O1539871151508, Feb 5, 2019 : Target audience: Security and privacy concerned people with a small dataplan. Right now the amount of tracking and data usage on mobile devices is sky high. Even if you choose a paid app it is still not guaranteed to not spy on you and still might show an advertisment. Right now you have the option to either use more or less trustworthy VPN apps to block access to the advertising networks or root the device and manipulate the hosts file itself. Here OnePlus can make a difference by allowing the user to block certain hosts directly via a op version of the privacy manager. Here you can see which hosts are contacted by which app and choose via context menu to block access to this host for all apps on the device. Optionally to curating your own white and blacklist this way you have the option to regularly check and fetch remote block lists. A similiar app would be AdAway from F-Droid. Not everyone uses a third party app store but would greatly benefit from more privacy and less data usage. OP can make a diffrence by caring about users this way.