So since a few days ago, every time I install an APK or update an APK [through both sd card and/or Google Play] my phone restarts automatically so I'm guessing it crashes? Because the app doesn't even install or update after the crash. I will say that this occurs if I install/update 2 or more apps simultaneously. But theirs never been a problem until now. Could it be an app I recently installed or Apex Launcher?