Small, easy to apply, phone doesn't jiggle or move. I mounted my ELECCTV mount on an angled part of the vertical front of my dash and was able to pivot the mount to display my phone perfect. The mount pivots very easily to accomodate any angle. I applied mount to dash with supplied wet/dry cleaning wipes and used the larger of the 2 magnets supplied on the inside back of my Iphone 6 case. My case is thin so the magnet holds strong. I haven't attached the magnet inside my phone and it seems to stay in place. I assume, if you have a thick phone case, you could clean the back and apply the sticky-backed magnet to the outside of the phone. Mount comes with 2 different sized magnets ( 1 1/2" & 1"), so 2 phones can use mount; and, it comes with 2 extra sticky-back replacements for mounts for future use.
I have heard of magnet phone holders for quite a while. I wish I had of got one sooner. I like that I was able to position my phone on the front of my dash where phone is semi hidden and not in the sun to get hot.