title: Charles Proxy for Mobile apps that use SSL Pinning
body: <p>Charles Proxy website comments that:</p>
  
  <p>Note that some apps implement SSL certificate pinning which means they specifically validate the root certificate. Because the app is itself verifying the root certificate it will not accept Charles's certificate and will fail the connection. If you have successfully installed the Charles root SSL certificate and can browse SSL websites using SSL Proxying in Safari, but an app fails, then SSL Pinning is probably the issue.</p>
  
  <p>Just to be certain, is it possible to use an HTTP monitor like Charles Proxy (or another monitor) even though a mobile app uses SSL certificate pinning?</p>