As OtterBox's most bare-bones case yet for the iPhone 3G, Impact Series ($20) is a silicone rubber design that makes no pretense at offering splash-resistant or submersible protection for the device; instead, it uses black or white rubber to cover most of the iPhone 3G's sides, back, and front around the screen, leaving holes for the screen, top and bottom ports, camera, and -- unfortunately -- the Apple logo. No film is included in the package to…
