A：1. If the charging icon appears but the battery level doesn't increase or decrease, please check if the device is connected to a low-power device such as a computer's USB port. USB ports have very low output power; if the device is running relatively power-intensive applications (including background processes), the charging input will be offset by the phone's own power consumption, resulting in no change in battery level while charging.
2. If this problem occurs when using a charger, please try the following:
a. Close background applications and let the device charge.
b. Use the standard charger that came with the phone.
c. Update your system to the latest version. If necessary, restore the device to factory settings to troubleshoot the problem.
d. Try a different charger of the same specifications. If the charger charges normally, the charger is faulty; please contact the seller for a replacement.