Apple is now taking orders for free iPhone 4 cases to reduce antenna problems. Orders can be placed only through the new iPhone 4 Case Program app, which requires your iTunes account password for verification. From there, you select a case (choices include Apple's black bumper and several third-party options), enter your shipping information, submit your order, and wait 3 to 10 weeks (depending on the case) for it to arrive. You can place only one order, so once you've done so, you may as well delete the app. follow link
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Apple iPhone Case App Takes Free Case Orders