Terry White says, "I’ve reviewed tripod mounts for smartphones before, however the good ones I’ve looked at in the past were fine as long as you only wanted to mount your smartphone horizontally. Horizontal mounting is desired by film makers for sure. There are times when you may want a vertical mount especially if you’re shooting stills or time lapse. For this I turned to the good folks over at Arkon (the makers of mounts for just about any device) and sure enough they had one that was exactly what I was looking for. It had to be able to rotate between horizontal and vertical orientation and it had to be big enough to accommodate my iPhone 6 Plus."