903sh can't make calls on 900mhz
 

i unlocked a sharp 903sh with cruiser phone is unlocked and finds network but can't make calls on 900mhz. i flashed with european flash but phone still can't make calls on 900mhz. phone works without any problems on 1900 mhz. how do i fix this?

Are you shure that phone is not "barred" on specific operator ???
If so you must change IMEI !!!
:)