So I have an unlocked Rogers Blackberry 8900 (In Canada) and I have it unlocked and I am using a FIDO sim card. I got it 3 days ago, and It worked well for the first day. Then yesterday it lost contact with my SIM and said "Please insert SIM" and "SOS" where the signal connection usually is. It lost contact with the sim for about 2 hours and then worked for the rest of the day. Today it worked when I woke up, and then about 5 hours ago it lost contact again with the sim saying "Please insert SIM" and "SOS" again.
Is this a problem with the unlocking? Or could it be a problem with the sim? or a hardware problem with my Blackberry?
Please any help would be greatly appreciated as I am a new BB user, but I really love my BB.