On advice when I purchased the EVO, I installed ATK. I hadn't used it, though, until this morning. The problem came when I tried to use SportyPal, a GPS app, to track my morning walk. I've used it successfully for several days - and it knocks me out! But, first, I wanted to try My Tracks, another GPS app. Couldn't get any positive results there. When I switched to SportyPal and found that it wouldn't work, I reasoned that My Tracks still had control of GPS
So, I tried the formula an earlier poster suggested: Settings, Applications, Manage applications...and then the OS crashed...or "hung up." After some tinkering, I got to the home screen and tried again: same result. I then went to ATK and unchecked all apps except My Tracks. I was then able to use SportyPal.
Android OS, no. ATK, yes.
I'm less than a week into this. There's lots to take in, but some of it seems unnecessarily obtuse. I can't for the life of me understand why there isn't an effortless option to close an app upon quitting the app. You wouldn't necessarily need to do this with every app, but with some it seems an obvious need. Eventually I may get it, but at this point I'm baffled.