This happens at least once a week: I will try to wake my phone up phone via either tap or on/off button; the screen will brighten and immediately darken again. I can't reset it this way because the screen doesn't stay bright long enough to do so and, when I'm fast enough, it usually resets but then, when back online, does the same thing again. Only thing that works is taking the battery out and putting it back in. Anyone else have this problem? How do I fix it? Seems like a software issue to me or something.