1. Try to enter the editing mode of the mobile phone desktop with the gesture of two fingers, and check whether there is a camera icon in the desktop plug-in;

2. Check whether the mobile phone has guest mode. If yes, change it to the master password, and you can see it by typing it into your mobile phone.

3. It is also possible that the camera software stops due to misoperation. You can try to go to Settings-Applications-All-Find the software-and click Enable. Click Clear Data and Clear Default Settings in the camera application interface, and finally restart the phone.