Support SUPPORT
New to T-Mobile? Switching is easy Set up your device Using the app Sprint Migration Center All get started topics Ways to pay your bill All about your bill Line permissions Your T-Mobile ID Your PIN/Passcode All account resources topics T-Mobile network In-flight texting and Wi-Fi Wi-Fi Calling International roaming Mobile Without Borders All network & roaming topics Find the right plan Netflix on Us HotSpot plans Voicemail Use Mobile HotSpot All plans support topics Tutorials Troubleshooting Unlock your device Protect your device SIM card & eSIM All device assistance topics Get T-Mobile for Business Billing and payments Manage your account Orders and shopping Account Hub registration All business support topics

Only the Primary Account Holder and those with Full Access to the account can add lines, and the account must be current. Ready to add a line or device to your account? Let us show you how. For T-Mobile for Business customers, contact Business Customer Service and we'll get you up and running. For Prepaid customers, use the Activate or change T-Mobile Prepaid service page.

Add a line with a new device

  1. Log-in T-Mobile.com or the T-Mobile app.
    • In the T-Mobile app select SHOP, and then Add a line.
    • On T-Mobile.com select Add a person or device to my account in the “I want to…" section.
  2. Select your device.
  3. Select your color, memory variant, and pricing option, and select Add to a new line.
  4. Make or review plan selections and select Add a new line.
  5. Select Yes, I want to trade in a device if you would like to trade in a device. Otherwise, select No thanks, skip trade-in.
  6. Enter the trade-in device information, to find it dial *#06# to get your phone's IMEI, or find it in your device's settings, then select Continue.
  7. Provide information on the condition of your trade-in, then select Continue.
  8. Select Trade in this phone.
  9. Select Continue or select No, I’ll take my chances to opt out of insurance.
  10. Confirm your order details and pricing, then select Continue to shipping.
  11. Select your shipping method and review the address section. Edit the address if necessary, then select Continue to payment.
  12. Enter your payment details and check the Customer Agreement box to confirm consent of the T-Mobile Terms and Conditions, then select Accept & Continue.
  13. Sign your EIP Equipment Installment Plan agreement if you are financing your device with T-Mobile.
  14. Select Submit order.

Add a line with your own device

  1. Log-in T-Mobile.com or the T-Mobile app.
    • In the T-Mobile App select SHOP and then Add a line.
    • On T-Mobile.com select Add a person or device to my account in the “I want to…" section.
  2. Select your device type.
  3. Select the option to bring your own device.
  4. Review plan selections and select Add a new line.
  5. Confirm your order details and pricing, then select Continue to shipping.
  6. Select your shipping method and review the address section. Edit the address if necessary, then select Continue to payment.
  7. Enter your payment details and check the Customer Agreement box to confirm consent of the T-Mobile Terms and Conditions, then select Accept & Continue.
  8. Select Submit order.

Was this helpful?