Easy applet to silent your phone, when you enter a specified area by the user, it can be the library or the university or your workplace or whatever you need to.

This Trigger fires every time you enter an area you specify.

This action will mute your Android device's ringtone. If your device is already muted, it will remain muted.

If you enter an area of your choice, then mute ringtone and set to silent profile.