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How to activate an Xfinity Mobile eSIM

The activation process can take a while, so be prepared.

Published onMarch 3, 2024

If you’re a Comcast customer, there may be a solid incentive to switch your phone service over to Xfinity Mobile. And if you have an eSIM-compatible phone, chances are you want to take advantage of this technology. Here’s how you can activate a phone with the carrier via eSIM instead of a conventional SIM card.


You can activate an Xfinity Mobile eSIM using either the official Xfinity website or the Xfinity app. The steps vary greatly, so keep reading to see step-by-step instructions based on your specific needs.


Xfinity Mobile iPhone X

Xfinity Mobile keeps the rules pretty clear. If you have a phone that supports eSIM, the company will activate your phone using eSIM by default. This is regardless of whether your device is eSIM-only (iPhones), or you have both eSIM and physical SIM support. Basically, the only people getting physical SIM cards now are those without eSIM support on their devices.

There are several ways to activate a new line on this MVNO. You can do it through the website or the official app. Let’s go over all the instructions separately.

Activating a new line with eSIM using the Xfinity Mobile website

  1. Go to the website.
  2. Log in or create an account.
  3. Select Devices.
  4. Choose the phone you’d like to activate.
  5. Pick between Keep your existing number or I want a new number. If you want to transfer a number, you will need your previous account number and PIN.
  6. Click on Activate.
  7. The activation should take about 10 minutes. You will get an email when ready.
  8. The eSIM should download automatically. If it doesn’t, look for any notifications and follow the prompts to complete the process.

Activating a new line with eSIM using the Xfinity app

  1. Download the Xfinity app from the Google Play Store or Apple App Store.
  2. Launch the app and go into the Overview tab.
  3. Tap on Activate Xfinity Mobile devices.
  4. Hit Start activation.
  5. Pick between Get a new number and Keep and transfer current number, then hit Next. If you’re transferring your number, you will need your previous account number and PIN.
  6. Follow the prompts until you’re asked what kind of SIM you need. Select eSIM.
  7. Scroll down to the Add your eSIM to the Xfinity Mobile network in the Xfinity app section.
  8. Tap on Set up eSIM.
  9. Follow the on-screen steps to finish the process. You will get a message saying, “Cellular Setup Complete.”
  10. Check if you have signal bars in the top-right corner of the screen.
  11. If you do, select Yes, I have cellular service bars. Then hit Continue.
  12. You will see a message saying Activation complete.

How to add an eSIM to an existing line

Now, if you’re switching devices on your already-exiting Xfinity Mobile line, the process can only be done from the website. Here’s how to do it.

  1. Go to the website.
  2. Go into Devices.
  3. Click on Replace your device.
  4. Select Bring your own.
  5. Choose the device you are using and enter the IMEI number. If you don’t know it, here’s a guide on how to get your IMEI.
  6. Follow the on-screen prompts.
  7. You will get a text message with a passcode on the older device. Enter this number on the Xfinity website.
  8. A notification will show up on your newer device. Tap on it and follow the on-screen instructions to finish the process.


You can use any eSIM-supported smartphone with Xfinity as long as it is not locked to any carrier. It also needs to be compatible with the network and frequency radios. Xfinity has a compatibility tool here.

Don’t worry! Xfinity makes it easy to suspend or cancel your line if your eSIM-compatible phone gets lost or stolen. Follow the steps here.

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