If the Xiaomi Watch S4 experience freezing, black screens, or failure to power on, please refer to the following solutions:
1. Connect the watch to its charging dock and cable, ensuring proper contact, and charge it continuously for at least 10 minutes. This ensures the battery has enough power to function;
2. If the watch still does not power on after charging, perform a forced restart by pressing and holding the power button for more than 12 seconds to reboot the device.
If the issue persists, or the watch remains unresponsive, it can indicate a hardware fault. Please contact your local after-sales service center for professional assistance and inspection.