You can avoid big data by turning off your phone's permissions, personalized software recommendations, and the source of the software. To turn off the phone permissions that the app needs, open the phone settings into the privacy permissions, open the permissions management here we have the app for the phone permissions needs, such as location information, camera, microphone and other permissions, these are our own privacy, it is recommended that you either turn off, or every time you use the inquiry, to prevent the app from the background of the self-start.