Where to look for the remnants of traces of the application so that it does not remember the phone?

Question

Android

I installed the application, changed something in it, then deleted this application, downloaded it again, and all the changes remained the same, how can I completely remove the application from the phone so that my changes are not saved in the program with the next download? Thanks

Answer 1

Before deleting the application, press the "clear data" and "clear cache" buttons

Answer 2

If the application has a logic to remember your device, it will send data about the phone to the servers. And yes, we clean the cache and residual files on the flash drive