Here's the answer: To use your phone to reverse charge the Watch 3, you need to make sure your phone supports reverse charging. Here are some methods for common phones:
1. Apple Phone: Open the Control center, long press the Control Center bar at the bottom of the screen, then select \"Battery level\
2. Huawei phone: Go to Settings, select \"Battery\
3. Xiaomi phone: Go to Settings, select \"More Settings\
Note that reverse charging may affect your phone's battery life, so use caution. In addition, the speed of reverse charging may be slower than normal charging.
watch The watch has a wireless charging function, you can turn on the reverse charging switch of the phone, and then the back of the watch to the back of the phone can be charged.