Uh oh: on top of reports that the EVO 4G suffers screen-detachment issues, we're also starting to hear that the touchscreen sensor is inconsistent, particularly when the phone isn't grounded. We've seen more than one report and video purporting to show the EVO's touchscreen failing to smoothly register touches when the phone isn't being handheld (and thus grounded). We haven't been able to reproduce the issues ourselves, but trust us when we say we've heard from enough unhappy EVO owners to believe that the problem is real. What's more, there's also a new video showing the same problem o
