I bought my Samsung Galaxy S since November last year and have been using since then. Some days ago, i noticed that my phone started behaving funny. First, it will just shut itself down and start to reboot again, sometimes without touching the screen, it starts operating by itself without control.Just yesterday, after charging it the battery and it was on full charge, it started shutting down again and this time for very long periods of time, and sometimes it comes up, but the screen is totally black and u cannot see anything on the screen.
The few times it has come up, it has been requesting for" Sim Network Unlock Pin"
Can someone help me here?
As it is right now, i cannot use the phone, because if it comes up at all for few minutes, it does not sense my network sim card that i have bee n using on it anymore.