Please note that the top-up form below is only for AT&T or Three Mobile sim cards purchased from Prepaidzero.
Supported at this moment:
-Data top up only for AT&T based sim cards
-International call balance top ups for both AT&T and T-Mobile sim cards

Data for T-Mobile sim cards should be topped up at

TOPUP - USA Prepaid Sim Card

1. Select top up amount

2. Phone number
Or Your Dialer username (as on our paper)

Confirm phone number/username