Activate T Mobile SIM : Set up and manage your T-Mobile ID

Activate T Mobile SIM : Set up and manage your T-Mobile ID

The SIM card is a physical chip that you insert in your phone. It’s tied to your phone number and identifies you, the subscriber, to the T-Mobile network.


Embedded SIM (eSIM) is just a physical SIM card gone digital. Like a SIM card, an eSIM provides your connection to the T-Mobile network.

Some devices can accommodate both an eSIM and a SIM card at the same time, so you can have two wireless accounts with talk, text, and data on one device.

This is great for having both work and personal phone numbers on the same device, or when you’re traveling internationally!

Set up and manage your T-Mobile ID


There’s a few ways to setup your eSIM:

  • During the initial setup, choose New Cellular Plan > Continue. You won’t have a network connection if you choose “Not now”.
  • If you’ve already set up your iPhone and are connected to Wi-Fi, your iPhone will automatically prompt you to activate your eSIM.
  • Didn’t get a prompt or chose to activate later? You can activate your eSIM from the device settings.


  • For the Galaxy Z Flip4 and Galaxy Z Fold4, make sure you connect to Wi-Fi during initial setup. You’ll be automatically prompted to add your T-Mobile plan.
  • For other Samsungs with eSIM, scan the QR code.


Scan the QR code.

Activate T Mobile SIM :

1. Talk to your Team of Experts to set up your postpaid plan. You will need to provide your device EID to the Expert to update your account. Connect your device to Wi-Fi and you will receive a notification to download your eSIM profile.

2. Go to the Home screen. Choose the notification. Note: If you miss the notification, you can access it by dragging down the status bar at the top of the screen or choosing the notification from the Settings menu.

3. Choose Continue.

4. Choose Cellular.

5. The eSIM is activating. Return to the Home screen.


I’m new to T-Mobile or have a new line

  1. With the device off, open the SIM card tray and insert the SIM card.
    • Use the order confirmation email to see 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 and data isn’t working, add T-Mobile’s APN settings.
    • If you don’t see bars of signal, check out No Service Troubleshooting.
  3. To transfer data from your old device, see Set up a new T-Mobile phone.
  4. Contact us if you want to transfer an existing phone number to T-Mobile.

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