Love the phone and the size and even though is kind of in the big side imo is it fairly easy to use one-handed at least 90% of the time, about the 10% ? well like 'jkmasi' said in the previous post about the back arrow, little things like that if you will, for instance when you are in 'Photos' and the 'Select' is all the way up there in the upper right side, one can always press and hold the pic to select but then the 'Edit' is way up there too, same in 'Notes' and probably some others, luckily we have 3DTouch which helps when writing a new message among many other applications. I am right handed but use my smartphones with the left hand and if it wasn't for those little things the device would be easily used with one hand most of the time then again it was probably design to be used with both hands so we just have to circumvent, make it work and there is nothing wrong with that. Not complaining at all, I am sure there are different views on this matter and I would definitely find it hard to leave the big screen, already tried but it was a no go in my case....