What is the reason for Huawei's mobile phone screen to open files twice?

Because the "intercom" function of Huawei EMUI system (blind mode) is turned on, it can be released in the auxiliary function:

Required materials: Huawei Glory 6X example.

First, click and select "Settings" on the mobile phone desktop, and then double-click to open it.

Second, after entering the phone settings, you need two fingers to slide the screen and drag it to the bottom.

3. Select "Smart Assistant" and double-click to open it.

4. Select Accessibility and double-click to open it.

5. Select "TalkBack" and double-click to open it.

6. Select Switch and double-click the switch.

7. Select "OK" and double-click "OK" to close the blind mode of Huawei mobile phone.