If you're an existing T-Mobile customer upgrading to a new device you'll need to activate your new SIM first. New customers will have their SIMs shipped activated.

1. Make sure SIM Protection is disabled.
2. Open the T-Life app while you’re connected to the T-Mobile network.
3. Select the Manage tab and choose the line you want to change the SIM on.
4. Choose SIM transfer or activation > Get Started.
5. Enter the IMEI number for the device you’re transferring your SIM to, then select Continue.
6. Choose to activate a SIM card, then select Continue.
7. Enter the ICCID, then select Continue.
8. Review the requested change and select Activate.
9. If prompted, respond to the interactive SMS (iSMS) to confirm the change.

Once you have your active SIM, follow these steps:

1. With the device off, open the SIM card tray and insert the SIM card. 
   • For orders with multiple devices, use the order confirmation email to verify which SIM card goes in which device.
   • Here's a short video to guide you through the process.
     
2. Turn the device on. Your service should be working.
   • If you're bringing your own device from a different carrier or company and data isn't working, add T-Mobile's APN settings.
     
   • If you don't have bars of signal, check out No Service Troubleshooting.
3. To transfer data from your old device, review Set up a new T-Mobile phone.

If you just signed up for T-Mobile Home Internet, the SIM card is already in your device and active! Check out T-Mobile Home Internet Support for information on device placement and setup.

If you've just replaced your Home Internet Gateway, You'll need to remove the SIM card from your old gateway and insert it into the replacement. Choose your device:

• Arcadyan KVD21 Gateway
• Askey LTE Wi-Fi Gateway
• Nokia 5G21 Gateway

There are a few ways to setup your eSIM:

• During the initial setup, you'll be prompted to activate an eSIM or transfer one from an existing iPhone.
• If you've already set up your iPhone and are connected to Wi-Fi, your iPhone will prompt you when the T-Mobile Cellular Plan is ready to be installed.
• Didn't get a prompt or chose to activate later? You can activate your eSIM from the device Settings > Cellular.

• During initial setup, you'll be prompted to activate an eSIM or transfer one from an existing device.
• If you've already set up your device and are connected to Wi-Fi, you'll be prompted to activate your eSIM when it's ready to add.
• If you didn't get the prompt or chose to activate later, select Settings > Connections > SIM manager > Add eSIM to transfer the eSIM from another device.
• Our Tutorials have steps for supported devices, like the Samsung Galaxy S24.

• During initial setup, you'll be prompted to activate an eSIM or transfer one from an existing device.
• If you've already set up your device and are connected to Wi-Fi, you'll be prompted to activate your eSIM when it's ready to add.
• If you didn't get the prompt or chose to activate later, select Settings > Network & Internet, then choose the Add SIM to add a SIM. Select Download your SIM and follow the steps to activate your T-Mobile eSIM.
• Our Tutorials have steps for supported devices, like the Pixel 9 Pro.
• If your device asks for a QR code, contact us so we can email it to you.

• During initial setup, you'll be prompted to activate an eSIM or transfer one from an existing device.
• If you've already set up your device and are connected to Wi-Fi, you'll be prompted to activate your eSIM when it's ready to add.
• If you didn't get the prompt or chose to activate later, select Settings > Network & Internet > SIMs & Mobile Network > + Download new eSIM.
• Our Tutorials have steps for supported devices, like the motorola razr+ 2024.
• If your device asks for a QR code, contact us so we can email it to you.

• During initial setup, you'll be prompted to activate an eSIM or transfer one from an existing device.
• If you've already set up your device and are connected to Wi-Fi, you'll be prompted to activate your eSIM when it's ready to add.
• If you didn't get the prompt or chose to activate later, select Settings > Network & Internet > SIMs > Add SIM.
• Our Tutorials have steps for supported devices, like the T-Mobile REVVL 7 Pro.
• If your device asks for a QR code, contact us so we can email it to you.

1. Make sure SIM Protection is disabled.
2. Open the T-Life app while you’re connected to the T-Mobile network.
3. Select the Manage tab and choose the line you want to change the SIM on.
4. Choose SIM transfer or activation > Get Started.
5. Enter the IMEI number for the device you’re transferring your eSIM to, then select Continue.
6. Choose to activate an eSIM, then select Continue.
7. If prompted, turn on Wi-Fi or insert the SIM card.
8. Enter the EID, then select Continue.
9. Review the requested change and select Activate.
10. If prompted, respond to the interactive SMS (iSMS) to confirm the change
11. Connect to Wi-Fi and scan the QR code. 
    • Check in Settings > Network & Internet > Mobile Network for most Androids.
    • Our Tutorials have steps for supported devices.