After Huawei's mobile phone data cable is connected to the computer,

Please confirm whether the mobile phone can be charged normally through USB cable. If it cannot be charged, the USB cable is damaged. Please replace the original cable and try again. Please change the USB port or switch to another computer for connection test. Please confirm whether it is the computer or the USB port.

If the mobile phone can display the drive letter after connecting to the computer, but there is no file after opening, then data cannot be copied between the computer and the mobile phone. Please confirm whether charging only is displayed under USB connection in the drop-down notification bar. If so, click Device File Management (MTP). Then on the PC side, double-click the new drive letter named after the mobile phone model in the computer to operate.

Third-party mobile assistants may have compatibility problems with Android system. It is recommended that you install Huawei mobile assistant Hisuite, connect computers, and manage mobile phone files and programs.

If you can't connect your mobile phone with a third-party mobile assistant, you can try the following solution.

If the above methods still can't solve the problem, it means that the third-party mobile assistant is not compatible with Android7.0, and Huawei mobile assistant needs to connect to the computer. (Some third-party mobile assistants need to install the corresponding applications on both the mobile phone and the computer before connecting to the computer. )

If USB debugging has been turned on, and the data cable is plugged in and unplugged, but it still cannot be connected, you can turn off the USB debugging function and then turn it on again.

Please confirm whether the developer mode is turned on: Please enter the settings? & gt？ As for the mobile phone, you can call the developer option by clicking the version number seven times in a row and clicking USB debugging, and allowing ADB debugging in the "charging only" mode.

If the mobile phone is connected to the computer, the computer prompts that the driver installation failed, or the drive letter is empty, you can manually install the driver and try again.

If your phone can view photos, but you can't view them after connecting to the computer, please go to Settings? & gt？ Application management? & gt？ More? & gt？ Show system processes? , locate the media storage in the list, and then click Storage? & gt？ Delete the data, and then restart the phone to try.

If the above methods can't solve the problem, please go to the after-sales service outlets for maintenance.