For a personal T-Mobile postpaid account, the Primary Account Holder requests a Temporary Port Out PIN. Enter that PIN, your T-Mobile account number, and billing ZIP in Previ’s number-transfer step.
Get the PIN from T-Mobile
- Use the phone with the active T-Mobile line. Turn Wi-Fi off and connect through the T-Mobile network.
- Sign in to T-Life as the Primary Account Holder. Select Account, then the gear icon.
- Open Permission & controls, then Transfer PIN. Complete any account verification.
- Choose Create PIN and keep the displayed PIN with your account number. If Port Out Protection is active on the line, the Primary Account Holder must remove it using T-Mobile’s protection controls.
Enter the details in Previ
- Return to the number-transfer step and choose Keep my number.
- Enter the number you are moving and select your current carrier.
- Enter the account number, transfer PIN, and billing ZIP from that carrier account. Use the Transfer PIN field for the transfer PIN, not an account password.
- Check the details and select Continue. If the form reports a problem, address that message before moving on.
If the PIN or account does not work
If T-Life says you are not on the T-Mobile network, check that you are using the active phone with Wi-Fi off. Prepaid and business routes differ. If you are staying with T-Mobile through Previ, use the separate account-responsibility guide.
If a transfer has already failed, use the transfer-support guide below. Tell Previ which line is affected and whether you have replaced the PIN since the request was started.
What happens next
Entering transfer information is part of enrollment. It does not establish that the number has already moved. Use Wireless to check the line’s status after enrollment. Keep the old line active until the transfer completes.
Video transcript
Here’s how to get T-Mobile transfer details and enter them in Previ.
For a personal T-Mobile postpaid account, the Primary Account Holder requests the PIN. On the active T-Mobile phone, turn Wi-Fi off. In T-Life, open Account, the gear icon, then Permission and controls. Open Transfer PIN, complete verification, and choose Create PIN. Remove Port Out Protection if it is active.
In Previ, choose Keep my number and select T-Mobile as the current carrier. Enter the number, account number, transfer PIN, and billing ZIP. Check the details, then select Continue. The transfer PIN is different from your password.
If T-Life cannot detect the T-Mobile network, check that you are using the active phone with Wi-Fi off. Business and prepaid procedures differ. Staying on T-Mobile through Previ uses the separate account-responsibility route.
Keep your existing line active while the transfer is underway. After enrollment, check Wireless for the status of the number you are moving.
Use the steps for your own line and device. If the screen or result is different, contact Previ support with the message you see.