How to Install and Activate an eSIM on Your Phone

Make sure your device supports eSIM and has a stable internet connection (Wi-Fi recommended). You’ll also need your eSIM QR code handy — this was sent to you by email immediately after your purchase. Keep the email open on another device or take a screenshot for easy access during setup.

1. Open the Settings app on your iPhone
2. Tap Cellular or Mobile Data
3. Tap Add Cellular Plan or Add eSIM
4. Use your camera to scan the QR code you received by email
5. Tap Activate Cellular Plan when prompted
6. Wait a moment for the plan to be detected
7. Tap Add Another Cellular Plan if you want to keep your original SIM
8. Choose your default line for data and set your preferences
9. Make sure your new eSIM is enabled for Data Roaming in Cellular settings

1. Open the Settings app on your Android device
2. Go to Network & Internet or Connections
3. Tap SIM card manager or Mobile Network
4. Tap Add SIM or Add Mobile Plan
5. Select Scan with QR code and scan your eSIM QR code
6. Tap Download to install the eSIM profile
7. Name your eSIM plan (e.g., ‘TailSim Travel’)
8. Set the plan as Active or Secondary depending on your needs
9. Enable Data Roaming in Mobile Network settings to use data abroad

• QR code won’t scan? Increase screen brightness, clean your camera lens, and ensure the QR code is fully visible on your screen.
• eSIM not activating? Restart your device and try again. Make sure you have a stable Wi-Fi connection during activation.
• No data connection after activation? Check that Data Roaming is enabled in your cellular settings. Verify your eSIM is set as the active data line.
• eSIM profile not appearing? Go to Settings → Cellular → Cellular Plans and check if the plan was added. If not, you may need to contact support for a new QR code.

Once your eSIM is activated, you can start using mobile data immediately. You can manage your eSIM from your phone’s settings — switching between plans, checking data usage, and topping up your balance. Your original SIM remains active for calls and messages unless you specifically set the eSIM as your default line.