title: "unknown source" error when trying to run app from Android studio
body: <p>When installing new application from Android studio, the phone cancels the installation showing a notification that it's from unknown sources.</p>
  <p>How can I authorize Android Studio app install on my device?</p>
  <p>Notice: the device used is vivo y97 (Funtouch OS_9) connected to android studio using USB cable.</p>