This is a perfect windshield mount cell phone holder. It took less than a minute to install and has been completely secure. It's got a suction cup with a little ratchet button that gets it fully suctioned in a matter of seconds.
Once it's installed, you can swivel the phone holder for horizontal or vertical viewing. It has a bendy arm which stays where you put it so you can adjust the angle and height.
It has arms with foam cushions to protect your phone. Those arms accept large phones (I have S8+, something like 6 inches) and once you click the arms around your phone, you're good to go. When you leave the car, there's a release button right behind the phone, which prevents accidental releases but is still easy to work once you've used it twice.
While you're driving, there is some minor vibration, after all, it's hanging by a single arm from your windshield. But there's far less vibration than i excited and my phone is always readable.
I used to have my phone tilted in a lower center console, which meant that when i need Google directions, i had to look away from my phone. Now it's up high under my rear view mirror, which feels much safer, as I'm looking inches to the side instead of down near the floor.
Great price, looks like great quality, and it couldn't be easier both to initially install and to use everyday, that i wouldn't hesitate to recommend. I now have my phone up even for my daily commute, just in case of construction or accidents, because it's that easy and convenient.
Please don't use it for anything other than maps. I know some of you are thinking of doing that. Don't do that. Hang in there a few more years, the self driving cars are coming. Until then, maps only!!! Sorry, off my soap box. This is a great product!