my phone is a sony ericsson k550i and nagtext ko internationally using a touch mobile sim and i was in manila doing that. it was ok at that time. then pagbalik nako sa cebu the next day mu fail naman every time i try to text abroad. then i tried using a different sim, this time globe, mao ra man gihapon. but when i tried using the sim in another celphone and texted internationally ok man cya makasend man diretso. wala man sad ko giusab na settings sa akong phone. unsa may guba ani niya? pls help!