Here is a great video (as always when it comes from) to help you achieve total automation for your device with Tasker.
Reshared post from +Armando Ferreira
Tasker on Play Store is ONLY $1.99 http://goo.gl/y8t4J. If you haven't bought it I highly recommend this app. I've attached Part 1 of my beginners guide to Tasker to show you how powerful this app is.