If your MondoMate eSIM shows 'No Service', the most common causes are: the eSIM is not set as the data line, data roaming is not enabled on the MondoMate profile, or the phone needs a network scan after landing.
Steps to resolve 'No service'
1Check that your destination is covered by the MondoMate plan you purchased
2Wait 2-3 minutes after landing — networks take time to register in a new country
3Toggle flight mode on and off to force a network scan
4Make sure MondoMate is selected as the mobile data SIM
5Make sure data roaming is enabled specifically on the MondoMate eSIM profile (not just your regular SIM)
6Try selecting a network manually in mobile network settings
7Restart your phone
8Check that the eSIM plan is still active and not expired in your dashboard
Where to enable data roaming
iPhone (iOS)
1Settings → Mobile Service
2Tap your MondoMate eSIM line (not your regular SIM)
3Enable 'Data Roaming' on that specific line
Android
1Settings → Network & Internet → SIM Manager
2Tap the MondoMate eSIM profile
3Enable 'Data roaming' or 'Roaming' on that profile
Busy airport terminals can take longer to register. Walk toward the exit or a window and try toggling flight mode again.