How to Change Your Phone Number on T-Mobile

T-Mobile can change your number through customer care, a store, or in some cases your account online. Update your verification codes before switching.

Ways to change it

• T-Mobile app or website: some accounts offer a number change in line settings.
• Customer care: call or chat, and ask to change the number on a line.
• A T-Mobile store: staff can help choose a new number.

A fee may apply depending on your plan. The account holder usually needs to approve the change.

Before the change

1. List accounts that send codes to your number: email, social media, shopping, work.
2. Switch them to an authenticator app where possible.
3. Add a recovery email to each important account.
4. Save backup codes for your main email.

After the change

• Restart the phone so it picks up the new number.
• Update WhatsApp, Signal and Telegram with their change-number features.
• Update Google, Apple and Microsoft accounts.
• Tell contacts, your doctor and other services that call or text you.

Protect your number

T-Mobile offers account protection features, such as a PIN or passcode and number transfer protection. Turn them on in your account so nobody can move your number without permission. See number transfer PINs.

New phone instead of new number

If you just want a new phone, you do not need a new number: move your SIM or eSIM. See eSIM vs physical SIM.

Why people change numbers

Unwanted calls, moving to a new area or a new start are common reasons. If spam is the problem, call screening and blocking may solve it without losing your number. See blocking spam.

Several lines on one account

On a family or business plan, each line has its own number. Make sure you change the right line, and that the person using it knows the new number before you switch, because their codes will stop arriving at the old one. Update the contact details for that person on shared services too.

FAQ

Can I change my T-Mobile number online?

On some accounts; otherwise ask customer care or a store.

Does T-Mobile charge to change a number?

A fee may apply depending on the plan.

What happens to my old T-Mobile number?

It is eventually reassigned, so update accounts that use it.

Related: change number on Verizon · block spam texts · number transfer PIN.