How To Change My At&t Prepaid Phone Number. Caller ID systems for landline carriers can take up to three days to show the correct calling information. T-Mobile has a handy tool to check your phones compatibility but first you.
Sign in to your ATT PREPAID account. Select Change Online Password or Change 4-Digit PIN. You cant switch to ATT PREPAID during the 2 days before or the 4 days after your bill period ends.
If you need to keep your number it will be easier if your port your ATT Prepaid number out of ATT and do a port in to your ATT postpaid account after 48 hours of porting out.
Changing your number deletes all voicemail messages. If youre referring to Changing your ATT Prepaid Mobile Number you can contact our prepaid customer support at. If you need to keep your number it will be easier if your port your ATT Prepaid number out of ATT and do a port in to your ATT postpaid account after 48 hours of porting out. Scroll and select the device you want to transfer a number to.
