My Samsung Galaxy S2 doesn't recognize my SIM-card anymore. I can't make calls or use (3G) internet.
Problems started after my phone was unresponsive while trying to pick up an incoming phone call. I had this before, but this time I shut down my phone with the power button. I can't make phone calls ever since or use (3G) internet. At first I could use wifi, but after a hard reset to factory defaults and a cache wipe I couldn't use wifi either.
If I look under 'About the Phone ... Status' (not completely sure what the English version exactly reads) it does not show the IMEI or IMEISV, nor the Wi-Fi MAC-address, nor the Bluetooth-address. The Wi-Fi MAC-address was shown before the reset to factory defaults.
I can't access my phone with (the freshly installed newest version of) Kies, although the 3 drivers install correctly (under Windows 7) when attaching my phone to my PC. I can access the phone via USB (and Windows Media Player).
I tried 2 other SIM-cards. They had the same problem. My own SIM-card works in another (older Nokia / non Smart) phone in the sense that I can make phone calls with it.
My phone has not been rooted.
Android version: 2.3.5.
Any help and solutions to this problem are much appreciated!
GvDam said:
My Samsung Galaxy S2 doesn't recognize my SIM-card anymore. I can't make calls or use (3G) internet.
Problems started after my phone was unresponsive while trying to pick up an incoming phone call. I had this before, but this time I shut down my phone with the power button. I can't make phone calls ever since or use (3G) internet. At first I could use wifi, but after a hard reset to factory defaults and a cache wipe I couldn't use wifi either.
If I look under 'About the Phone ... Status' (not completely sure what the English version exactly reads) it does not show the IMEI or IMEISV, nor the Wi-Fi MAC-address, nor the Bluetooth-address. The Wi-Fi MAC-address was shown before the reset to factory defaults.
I can't access my phone with (the freshly installed newest version of) Kies, although the 3 drivers install correctly (under Windows 7) when attaching my phone to my PC. I can access the phone via USB (and Windows Media Player).
I tried 2 other SIM-cards. They had the same problem. My own SIM-card works in another (older Nokia / non Smart) phone in the sense that I can make phone calls with it.
My phone has not been rooted.
Android version: 2.3.5.
Any help and solutions to this problem are much appreciated!
Click to expand...
Click to collapse
You can hope that it isn't a hardware problem and try to Root your phone and flash a custom ROM and see if the problem still is there.
Cleaning the SIM slot maybe is also worth a try.
Related
I installed new version of ROM from official HTC website and wifi is not working anymore. What to do?
dejandoc said:
I installed new version of ROM from official HTC website and wifi is not working anymore. What to do?
Click to expand...
Click to collapse
If the flash was successful, then try a hard reset as first. (Don't forget to save your data, because all of them will be erased on your phone, except mSD card). You can read about it here point 15th.
Good luck!
i flashed the old rom back to (2.13.531) then lost the wifi on/off (greyed out), then did a hard reset as suggested. the wifi on/off is no longer greyed out, and the wireless networks are showing available (my home network) but 'connecting' msg keeps 'circling around,, and not connecting like before.
thanx, verso72
After a normal reboot of my phone, it suddenly doesn't read my sim card anymore. When I turn it on, I'm not asked to enter the pin code and the phone doesn't connect to the network.
If I go into settings and change the pin code, or turn it off, I'm asked to enter the original pin code, so in that way there's still a connection to the sim card.
When I've done any of the above, the sim card seems to been "activated", and the phone connects to the network, and everything is as it should be until the next reboot. Then I manually have to "activate" the sim card again.
The phone has worked without any problems for a long time with the current CyanogenMod 9 custom rom and my current provider, and I haven't changed anything that suddenly can cause this.
Some suggestions to what can be wrong?
Does the sim work with other phones ? If so, it probably isn't a problem with the sim. In that case, try a factory reset in the first instance.
If that fails to work, try a fresh/clean install of CM9. If that doesn't work, reflash a Gingerbread stock rom & see if the problem persists. If the problem persists with a GB rom, then it's likely to be a sim/hardware issue.
The other thing that comes to mind is have you flashed a recent CM9 nightly ? This might explain it working OK previously with CM9 & not working now. Obviously CM9 is beta, and something funky might be going on with a more recent build/nightly.
I've now finally managed to find another phone and another sim-card.
My own sim-card works fine in the other phone - and when I put the other sim-card in my own phone it doesn't ask of the pin-code and it doesn't connect to the network.
So I believe my phone needs a complete reset - when I've got the time to do it...
One strange thing is, that at one reset earlier this week my own phone asked for the pin-code - but only once...??
I think I've found the problem. Either it's caused by Avast Anti-Theft alone or it's a combination of Avast Anti-Theft and CyanogenMod 9.
I believe it's the last one, because everything worked fine during the first time I switched from stock ROM to CM9, but then suddenly the error with the pin-code occured, and I could be caused by an update in the CM9 version.
But when I restored factory settings on my phone and started again from zero, everything was okay, and I was promted to enter my pin-code. It was the same when I restored my apps and data with Titanium Backup, but then when I installed Avast Anti-Theft the error occured again.
Actually I restored my phone once again just to make sure, and it was the same - when I installed Avast Anti-Theft, I was no more asked to enter the pin-code and the phone did not connect to the network.
So now I know what's wrong and maybe also why - but I don't know how to solve it...!?
Hi All,
I ahve a problem with my SGS3 GT I 9300 Android 4.1.2. I cant connect to any Wifi. When I try to connect I get the message "Authentication error". The router has WPA2 encryption. Even when I setup the router with no encryption it gives this error.
What I did before:
I have had another SGS3 with the same Software on it and wanted to make a nandroid backup to the new SGS3. This worked fine and everything was good except the wifi.
I already tried to connect with adb shell to kill wpa_supplicant but also with no success.
I am out of ideas what I can do. I dont want to wipe the whole phone again and setup everything.
Please help!!!
I am out of ideas what I can do. I dont want to wipe the whole phone again and setup everything.
No then you could try just flashing a kernel via Odin .
What I did before:
I have had another SGS3 with the same Software on it and wanted to make a nandroid backup to the new SGS3. This worked fine and everything was good except the wifi.
Answer has to be wipe the phone you transferred the wifi problem .
jje
I wiped the phone and now the wifi is working again.
Hi, I'm having a curious problem with my S3 and I've been unable to solve it. I watched the "noob" video and tried searching these forums as well as a google search with various combinations of the wording for my problem. Nothing matching my issue turned up, I hope I didn't miss anything.
I recently bought a S3 second hand (yes, i know, i should have known better). It was rooted and running some kind of custom ROM when I first turned it on, but I was willing to deal with it until I double checked the procedure for getting it back to stock and starting again myself (nothing against the original rooting and flashing, just like to know exactly what I'm running).
When I purchased the phone I obviously checked that all of the main things worked - calling, texts, mobile data, wi-fi etc. I get home and connect to my home wi-fi and start checking things out and setting stuff up. The phone randomly rebooted. I carry on after the reboot and about 10 mins later, another restart.
To cut a long story short, there is something wrong with the wi-fi. If I turn off wi-fi in the settings menu and reboot, everything works great. No crashes, no reboots. If however I enable the wi-fi about 50% of the time it will crash while wi-fi is activating. The other 50% of the time, it will crash as it goes into the screen lock (either via timeout or pressing the button).
I've re-flashed to it's stock version of Android (using the 'Samsung GS3 Toolkit and Odin), same problem. Anyone got any ideas?
Thanks in advance
You can try updating the modem and RIL to the right version for your country, search in general forum. If it still reboots then try with another wifi source - I've seen some routers cause problems on client machines.
If you do a factory reset when you flash the modem, plus you have the latest stock ROM on board, then any remaining problems are probably hardware.
Test it fully after the factory reset, before you add any apps etc.
boomboomer said:
You can try updating the modem and RIL to the right version for your country, search in general forum. If it still reboots then try with another wifi source - I've seen some routers cause problems on client machines.
If you do a factory reset when you flash the modem, plus you have the latest stock ROM on board, then any remaining problems are probably hardware.
Test it fully after the factory reset, before you add any apps etc.
Click to expand...
Click to collapse
After much experimentation and flashing of various files to my phone I have further narrowed the problem. I've still not solved it, but getting closer I feel.
After a clean ROM flash it works like a charm regardless of how much i use the wifi etc. It's only after the first reboot that the trouble starts. It will begin randomly restarting. If I perform a factory reset from recovery mode, it works again, but starts resetting again after a reboot.
Any ideas?
My GF's phone - just bough used - after some time started having trouble with wifi. It just won't turn on. No connection issues, just the wifi function doesnt want to start.
We did factory reset then another from that boot menu including cashe wipe but no result.
Android is 4.1.2 (that neweest official i think) and theres the following message "kies does not support initializing" so not possible to reflash from Kies ? Usb debugging was enabled
Do you think it will be possible from that Odin (never used it before) ? Will it void warranty or any risk if I want just the official rom for her ?
If not it looks like I will have to return for warranty repair ?
Thanks