I loved the idea of the yotaphone and bought the second version (using it to write this) but it's actually the worst phone I've ever owned by a wide margin. The hardware quality is not great and it's stuck on a very old version of Android.

The eink display is neat and great for navigation especially, handy for visual notifications on a desk, but otherwise not as useful or as cool as I expected. I kind of regretted buying it.