Apple invented a way to overcome one of the iPhone's biggest design hurdles (AAPL)

If you look at the back of your iPhone, you'll notice there are two strips of plastic that run across the back of the device. This holds true whether you're using an iPhone 5s, iPhone 5, or iPhone 6.  That's because that's where the phone's antenna resides -- if Apple didn't coat that space with plastic, radio waves wouldn't be able to get through your iPhone's metal exterior to receive and send signals. But it looks like Apple is experimenting with a way to change that in order to improve the ...