Only your data throughput speed will change if you use 3GB or more in one billing cycle on a 3G or 4G smartphone or 5GB or more on a 4G LTE smartphone.

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You'll see that they will use technology to speed up design.

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One-touch zoom on 5-megapixel images, by simply swiping across the display, is an addictive and welcome addition, allowing you to still use the physical button to capture high-speed images.

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However, if you use your iPhone for bigger tasks like playing graphic games, the speed is a very welcome bump indeed.

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Mr. BEN HOCKSEY (Engineer, Eaton Corporation): Most of the energy used in a vehicle - the reason we have big engines in vehicles is to accelerate them up to speed at a reasonable pace, and then you only use a fraction of the power when you're going down the road.

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We'll have to wait and see how much -- if any -- of that is actually implemented any time soon, but if you'd like to check out the technology in use today, Speed TV has a live stream from several of the cars currently racing around the Circuit of The Americas in Austin, Texas.

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If call reliability is paramount, stick with Verizon, and if you want to use a lot of data but don't care about speed, go with Sprint.

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