I was using an app called "fast reboot" before to clean up memory. When I click it now it always says 0%, meaning nothing there to clean. Previously it would shut down everything with some stuff restarting of course and clear alot of MB's. So does this mean it's not neccessary anymore with the GB OS because it self cleans or maybe the app just doesn't work with GB. Phones running fantastic, better than it ever has. I have no complaints.