what is the role of /system/app on Android?
<p>I am looking to clear space on /system on my Android device.  It turns out that /system/app is using almost 35% of the space on /system.  I find that if I delete an apk from /system/app, nothing seems to happen to the application.  It does not get uninstalled, and it still runs fine.  Therefore, what is the role of /system/app ?  Is it some sort of cache?  Can I clear everything in it?</p>
