No Service?

[keebokhullaby]

i just recently bought a 6700 and flashed it to cricket
at first the phone was working fine, but now when i try to make a call it just shows "call ended". and when i tap on the little phone icon (the triangular thing) it says no service. any ideas on whats wrong?



Edit: now when i make a call, it says "cannot complete call the call. The signal may be unavailable or the phone number may be invalid. Verify the number or try again later."
????