I know what you’re thinking. If I saw a $99 case for an Apple iPhone 4/4S I would run the other way (if I owned an iPhone that is… GO DROID!). However, this phone sleeve/case is actually a pretty cool idea. When you connect the case to the iPhone, it connects you to Clearwire’s WiMax network and you are given 500MB of free 4G data a month. Pretty cool idea and maybe something you might see coming to other mobile devices in the future. Check out the video above for the rundown.