so i have the exh9ibit for tmobile & i'm trying to put contact icons but it won't let me. everytime i go to contacts & edit it... all it shows is the name, number, and email. but when i noticed that some of the contacts were "tmobile" or whatever i was able to edit them completely. now i don't know what to do. how do i convert my contacts from my sim card to the tmoble thing?