1、wireless video mobile phone

2、through WIFI real-time transmission, camera, video, reverse, entertainment

3、with the way Bai'an camera, mobile phone can achieve the reversing

4、mobile phone reversing


REMARK:
The use of (android.permission.READ_PHONE_STATE) is handled when app is running, and then there is a phone call, when the call is over, if the phone screen has been locked, automatic unlocking