Multiple screen color, button and font size choices which let you customize your iPhone or iPad screen for a better viewing experience.

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The Windows Phone 8 start-screen lets you customize and pin Live Tiles with topics of personal interest, providing real-time updates that are uniquely yours.

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We noted shortcuts to Instagram, Twitter and Facebook were all ready to go and you'll be able to customize which apps appear on the smartglasses' screen.

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Runners can also customize the settings to show pace and distance on the same screen.

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Dell, for example, had to customize Android to develop its Streak, a tablet with a five-inch screen that will go on sale in Europe next month.

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