I have the 8130 model and can't seem to figure this one out. Every so often my SMS messages and call history is deleted. I just went to look at text messages that I sent earlier today and they are all gone. Then while on the phone with someone else I received a call, but didn't answer it. When I went back to look at the missed call there were no calls in the recent call log. I have not turned the phone off so I didn't lose them that way. Is there a setting on the phone that I can change to keep from losing these messages. Any help would be greatly appreciated so I can stop losing important messages and phone numbers! Thanks!
This is a common problem... and it is caused by low memory. Your Berry will auto-delete "stuff" (messages, etc) once you drop below about 10,xxx,xxx bytes of free memory.
Check out the Memory Optimization Procedure in my signature!