Russia's dual-screen YotaPhone goes on sale

We first heard about the YotaPhone a full year ago, when Russian company Yota announced its plans of adding an e-ink display to a smartphone. The final product is now available in Russia and parts of Europe with dual 4.3" displays on either side. The e-ink display on the back of the device sports a resolution of a somewhat paltry 640 x 360 pixels, but enhances the user experience by...