People who currently own an iPhone 4 are eligible to receive a free bumper from Apple. Steve Jobs, what a nice thing to do. Giving out free bumper to every user in the world just to make us happy. By using the bumper it will prevent the signal dropping, too bad the bumper only wraps around the design structure base.
Once I get my free bumper I’m going to sell it on eBay and find a better casing on the net. I prefer my casing to cover the back of the iPhone plus sides. If you ever thought of getting a free iPhone 4, try this wonderful site.