Sleep mode does not normally switch off an eSIM, but it can suspend background apps, delay notifications or turn off network features on some phones.
If data returns when the screen wakes, the likely issue is an app or battery restriction rather than the eSIM profile.
Do not delete the line or reset the phone before running a direct connection test.
Quick answer: Wake and unlock the phone, turn Wi-Fi off and load a webpage. If it works, exempt essential travel apps from sleep or battery restrictions. If it fails, refresh network registration and verify the selected eSIM.
Distinguish delayed apps from lost data
- Wake and unlock the phone.
- Turn Wi-Fi off.
- Load a new webpage.
- Open the delayed app manually.
- Temporarily disable sleep or battery restrictions and retest.
Compare this with the Low Power Mode checks.
Allow essential background activity
Permit maps, transport and messaging apps to run when needed, while keeping cloud backup and media apps restricted. See the background-data guide.
If the whole connection is offline
Confirm the travel eSIM is selected for data, enable its required roaming setting and toggle airplane mode once. For manual NoveSIM APN use data.esim.
Continue with no-internet troubleshooting if signal appears without data.
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FAQ
Can sleep mode disable an eSIM?
Not normally; it more often delays apps or background activity.
Why do messages arrive after unlocking?
The messaging app may be suspended while the screen is off.
Should I disable sleep mode permanently?
No. Add exceptions only for essential apps if needed.
Should I delete the profile?
No. Test data and battery restrictions while keeping it installed.
Final Recommendation
Prove whether sleep mode affected apps or the whole connection with a browser test.
Restore essential background access and troubleshoot the eSIM only if all mobile data remains unavailable.
