The difference between iphone 4 and 4s

The difference between iPhone4 and 4s is explained with the two handsets compared side by side.

iPhone 4S review

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iPhone 4S vs Samsung Galaxy S2 Camera Comparison

iPhone 4S vs iPhone 4: What's the Difference?

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Apple iPhone 4 vs Apple iPhone 4S: What is the difference?

iPhone 4s Review: Features, Specifications, and Pricing

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Apple iPhone 4S: Thoroughly Reviewed

iPhone 5 vs. iPhone 4S vs. iPhone 4

iPhone 5S vs. iPhone 5C vs. iPhone 4S: Spec Comparison

Do I Have an iPhone 4 or 4s and How to Tell the Difference