Adding a line to your account is easy and we'll show you how.
Keep in mind, only Primary Account Holders can add lines to the account and the account will need to be current.
From a mobile device with the T-Mobile app
- Open the app. If you don't have it, download it now.
- Tap Menu > USAGE & PLANS.
- Tap View Plan Details.
- Scroll and tap Add a line and follow the onscreen instructions.
From a computer
- Go to My T-Mobile and log in to your account.
- Select SHOP.
- Select ADD A LINE and follow the onscreen instructions.