Hello friends,

I have rebooting issue with my Bold9000 on both 5.0.0.592 and 5.0.0.900 OSs, it unexpectedly reboots while dialing, not always but sometimes, all this happened when i was in subway, i'm not sure if it's caused by weak signal, somebody said software issue, others said CPU or battery issue, i'm really confused now and don't know what to do to solve it, anybody can help me?
Thanks in advance!