Q：The camera cannot be turned on.
A：1. If the Camera app cannot be opened or displays an error message, long-press the Camera app, select "Application Information" (circled "i"), then select "Storage and Cache," and clear the cache.
2. If the camera cannot be accessed from other apps, check if you have previously disabled that app's camera access permission. You can enable this permission in System Settings > Permissions Management > Camera Access.
3. If neither of the above solutions works, try restarting your device.
4. Verify that your system version is up-to-date. Upgrade to the latest system version and try again.
5. Please back up important data and restore your device to factory settings.
