[iPhone]A zone which user can't interact, why?

Question

Plese refer to below image to get detail of my problem:

This maybe relate to Status bar???

*Note: this is a full-screen application. My way to do this:
1. add "Status bar is initially hidden" information property to xxx-Info.plist.
2. In all screen of app: set "Status Bar" to none.

Answer 1

You are likely loading a nib with your control set to 320x460, instead of 320x480. Post how you are generating this view and we can help more.

Answer 2

Is this happening on the device or just in the simulator?

The simulator has/had bugs that stop it reporting touches in the status bar area.