How to change your card on file for T-Mobile

Last reviewed September 14, 2026

T-Mobile AutoPay is an easy place to capture extra rewards every month. You keep every card you carry — this just makes sure T-Mobile renews on the one that earns the most.

Where to update it

In your T-Mobile account: T-Mobile account → Billing → AutoPay.

Step by step

Log in at t-mobile.com or the T-Mobile app.
Open Billing, then AutoPay settings.
Add the card Pikt recommends and select it for AutoPay.
Save your changes.

Make your recurring payments count.

Create your Pikt account to personalize recommendations to the cards you carry and the reward preferences you set. In Subscriptions, compare those cards for recurring bills before you change a card on file. Pikt Checkout brings the same estimate to online checkout and names the card likely to earn the most. You choose the card and pay with your own card. No credit card required to sign up for beta.

Pikt credit card rewards

Your best card before you pay online.

Pikt estimates which card in your wallet is likely to earn the most. Issuers decide. You choose the card and pay as usual.