Lock yourself out of your phone for a certain amount of time I check my phone (Android) more than I study. Is there any program or way to lock yourself out of your phone for a certain amount of time until you complete a goal? At the same time it should allow phone calls to come through.
Hand it to a roommate?  Or trade phones with a study partner?  

Reminds me of the old "how do I stop myself from using my credit cards" scenario:

http://moneyning.com/credit-cards/freeze-your-credit-cards-to-ice-your-spending/