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

# Troubleshooting

> eSIM installed but no internet? Work through this 2-minute checklist.

Most connection issues come down to one of five settings. Work through them in order — each takes seconds.

<Steps>
  <Step title="Turn on Data Roaming">
    **Settings → Cellular/Mobile → your eSIM line → Data Roaming → ON.** This is the #1 cause of "no internet" — travel eSIMs need roaming enabled to connect.
  </Step>

  <Step title="Set the eSIM as your mobile data line">
    In **Settings → Cellular/Mobile → Mobile Data**, make sure your **Fizen eSIM** is selected — not your home SIM.
  </Step>

  <Step title="Toggle Airplane Mode">
    Turn Airplane Mode on, wait 10 seconds, turn it off. This forces your phone to re-register on the local network. A full restart works too.
  </Step>

  <Step title="Select a network manually">
    In **Settings → Cellular/Mobile → your eSIM line → Network Selection**, switch off **Automatic** and pick a supported carrier from the list. If one carrier fails, try another.
  </Step>

  <Step title="Check your data balance">
    Open **Fizen App → eSIM → My eSIMs** to confirm your plan is active and has data left. If the plan is used up, top up with a new plan in a few taps.
  </Step>
</Steps>

***

## Still not connected?

<Card title="Contact support — covered by the 1:1 Trip Guarantee" icon="shield-check" href="/help-center/fizen-esim/trip-guarantee" color="#6E3BFF">
  Tap the chat icon in the Fizen App. A human agent responds in under 3 minutes and will replace your eSIM free of charge or refund you in full.
</Card>