I saw the thread on the version for the iPad Mini. Both versions have to be plugged into the host device and that could be problematic in that you might need to unplug it to plug in some other cable or device. This model looked like it had a REALLY cheap cover that didn't open up well. I could see the flap holding the hinged side much higher than the other making it difficult to hold the item when opened. In other words, the eInk part will not lay flat against the host device when opened. At least similar cheap covers I've had for phones that were designed like that were less than ideal for holding while opened. Maybe version 2 or 3 will be better, this one looks to be still in the prototype stage.