eSIM Not Working? 9 Fixes That Solve 95% of Connection Issues

If your eSIM is installed but you cannot get online, walk through this checklist in order. Nine times out of ten, one of these fixes solves it.

1. Toggle Airplane Mode

The classic. Airplane Mode on for 10 seconds, then off. Forces a fresh network attach.

2. Reboot the phone

Yes, really. eSIM state is held in a secure element that occasionally needs a clean restart to refresh.

3. Confirm the right line is set for data

Settings → Cellular → Default Voice Line / Cellular Data. Make sure the EsimFlux line is selected for data.

4. Enable Data Roaming

EsimFlux is a foreign carrier to your phone. Roaming must be ON for the EsimFlux line specifically — this is a per-line setting on iPhone and Samsung.

5. Manually select a network

Settings → Cellular → Network Selection → turn off Auto → pick a network from the list. Sometimes the auto-pick latches onto a partner that does not have outbound roaming with EsimFlux.

6. Check the APN

Most EsimFlux eSIMs auto-configure APN. If data still fails, open the line's settings and set APN to internet (or leave blank on most networks).

7. Confirm your plan is active

Open My eSIMs in your dashboard. Plans show a Status badge: Active, Awaiting install, Expired. An expired or refunded plan cannot connect.

8. Check for carrier-lock

iPhone: Settings → General → About → Carrier Lock. Should say “No SIM restrictions”. Android: Settings → About phone → SIM status.

9. Re-install the eSIM

If all else fails, delete the eSIM profile and install again. EsimFlux allows free re-installation up to three times per purchase.

When to contact support

If you have walked through all nine steps and still no data, message us via in-app support with:

• Your order number
• Phone model and OS version
• Screenshot of Settings → Cellular → [your eSIM]

Average first-response time on EsimFlux support is under 4 minutes during business hours.