There are apps that need personal user data (such as user phone number or email), or device data (MAC addresses, device name, model, and model number).
These new moves are part of Google's Unwanted Software Policy, and the main goal of them is to provide users with warnings on apps that are trying to collect any of their data. It's called Datally, and it has one function: to stop apps from gobbling up your precious gigabytes of data. The app is available in the Play Store for phones running Android 5.0 and above. This covers app functions such as crash reports, where a list of installed apps on a device can not be sent without permission.
Google has been cracking down on certain ads within apps for a long time.
The Safe Browsing team is giving developers 60 days to update their apps towards this direction.
The warning came in a set of revised Safe Browsing rules and focused on unwanted and harmful mobile behavior posted on Friday.