We Need a Smartphone Version of the Lenovo Yoga Book

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Over the Christmas holiday, I started testing the Lenovo Yoga Book— the Android and Windows versions—and found its clamshell laptop-like design to be one of the most innovative I've seen in the past five years.

Both sides of the Yoga Book have a screen. One side is the video display while the other side can be used as a virtual keyboard and writing surface. It's extremely slim and light, and uses the "watch band" hinges to tie these two screens together.

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Apple watchers may recall that the idea for the iPad came before the iPhone. When engineers showed Steve Jobs a prototype tablet, he asked if it could be done with a smaller screen and the iPhone was born.

As I used Lenovo Yoga Pad, I had a similar thought. The Yoga Book has a great display, and the second screen adds extra user interface touches that make it more versatile. Although I am still not proficient using the virtual keyboard, I appreciate the role of that second glass display.

Now imagine if that design was available on a 5.5-inch smartphone that folded out to feature multiple displays? In folded mode, it would look and act like a normal smartphone. But open it up to double the surface space and turn it into an 8- or 9-inch tablet. This would take serious engineering chops to create, but it could drive mobility to a new level.

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Apparently, I am not the only one who thinks this is an interesting idea. Microsoft recently filed a patent for a foldable smartphone, while Samsung's Galaxy X has a similar concept; a three-screen device with foldable displays.

What appeals to me most about this design concept is that a smartphone could double as a tablet. Today I carry an iPhone and iPad, but it would be nice to merge them into one.

While this concept is highly speculative on my part, I am convinced that if it could be thin enough to be a solid smartphone and unfold for tablet features, too, this design could deliver the kind of innovation the market needs.

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