AT&T

AT&T Prepaid vs Postpaid Number Porting – Key Differences & What You Should Know

If your AT&T line is prepaid or postpaid, the porting process has slight—but important—differences. This guide explains both so you know what to expect.

Postpaid Accounts

Account Number & PIN

Use your account number and generate a Number Transfer PIN

Requirements

Service must be active and in good standing

Timeline

Typical mobile number ports complete within 1-3 business days

Prepaid Accounts

Account Info

You may not need a PIN; depending on account you may use the account number + 4-digit passcode

Requirements

Account must remain active (i.e., not cancelled or expired)

Timeline

Ports often take slightly longer—1-2 business days for mobile lines

🔑 Key Considerations

  • Don't cancel or interrupt service before your port completes
  • Ensure account name/address matches exactly across providers to avoid rejection
  • No port-out fee from AT&T in either prepaid or postpaid cases

Frequently Asked Questions

Is there a charge to port out of AT&T Prepaid?

No, AT&T doesn't impose a port-out fee.

Can I switch from AT&T Prepaid to Postpaid without porting out?

Yes—visit AT&T and ask to migrate your number internally.

Ready to Port Your AT&T Number?

Whether prepaid or postpaid, get the information you need to port successfully.