T-Mobile Prepaid Port Out Process
The port-out process for T-Mobile Prepaid allows customers to keep their existing phone number when switching to another carrier. It involves verifying the customer’s account information and ensuring the account is active before the transfer can take place. This process is designed to protect the customer’s privacy and prevent unauthorized transfers. Once approved by both carriers, the number transfer is usually completed quickly and seamlessly, minimizing any disruption in service.
What you need (collect first)
Phone number(s) being ported
T-Mobile Prepaid account number
Number Transfer PIN (port-out PIN)
Account holder name + billing ZIP (match exactly)
Step-by-step
Confirm the line is active
Do not cancel T-Mobile Prepaid service before porting.
Get the account number + Number Transfer PIN
T-Mobile Prepaid support: https://prepaid.t-mobile.com/support
Request the account number and Number Transfer PIN (account holder verification required).
Submit the port to the new carrier
Enter: phone number, account number, Number Transfer PIN, billing ZIP, account holder name.
Keep T-Mobile Prepaid active until completion
Keep the T-Mobile Prepaid service active until the port completes, then activate the new carrier SIM/eSIM and test call/SMS/data.
Common rejections (quick fixes)
PIN incorrect/expired: generate a new transfer PIN and resubmit
Account # mismatch: re-check the account number (not IMEI/ICCID)
Name/ZIP mismatch: match exactly as stored on the account