Nokia N8 sim card problem please help!!

Question

I have been the proud owner of a Nokia N8 for about 9 months now without any problems or issues jus some random bugs...since N8 is a troubled device as we all know. But anyways jus now it has come up with lots of issues...at first my phone started to restart as soon as the phone started up. Even before all the apps loaded up and i tried around 15 times to switch off and start and stuff. But to no avail...so i went on some forums and blogs and got some tips like resetting it by holding down the power button for 8 secs and everything but still the same problem. Now, I removed my sim card and put in a different one and VOILA it worked!!! No restart so I thought maybe the older sim was faulty. but as i put the old sim in another phone...it worked in that phone! I was dumbfounded as the sim was working on my n8 before toO! ......so i just ignored it and i used the other sim in my n8 but not for long after half an hour the phone was not starting up sim card or no sim card. so i flashed my phone to the official Symbian Anna and i tried booting up without a sim card and the phone works properly. but as soon as I put in the sim card and switch the profile to normal mode..the phone freezes for about 5-6 seconds and reboots only to find my phone in offline mode again and same problem. I have tried changing sim cards nd memory cards, reset, reflash, format the mass memory, and everything else possible but in vain. The problem still exists!! Can anyone please help me as Im very fond of the phone and I dont want to send it to the service center as they would come up with some lame excuses + i hav lost my warranty card!! Please help....and btw the phone works flawlessly without a sim card! And also, in offline mode when i switch on the bluetooth...the phone freezes and restarts! Evn the WLAN keeps on searching for network and doesnt find any even though there is! Any help would be appreciated... thank you!

Answer 1

Just want to say "I dont have my warranty card"
No official Nokia care point will say this as they can check the warranty satus online using your IMEI number- if they do not do this, either insist they do or report them to nokia care direct and lodge a complaint. (0845 045 55 55 from the UK)
Even if the warranty has expired online, this can be extended if you can provide a proof of purchase date. This can be a delivery reciept if you bought online, or your high street retailor will be able to provide you with a copy if you ask them- even your original service agreement should be enough. Remember you get a full 2 years warranty with all Nokia handsets. 
Nokia Care are there to help, not to make things difficult for you. They go through untold amounts of training to ensure you get your handset back as soon as possible in a fully working order. 
I feel bad you feel such reluctance to contact a care centre, Nokia have gone to massive efforts to provide consumers with this kind of readily available support. 
If you are in the UK and your local care centre is not helping you I would suggest you call the one i use, they will give you all the advice you need 01242 539539 (i hope giving out this info is ok on the forums)