The Yotaphone has two screens: a plain screen at the front and an e-ink screen at the back. A great idea, but this device is very disappointing.
Well started, half won, so is the saying. That a spectacular start does not guarantee the second half of that victory, however, proves the Russian Yotaphone. Another proverb is: a good start is half the work. But then you have to finish those other half to make it work well...