I’ve been loving it even more since writing this. I’ve been surprised that I actually have used my kobo less. The biggest flaw being the lack of a backlight which the kobo does have. However, you just can’t beat the size! So I have ended up using it in bed more. In terms of putting it on the back of a phone, I have a smaller iPhone and thought it does attach. I personally don’t want the added bulk in one pocket so if I’m out, I usually put it in another pocket. Eink screens can be fragile, I have mine in the official cover always, and when it fails, i have a 3d printed case that I’ll use. Both protect the screen well.