Data mining proof

How can I proof for myself which app or the OS itself is collecting my data and sending it ‘home’ ?

To trust the FOSS developer is OK, but a own proof is better

A while back there was a topic with the same question:


Ah, Ok, haven’t seen. But I hope, that we will get some answers now.And I’m not meaning e alone, I mean also every app I have installed.

My reply in the other thread is also valid regarding verification of apps.

Help, I have seen, tx

Install AFWall+ and see its log (IP, Port) who where and how many times was
request. The truth is unknown what: programs, Android (its core) and others,
tried to send.