When you make a phone call, there's a reason your ear doesn't press all the on-screen buttons. The optical sensor near the earpiece is that reason. Thing is, the sensor needs an opening to see if anything is close. It's a small blemish, sure, but it's one manufacturers would love to do away with as they come up with increasingly sexy hardware (soon TVs won't be able to show these devices in commercials without covering them with black bars).

Read More