In the vast, ever-expanding world of iPhone cases and films, it would be fair to say that 10% are merely decorative, 10% are solely protective, and the other 80% are designed to be some combination of the two. Until today, however, roughly zero cases have been designed to improve the iPhone’s core functionality, a number that increases to perhaps 3% if you count the few cases with integrated video stands. Griffin Technology’s ClearBoost ($35), therefore, is a major stand-out. Described by the company as an “antenna-boosting case,” which “improves reception as it protects your iPhone,” ClearBoost is the first iPhone case with an integrated, stub-like antenna at the top, as well as the first that measurably improves iPhone cell reception—under certain conditions.