I got a review, which says:
Your app stops working, when the automatic screenlock is activated
The only thing, I can imagine is the onHide()-Event, which stops my timer. It should be called when a Menu appears or you want to move to the widgets (which is not possible, but I hoped so in the past).
I can easily solve it by removing the onHide and stop my timer in onMenu.
But in my eyes the screenlock should not "Hide" the app. It should be active, still!
And there should be a possibility to simulate this in the simulator. Maybe not automatically, but like "force onHide" and "force onShow".
Using onHide, hides the GUI. And the unlock-button still works as an app-button. It is not a proper way to simulate it.