For your reference, here are several possible reasons for these issues:
1. Dropping the phone can physically damage components such as the flash module or the rear light sensor. This damage can range from misalignment to outright breakage of internal components, leading to their malfunction;
2. Impact from a drop can cause internal connections to become loose or dislodged;
3. The light sensor relies on precise calibration. A drop can disrupt this calibration, causing the sensor to misinterpret light levels or fail to operate altogether;
4. In some cases, a drop will not physically damage the hardware but can lead to software glitches or errors. This can affect how the device communicates with and controls the flash/torch and light sensor, resulting in their malfunction;
5. A drop can cause internal damage to the phone's circuitry, affecting the power distribution or signal pathways that are crucial for the operation of the flash/torch and light sensor.
To address these issues, please refer to the following troubleshooting methods:
1. Check the device for any visible signs of damage, such as cracks, dents, or misalignment around the flash/torch and light sensor areas;
2. Restarting the device or performing a soft reset can resolve temporary software glitches affecting sensor functionality.
If the above methods cannot solve the problem, please go to the service center for inspection.