A feature that drops and returns on a phone or tablet is usually a background battery-optimization or connection-management setting killing it, not failing hardware. For Android mobile hotspot, first confirm cellular works on the phone, disable VPN for one test and connect one nearby client.
What this covers
- Android mobile hotspot with this exact failure state
- Diagnosis across carrier/tethering plan versus cellular data, VPN, band and client compatibility
What it does not cover
Try in this order
0 of 4 completedCapture the exact failure state
ReversibleNote how long the device was idle or locked before the drop, and whether it correlates with low signal or a Wi-Fi handoff. Expected behavior: share an eligible cellular data connection over a supported secured Wi-Fi band.
Isolate the component boundary
ReversibleConfirm cellular works on the phone, disable VPN for one test and connect one nearby client. Disable battery optimization for the one app and test with the device kept awake on a single network. Boundary to separate: carrier/tethering plan versus cellular data, VPN, band and client compatibility.
Correct only the proven cause
ReversibleCorrect the carrier setting, band compatibility or client network profile. Exempt the app from aggressive battery management, or turn off adaptive Wi-Fi/cellular switching for the test.
Verify and stop safely
ReversibleRun the same use pattern that triggered the drop for at least 30 minutes without it recurring. Do not use open security or overheat the phone under prolonged tethering.
Evidence ledger
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