hi, I turn on my 6600 and it works perfectly (sms, mms, camera, video, calling, etc..) during a few hours, then the phone turn off, or the display gets black and then turn it off by itselft. Once time appeared "closed msvserver"
to turn it on again I've to press several times.

I read something like this in other topic, (tried to turn it on without memory card, replacing the battery,....) but doesnt work....

Thanks (and sorry for my english)