Step 2, in the \"Settings\" option, find the \"General\" sub-item icon, click to enter;
Step 3, find the \"password lock\" option, the default state is \"off\
Step 4, click \"Open Password\". The mobile phone has two password Settings. The default is \"Simple Password\
Step 5, set the input password, enter four digits in simple password mode;
Step 6, enter the password again to ensure that the password is exactly the same as the previous step;
Step 7: The password takes effect immediately after the setting is complete. You can also close the password and change the password in the setting. You can also set what programs are allowed to access when locked, or even worse: erase the data! After the user enters the password ten times, the system will erase the data in the phone. If the phone is lost, this function is the best solution to avoid data theft;