How to install iPhone 4 Case Program app
1. Download the iPhone 4 Case Program app from the App Store.
2. Launch the app on your iPhone 4 and sign in using your iTunes Store account or Apple ID.
3. Select your Bumper or case.
For iPhone 4 purchases made before July 23, 2010, you must apply no later than August 22, 2010; otherwise, you must apply within 30 days of your iPhone 4 purchase. To qualify for iPhone 4 case program, you must purchase your iPhone 4 by September 30, 2010.
Customers who have already purchased an iPhone 4 bumper case, Apple also provides instructions. All credit card customers will get refunds automatically, while those who paid with Cash, Check or Gift card at retail stores will need to bring their receipt back to the Apple Store for “full refund”.