The concept of a phone with an e-ink back screen that gave you some other than an empty plate to stare at was something of a novelty. In an effort to save battery, putting a power-sipping display on the back was bound to be a productivity boost. But proofs of concept are not without their challenges and so it was with the original YotaPhone. The e-ink display could only be viewed, the overall size was thick given the second screen, the device was underpowered and not particular attractive.
The prototype gen-2 is a whole other story though. Most importantly, the rear E-Ink panel is now fully touch sensitive, which means you’ll be able to do a lot more with this phone without ever needing to engage the traditional, power-hungry display on the other side. Calls, texts, emails, browsing, tweeting and more can be handled using the “always-on” 4.7-inch E-Ink display, with the only sacrifice being predictably slower refresh rates. he 720p LCD panel has been upgraded to a slightly bigger 5-inch, 1080p, AMOLED one. Android performance will also benefit from the inclusion of a 2.3GHz Snapdragon 800 instead of the old Snapdragon 600, and overall thickness has been reduced to 8.9mm
Lingering issues like limited system access on the back panel will present some with a dilemma, but perhaps enough developers will get on board the open API and get it ripe with functionality. After all, you can do everything on the flipside!