A couple of days ago I posted a question on what you guys did so that you could still receive emergency calls at night without the phone disturbing you letting you know you got a spam email at 3am. Several of you mentioned that I could go and change my notification volume, but doing that every night was too much work and I was bound to forget or silence my calls and forget to turn it back on in the morning. I found this wonderful FREE app called Sweet dreams. You set the time at which you go to sleep and it has several options such as disabling gps, wifi, bluetooth and putting your ringer and notification volume at whatever you want. You set the wakeup time as well so the phone turns things back on for you in the morning. Give it a try!