One of the newest case manufacturers is also one of the most socially conscious. Case for USA has recently launched its first offering, LifeJacket for iPhone 4 ($30). The case is made of 100% recycled plastic -- a a simple shell that snaps onto the back of both the GSM- and CDMA-based models. There are wide openings along the top, left side, and bottom for full access to the headphone port, noise canceling mic, Sleep/Wake button, side switch,…
