How do I change my lock screen wallpaper? I want it to be something different than my regular wallpaper. Is this possible without using an app? If so, how is it done? I've tried a few apps like Lockbot, Go Locker, and Widgetlocker, but none of them seem to work very well (app lock screen and stock lock screen both come up, and I have to unlock both; sometimes only stock lock screen comes up, app does nothing, etc.). If using an app is the only way to change the lock screen wallpaper, I want something that doesn't run in the background all the time (so, probably not a widget), and doesn't have intermittent issues. I'm stock rooted, not sure if that matters for this issue. Thanks!