If I put my phone to sleep, then put it in my pocket... It turns itself on. Being to battery conservative that I am, this is a problem. It seems to be turning on from the home button. So is there any way to disable the home button when sleeping? or is this the problem I should be focussing on when it comes to battery conservation? Any insider tips, that arent duh obvious like turning off wifi etc. Thank you. Phone = Galaxy S2.