> ## Documentation Index
> Fetch the complete documentation index at: https://help.simsimglobal.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Activate Your SimSIM eSIM Before You Fly

> Install your eSIM at home before departure. Scan the QR code, follow the prompts, and land already connected — no airport kiosk required.

After you purchase a plan, SimSIM sends a QR code to your email. You scan that code to install the eSIM profile onto your phone. Do this before you travel — once the profile is installed, the eSIM activates automatically when you arrive in the destination country and your phone connects to the local network.

<Warning>
  Install your eSIM before you leave home. You need a Wi-Fi or mobile data connection to complete the installation. Do not try to activate at the airport without a connection.
</Warning>

## Steps

<Steps>
  <Step title="Find your QR code">
    Open your email and locate the SimSIM order confirmation — it contains your unique eSIM QR code.
  </Step>

  <Step title="Open SIM settings on your phone">
    **On iOS:** Go to **Settings → Cellular → Add Cellular Plan**, then point your camera at the QR code.

    **On Android:** Go to **Settings → Network & internet → SIM cards → Add eSIM**, then scan the code.
  </Step>

  <Step title="Download and install the eSIM profile">
    Follow the on-screen prompts to download and install the eSIM profile onto your device.
  </Step>

  <Step title="Configure your data line">
    When asked to set a default for data, keep your regular SIM as the default for calls and SMS, and set SimSIM as your data line — or follow the prompts after installation to make this change in your SIM settings.
  </Step>

  <Step title="Travel and connect">
    Head to your destination. SimSIM connects to the local network automatically when you land — no manual switching required.
  </Step>
</Steps>

## Setting your data line

<Tip>
  After installing, go to your phone's SIM settings and set SimSIM as your data SIM. Keep your regular SIM active for calls and texts so you don't miss anything while you're away.
</Tip>

## Turning off data roaming on your main SIM

<Note>
  To avoid unexpected roaming charges from your home carrier, disable data roaming on your regular SIM while abroad. SimSIM will handle all your data needs.
</Note>

## Already installed but can't connect?

If your eSIM is installed but you're not getting a data connection, visit the [troubleshooting guide](/troubleshooting) for step-by-step solutions.


## Related topics

- [eSIM Compatibility: Check Before You Buy](/device-compatibility.md)
- [SimSIM Frequently Asked Questions](/faq.md)