I've noticed on my iPhone since 6.1.3 that when I have my screen locked, and I hit the home button that every other time that my screen comes on, it's moderately dimmed? When it does this, I just hit the top button and try again, and it's back to normal brightness. I've been seeing this for since the update. Well, I updated my iPad mini yesterday, and the exact same thing started happening. I've tried turning off the auto function on the screen brightness, and nothing has helped. Anyone else noticing this?