title: Find out what an installed app is doing in the background using adb
body: <p>Is there a way to find out using adb or any other tool, what activities (eg. like logcat) of an installed app on my phone?</p>
  <p>eg. If I install a proxy on my PC and setup the phone with the proxy (like Charles Proxy) I can see all webtraffic of all apps.</p>
  <p>eg. I want to find out what files WhatsApp is accessing or what activities it has active. What permissions is being triggered, what activity is invoking, etc</p>