The iPhone 4‘s front and back panels might be made of ultra-strong glass, but they’re also a bit brittle, and a badly-angled drop can lead to a brutal shattering. Apple will often replace the back panel for free or cheap, but why not spring for a new transparent panel from the teardown whizzes at iFixit? It’ll show off your iPhone’s elegant internals (and massive battery, wow) while still protecting it. It’s available now for GSM (AT&T) iPhones for $30.