I recently installed the anti-glare screen protector offered by iFly. I did this while still in the hangar and I am glad I did. Installation was no problem. But when I turned on the unit, I couldn't get past the initial page that has the Navigation and Update etc buttons on it. No amount of touches and presses would register a response from the unit. I rebooted several times with the same result.
Finally in desperation I removed the screen protector, and the iFly returned to normal, and I proceeded to go flying, but without the screen protector.
One nagging question remains though. I have noticed recently that my lower left corner, while in vertical mode with the power cord on the bottom edge, seems about an inch out of calibration. I have recalibrated several times with the same result. I wonder if something is going awry with the touch function of the entire display.