, it just has a '!' next to it i've tried soft and hard reset but still same problem. i've checked the wireless manager which says phone is on. does anyone have any idea how to solve this.would flashing the radio or rom again solve this
thanks

Try booting up without a sim card, switch the phone on and off again once or twice in Comm Manager, then put your card back in.

tried that but no luck. in the phone settings it says 'no service' do you think the radio has failed or possibly it needs sim unlocking again

"No service" suggests that the phone itself is on and not seeing anything. Otherwise you'd be seeing "Phone off". Have you tried any other sim cards, or even giving your own a wipe?

You could be having the same problem as the one in http://forum.xda-developers.com/showthread.php?t=289761 ?

solved
thanks guys for trying to help i just updated to xplodes rom and now works fine but thanks for the advice it was much appreciated

[Q] [SOLVED] Sim card not detected

I tried installing http://forum.xda-developers.com/showthread.php?t=2578828 and it said that installation was successful but when I started the phone I had no service. I tried manually searching for networks but I got a "Unfortunately Settings has stopped working". I had a backup right before installing this but there was a problem with it and couldn't restore. I tried factory reset but now I just get a "Unfortunately phone.android.com proccess has stopped working" when I start the phone and the Settings crash whenever I try to do something and still sim card is not recognized. I tried it on a different phone there was no problem. I am thinking about reseting with CWM but I am hoping you can help me before I do that.

I had the same try taking out your sim and clean it that did it for me
EDIT: does it work when you remove the mod?
Sent from my C5303 using xda app-developers app

Just tried it but didn't help.
Actually when I remove it and insert it while the phone is on it says "Sim card removed" or "Sim card inserted" and then restarts.
I tried removing it but same thing.
And after I did the factory reset I thought it would delete the mod but it didn't help.

Get a new simcard.. This will solve the problem (most of the time)

I'm not sure if it will fix it. I tried my sim card on a different phone and it was working fine. I tried a sim card from a different carrier and it still wasn't working on my phone.

Normaly a new one does not cost anything so it is worht a try. If its still not working then I suggest you let your phone be repaired.

Normally they don't charge but in my country they do....
That's why I prefer to try repairing it myself and as a last resort to give it to someone....
Still trying to figure out how to though... I'm thinking of trying to go back to stock rom and see if that helps or install CM10 or 11...
Will write again after my tries.

Well I couldn't find what exactly was doing the problem but I found a solution. I repaired my phone with PC Companion and everything is fine now...

[Q] No Service/No contacts?

So this is my first time rooting/flashing so I'm not a pro at what I'm doing but I wanted to give it a try
Anyway, so I rooted my S3 Mini with Unified Android Toolkit and backed up apps etc. Then installed CyanogenMod on my phone. Everything is okay except for 2 issues.
1) I haven't got any SIM Contacts, were these deleted when I wiped the phone and now I can't do anything about it?
2) I see 'No Service' on my phone when I bring the toolbar down from the top of the screen. See this is weird because I have service and am using the internet, but I don't actually have a registered network. I went to network providers, scanned and tapped my network, but even then, there was no change. I am running a UK S3 Mini on baseband ...XXAMJ2 and Installed Jellybean 4.1.2 (CyanogenMod 10) 20130727 from Maclaw'NovaFusion
When I rooted with the Toolkit, I chose the option [Up to ALL7] if that makes any difference?
Is there any way I can see which network I'm running because I'm confused and was gonna just flash the stock rom and unroot...
Thank you
P.S Also just checked in About Phone and my Network/Service Status comes up there, and my mobile data works, but it still says No Service when I bring the top toolbar down?!

suthi4lyfe said:
So this is my first time rooting/flashing so I'm not a pro at what I'm doing but I wanted to give it a try
Anyway, so I rooted my S3 Mini with Unified Android Toolkit and backed up apps etc. Then installed CyanogenMod on my phone. Everything is okay except for 2 issues.
1) I haven't got any SIM Contacts, were these deleted when I wiped the phone and now I can't do anything about it?
2) I see 'No Service' on my phone when I bring the toolbar down from the top of the screen. See this is weird because I have service and am using the internet, but I don't actually have a registered network. I went to network providers, scanned and tapped my network, but even then, there was no change. I am running a UK S3 Mini on baseband ...XXAMJ2 and Installed Jellybean 4.1.2 (CyanogenMod 10) 20130727 from Maclaw'NovaFusion
When I rooted with the Toolkit, I chose the option [Up to ALL7] if that makes any difference?
Is there any way I can see which network I'm running because I'm confused and was gonna just flash the stock rom and unroot...
Thank you
P.S Also just checked in About Phone and my Network/Service Status comes up there, and my mobile data works, but it still says No Service when I bring the top toolbar down?!
Click to expand...
Click to collapse
For the SIM contacts: Try to pop in you SIM to an old phone and check if the contacts are still there, if yes good, if no... my condolences.
I strongly recommend to switch to CM11, it's working just fine, with no major bugs or problems. Well, i'm using it and i'm very picky when it comes to bugs and other issues.
The point is, you have to re-flash you phone anyway and along the way, you can update to a better android version.
Details about the CM11 TWRP (http://novafusion.pl/2014/06/14/release-cyanogenmod-11-0-s3-mini-180/)
Guide on how to do it (http://novafusion.pl/tutorials/installation-guide-golden/)

BrainInBlack said:
For the SIM contacts: Try to pop in you SIM to an old phone and check if the contacts are still there, if yes good, if no... my condolences.
I strongly recommend to switch to CM11, it's working just fine, with no major bugs or problems. Well, i'm using it and i'm very picky when it comes to bugs and other issues.
The point is, you have to re-flash you phone anyway and along the way, you can update to a better android version.
Click to expand...
Click to collapse
With switching to CM11... I'm currently on 10 because my S3 was running 4.1.2 originally, if I were to flash the 4.4.2 rom, would it work and be compatible? Sorry if it seems like a basic question, I'm not really that knowledgeable about this
EDIT: Just did this, worked wonders! Thank you!

Phone doesn't read my SIM

I have been using CM11 (14-03-2014 I believe), without major problems until yesterday. Sometimes my phone seemed to disconnect from my SIM and I had to re-enter my pin code to reconnect to my operators network. But as of yesterday my device doesn't seem to recognize the SIM card, It doesn't ask for a code at all and can't make any connection whatsoever. I didn't change a thing, this problem started out of the blue.
I wiped cache and dalvik, updated to the latest CM nightly (08-05) but that didn't make any difference. In other threads I read about the baseband that might need an update, but I can't check which version I have now because when I try to enter the hidden menu I get the no network connection error. The strange thing is that CM11 has worked with (I guess) the stock baseband.
Is my phone tripping or could it be that my SIM card is broken?
Help and thoughts will be very much appreciated

Try it on stock to be sure about it.

After some searching I found a phone that could fit a regular SIM card, a Blackberry 9900. My SIM worked perfect in this phone, so that is not the problem.
I Also did a complete wipe and installed a stable version of CM 10.1.3, but that didn't seem to help. I hoped that a downgrade would have done the trick. I might try a ICS ROM or the stock firmware, but I kind of lost hope and i'm starting to think this problem is hardware related in stead of software. I'll report back with results on stock firmware and the ICS ROM.
How can I make sure the SIM reader in my phone is working properly?

Sorry for double posting, but I got an update:
SIM wasn't working with ICS so I decided to go back to the stock ROM. However, when I tried to flash V20B.kdz with KDZ_FW_UPD, the program got stuck at wParam=2010 and iParam=210. The phone is now stuck in S/W Update mode, and I haven't found a way to restore it yet. I will argue a little more with my phone when I get back from work, I'll open a new thread on how to unbrick when I can't do it myself.

Beunhof said:
Sorry for double posting, but I got an update:
SIM wasn't working with ICS so I decided to go back to the stock ROM. However, when I tried to flash V20B.kdz with KDZ_FW_UPD, the program got stuck at wParam=2010 and iParam=210. The phone is now stuck in S/W Update mode, and I haven't found a way to restore it yet. I will argue a little more with my phone when I get back from work, I'll open a new thread on how to unbrick when I can't do it myself.
Click to expand...
Click to collapse
My good friend i know i probably come 2 late but here is the anser 4 future users!!
http://forum.xda-developers.com/showthread.php?t=2069723
its supose to freese in ther!! (not ther but ....)

I have the same problem, and exactly the same error at reflash.
Dead end. Buy a new phone .
I tried to flash it about 80 times. One guy from a gsm repair has a bit luck and make it work at the first, but then, when he wanted to repair my imei, the phone stucked again in S/W Upgrade.

[Q] Xperia Z c6603 Sim card not detecting problem

Hello Friends,
I am sorry to create this thread if already a discussion going on under the same topic( I am that much frustrated as well as desperate). I updated my set to 10.5.1.A.0.292 few weeks back & when it reboot I get a popup window saying nfc firmware update error 000004 which is present till the date. Then it starts a new issue like loosing the signal and reinserting the sim card rectifies the issues at first. Few days back it completely lost the signal & a sign appeared on top right corner like a red "X' mark with sim card.I tried to reinsert the sim and when I does the set shows 'sim card inserted , restarting' but after reboot again no signal, when i removes the sim again it popup as 'sim card removed, restarting'.
I tried many other sim cards. Result is same though all are working in other phone. I tried every thing starting from factory reset to flashing using PCC as well as Flash tool but still the problem persist. When I flashed CM 11 and searched the set shows all the available networks ( Though no signal was showing in status bar) but fails to register in any of them. Any idea what happened to my set and is it curable. Please help it doesn't have warranty.

[email protected] said:
Hello Friends,
I am sorry to create this thread if already a discussion going on under the same topic( I am that much frustrated as well as desperate). I updated my set to 10.5.1.A.0.292 few weeks back & when it reboot I get a popup window saying nfc firmware update error 000004 which is present till the date. Then it starts a new issue like loosing the signal and reinserting the sim card rectifies the issues at first. Few days back it completely lost the signal & a sign appeared on top right corner like a red "X' mark with sim card.I tried to reinsert the sim and when I does the set shows 'sim card inserted , restarting' but after reboot again no signal, when i removes the sim again it popup as 'sim card removed, restarting'.
I tried many other sim cards. Result is same though all are working in other phone. I tried every thing starting from factory reset to flashing using PCC as well as Flash tool but still the problem persist. When I flashed CM 11 and searched the set shows all the available networks ( Though no signal was showing in status bar) but fails to register in any of them. Any idea what happened to my set and is it curable. Please help it doesn't have warranty.
Click to expand...
Click to collapse
does it work for CM11? maybe there is something wrong with your hardware, check what does it display on baseband, maybe try a reflash once again.

Zenns said:
does it work for CM11? maybe there is something wrong with your hardware, check what does it display on baseband, maybe try a reflash once again.
Click to expand...
Click to collapse
Hello Zennis thanks for the reply. I tinstalled cm 11 on it and then also there is no signal bar in the status bar but under mobile operator option i was able to check the network and all the available network were showing there but when i tried to connect my service provider it failed. I dont think there is a hardware problem coz i use it that much careful and hardly 5 minutes before this issue i attended a call.
Looking forward for your valuable reply.

I think its a baseband problem.... I previously faced problem like no signal,no imei,no wifi, etc...then i flashed different version of stock .ftf
And my problem was solved.
Sent from my C6602 using xda app-developers app

I solved the issue
r.ifat381 said:
I think its a baseband problem.... I previously faced problem like no signal,no imei,no wifi, etc...then i flashed different version of stock .ftf
And my problem was solved.
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
Hello friends,
At last i was able to solve the problem. How? I will explain..
1, Read this thread'www DOT mashinie DOT com/trick-to-create-sony-stock-ftf-rom.html '. Thanks a lot to this person to create it.
2, mind, to see the folder "Program Data" you should enable the view hidden folder option in window
3, I made a ftf bundle as per his guide and flashed it. Wola it succeeded:good:.. Now I am using my set without a hitch for last 48 hrs.
4, MY NFC firmware update failure is not cured although but i am not bothered about it..
Thanks for all for the support

[email protected] said:
Hello friends,
At last i was able to solve the problem. How? I will explain..
1, Read this thread'www DOT mashinie DOT com/trick-to-create-sony-stock-ftf-rom.html '. Thanks a lot to this person to create it.
2, mind, to see the folder "Program Data" you should enable the view hidden folder option in window
3, I made a ftf bundle as per his guide and flashed it. Wola it succeeded:good:.. Now I am using my set without a hitch for last 48 hrs.
4, MY NFC firmware update failure is not cured although but i am not bothered about it..
Thanks for all for the support
Click to expand...
Click to collapse
This didn't solve my problem, which is exactly the same as yours. Any other solutions???

puneet0009 said:
This didn't solve my problem, which is exactly the same as yours. Any other solutions???
Click to expand...
Click to collapse
Hi puneet its sad to know that you too are in same situation. As I said in my post the unit was functioning for about several weeks and suddenly it fell into no network state again and this time all my trials went vain. I just sold that unit at a cheaper price to a mobile repairing shop. i dont know what they have done with it. In my opinion dont waste your energy for xperia crap.
Thank you & sorry that i cant help you.