who flashed your phone?
when you dial ##778# and press edit, is you code 000000 or 333333?
did you enter username as
5556461234@mycricket.com without leadin 1 or hifens (-)? with your correct phone number
password cricket, not Cricket, or CRICKET
start/settings/connections/connections/advanced are both set to cricket?
in reg edit under hklm/software/arcsoft/arcsoft mms ua/config/mm1/mmscsettings/samplemms (or if named cricket, or default)make sure waptype is set to 1
if all else fails, slam on floor, and kick accross room to show it whos boss
