i got a new BB 7290 with no labels on it (cingula or AT&T) from Cingular through my job< when i powered it up it didn't have a cingular or AT&T logo displayed just the blackberry logo. I tried to insert a voice-sim card from TMoblie but it said invalid sim, an AT&T sim card works just fine>
The question is, what's the quickest way to check in the device at to whether it is carrier locked???
OK, what if you do not have another SIM to test? I used to work for HP and had my AT&T account transfered to the business side. When I got my BB 7290 through AT&T, mine does not have any tags either. Is there another way to find out besides calling them?