I have the 8310 and I've recently been having problems.. I've had a bberry for years and never had problem w service..
Now, I'm stuck in GSM most of the time, or edge. Once in a while it will go to EDGE.... but even when in EDGE it wont send pins. It will give the little clock beside it.. a few mins later my phone will beep and it will show the red X.
Ocassionaly when in EDGE and pins seem to be working, I will click reply to a pin, type in the msg and click send. Right away it will come back w a big red X. So, I check the msg and it will say Invalid Pin. I click show address and it wont.
I go in to my address book and open that persons name, and their # email, pin and all info will be gone, its blank. But it will come back after a few mins of being left alone ..
I've tried taking battery out, been on phone w provider many times ...
Now, I think I have narrowed it down that it only acts like this in my house... but like I said i've had a bberry for year and have always had service, my wife and I are both w Rogers, and she has no problems w service.
Could it be some sort of interference in my house?
Its a work phone and some functions are disabled, bluetooth, internet, email etc. All we have is pinning and phone.