I've had the phone for two years this coming May. It is driving me crazy. I click on an icon - and it acts like it didn't know I clicked but if I wait ten seconds or more it finally opens the ap and works. Additionally various aps such as email, weather.com and others just stop responding and have to be closed - a LOT. I have the paid version of endomondo and it never works now. I am thinking I just need to do a factory reset. If I do I know all aps will have to be reinstalled (and some I won't bother with) but will the phone also have to update to the latest version of android again? And - I don't know HOW do do a factory reset or even if it will really solve the problem. Would hate to go through the trouble for nothing.