A study published in 2018 revealed that a dormant, stationary Android phone (with the Chrome browser active in the background) communicated location information to Google 340 times during a 24-hour period. Source: Digital Content Next – Prof. Douglas C. Schmidt, Vanderbilt University, August 2018
An other study published in 2018 revealed that of 100,000 android tested apps, 88.4% contained Google trackers while 42.55% contained Facebook trackers
These tech firms then build fine personality profiles and behavioral analysis which are of a great value for marketors. Google is the world biggest advertising company
But there could be worse consequences than invasive ads. Other unscrupulous actors can also collect your data for influence or fraudulent purposes