I can comment on this. My wife is on tmobile and my father is on ATT, both are using prepaid phones with swapped SIM cards. I know the Virgin mobile phones don'

I can comment on this. My wife is on tmobile and my father is on ATT, both are using prepaid phones with swapped SIM cards. I know the Virgin mobile phones don't use SIMs (to my knowledge) as well as Tracphone, so those are useless.