While Apple’s Bumper is a decent way to prevent iPhone 4 reception problems, it unfortunately—and somewhat obviously—doesn’t keep the device all that safe if it takes a fall.
https://gizmodo.com/the-best-semi-solutions-for-iphone-4-reception-problems-5573179
The NYT’s Nick Bilton discovered this sad fact earlier after dropping a Bumper-clad iPhone 4 onto concrete. Thankfully for Nick, the device he was using is a loaner unit from Apple—provided for a review—and not his personal gadget, but the lesson is the same: Be careful, because the odds of any case or wrap preventing the fragile iPhone 4 glass from shattering aren’t great.
Image used with permission from Nick Bilton