Just when you think a smartphone cannot change anymore, it does. The YotaPhone redesigned the modern phone as we know it with an e-ink back, adding a second screen on the back of your phone that consumes far less power than your normal screen. You can still customise it to display the relevant information you want to see at a glance. You can also read and reply to messages, emails, and browse the web. It also double as an e-book reader that can provide 100 hours of reading time should you only use it for that purpose. Where Android screens can be impossible to read in bright sunlight, the EPD screen is perfectly readable, even in the brightest sunshine.