title: How to intercept / observe SIP traffic through fiddler or wireshark?
body: <p>I am using a free caller android app and they restrict me with limited credits. I would like to explore more about how this app works. So I started decompiling the APK file and intercepting networking requests using Fiddler.</p>
  
  <p>I intercepted requests, but none of those are creating the actual call. So after decompiling the APK I understood they are using SIP server for calls. I couldn't intercept any SIP call with fiddler or wireshark.</p>
  
  <p>They are using this SIP server : <a href="https://www.kamailio.org/" rel="nofollow">https://www.kamailio.org/</a></p>