iPhone 4: Touches works on simulator but not on device

Question

I'm developing a universal application, I actually tested in on:

• iPad: Simulator OK - Device OK
• iPhone 3G: Simulator OK - Device OK
• iPhone 3GS: Simulator OK - Device OK
• iPhone 4: Simulator OK - Device NOT working

the application don't respond to any touch input, I tried to put some breakpoints into touchBegun,touchMoves,touchEnded, they are never called... any idea ?

Answer 1

This issue simply disappeared this morning after a reboot... iOS instability ? nvm