Only at Best BuyUse this ReachAntenna NAG223R3A antenna to improve the signal, coverage and data speeds on your Apple iPhone 5 or 5s. More efficient performance helps increase your device's battery life, and the antenna is compatible with most nonmetal cell phone cases.
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Didn't extend the signal of my Iphone as claimed. So hoped it would work as we have trouble with our phones in the house, dropped calls, send and receive and such. For us it was wasted money.