Start with a clean baseline
Use browser-visible screen, touch, camera, microphone, speaker, sensor and connection tests as a fast functional inspection, then use the OS/manufacturer for battery-health, cellular, biometric and internal hardware diagnostics.
Live evidence
Relevant checks
First sequence
Do the high-signal checks before risky changes
- 1
Test pointer movement in a simple app/browser
- 2
Check USB/Bluetooth connection
- 3
Use official tablet driver settings for pressure/mapping
Decision points
What the result should change
If touch/camera/audio works in browser but not one appCheck the app's permission and selected input/output before resetting the phone.
If charging is the symptomSeparate adapter wattage, cable capability, connector condition and battery/thermal limits.
If the device is used/refurbishedTest all user-facing functions before account transfer/payment, not after.
Browser can help check
- Observe pointer movement/buttons
- Access some specialized HID devices in supported browsers
Browser cannot prove
- Guarantee pressure/tilt support across every browser/tablet
- Calibrate proprietary drivers
Repair boundary
Know when to stop browser troubleshooting
- Swollen batteries, exposed cells or severe heat require immediate service handling.
- Do not insert metal objects or liquids into charging ports.
- DeviceOK cannot verify IMEI ownership, activation lock or water-resistance integrity.
Used-device inspection
What to verify before paying or signing off a repair
- Touch across the whole panel and pixel/color inspection
- Front/rear cameras, microphones, speakers and buttons
- Charging/data port, Wi-Fi/Bluetooth and manufacturer battery-health screen