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Review title: It doesn't do the one thing it was made for very well.
Product review: I bought this as a backup plug to charge my iphone 3GS.I worked fine for the first 3 weeks. Now about 75% I get a message that states this accessory is not compatible and able to charge the device.What the what? That's the only thing it's built for.I noticed that if I plug it in it holds it at the same charge level. So the device does not loose power but it does not charge.
