Two Sided Yotaphone is Part Android Phone, Part E-Ink Display
Yota Devices will launch its Yotaphone this year. The phone contains two displays. One side is an Android Jellybean phone. The other side is an E-ink screen for reading books and news. The phone will be on display at the Mobile World Congress 2013 in late February. The phone can send information from the front to the back. The E-ink screen uses less battery power.
Here is a video of the two sided Yotaphone prototype from Engadget. Take a look: