You cannot use the iPhone 4 dock with the bumpers on. One solution is to use the universal dock without an adapter. This is not an optimal solution, but works.
Hope Apple makes an adapter specifically designed for the iPhone 4 bumper.
But for now, I decided to build an adapter by myself. It's based on the one for 5th Generation iPod (No. 9). I cut the bottom part off and changed the shape a little bit.
londonfella84, アナンシット センサワーン, - Shiphattey -, Federico Viticci, and 47 other people added this photo to their favorites.

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Marian Sovak 21 months ago | reply
Yes,Led Zeppelin album ;) great
Quizzes.Net 13 months ago | reply
Thank you for this nice photo. We have used this photo on our quiz here Are you addicted to your iPhone?
mlpqfw 11 months ago | reply
Thanks shares ~ to wish you to have joyful one day
David H. White 6 weeks ago | reply
Very intelligent thought by you..