By Adam Bolton Software technology being developed in Japan is able to improve smartphone screen resolution to 4K while not drastically effecting battery life.

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Source:: http://cnet.com.feedsportal.com/c/34938/f/645093/s/4bbd8138/sc/15/l/0L0Scnet0N0Cnews0Csmartphones0Eare0Eabout0Eto0Elooks0Esmarter0Ethanks0Eto0E4k0Etech0C0Tftag0FCAD590Aa51e/story01.htm