The problem of computer usb interface power supply, the voltage of desktop front usb interface or notebook usb interface is insufficient; The solution is to switch to the usb interface behind the desktop or another interface of the notebook.

There is something wrong with the data cable. There is a break in the middle of the data line, and the contact is poor. The solution is to replace a data cable or reconnect the data cable to the mobile phone and computer.

The reason of computer mobile phone hardware driver. The solution is: We download and install pea pods for Android phones, itunes for Apple phones, and Baidu search related drivers for other phones.

Problems with the interface of data line of mobile phone. The solution is to take it to repair.