The SIM card or eSIM is your device's ticket to the T-Mobile network!
On this page:
- A SIM card is a small chip that contains information your device needs to connect to the T-Mobile network.
- T-Mobile SIM cards come with adapters to allow for use with Nano, Micro, or Standard SIM sized devices.
- Embedded SIM (eSIM) is just a SIM card gone digital, so you don't have to wait for a physical SIM.
- Just download your eSIM over Wi-Fi and connect to the T-Mobile network in minutes!
I’m a T-Mobile customer
If you're an existing T-Mobile customer upgrading to a new device, contact us to activate your new SIM card before following these steps.
- With the device off, open the SIM card tray and insert the SIM card.
- For orders with multiple device, 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.
- Turn the device on. Your service should be working.
- To transfer data from your old device, see Set up a new T-Mobile phone.
I'm a Sprint customer who received a T-Mobile SIM card
The steps for activating your new SIM depend on which SIM card you got:
If you received a T-Mobile SIM in the Magenta packaging shown below, please follow the enclosed instructions or visit www.sprint.com/sim to activate.
If your SIM card didn't have a Magenta sleeve, choose which device type you're activating:
I'm a T-Mobile Home Internet customer
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 below:
- Postpaid: See our SIM card page to order online. You can also find one in a T-Mobile store.
- Prepaid: See the Prepaid SIM Card page to order online. You can also stop by a store.
If you're switching between Apple & Android, don't have your old device, or have a Prepaid plan, contact us to activate your eSIM before following these steps.
There’s 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.
- To activate a new Prepaid account, check out the T-Mobile Prepaid eSIM app.
- 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 Samsung and are connected to Wi-Fi, choose Settings > Connections > SIM manager > Add eSIM to transfer the eSIM from another device.
- Our Tutorials have steps for supported devices, like the Samsung Galaxy S22.
- eSIM Quick Transfer not supported on T-Mobile For Business.
- Make sure you're connected to Wi-Fi and choose to Download your eSIM when you're setting up the device.
- If you’ve already completed setup, select Settings > Network & Internet, then choose the + icon to add a SIM. Select Download your SIM and follow the steps to activate your T-Mobile eSIM.
- For Apple devices, check out Apple eSIM troubleshooting.
- For Samsung devices, check out Samsung eSIM troubleshooting.
- Bringing your own device? Make sure it's compatible.
Was this helpful?