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The iPhone 6S looks identical to the iPhone 6, but look closely and it has major differences

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5 Things That Make the iPhone 6S and 6S Plus Different

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Head To Head: iPhone 6s Vs. iPhone 6 -- Worth The Upgrade?

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iPhone 6S Plus vs iPhone 6S: What's the difference?

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Apple iPhone 6 vs Apple iPhone 6s: What is the difference?