Ram Mount X-Grip all day long. I have a suction cup mount and stick it to the windshield next to the A-Pillar on the drivers side. I run the power from the center counsel next to the shift lever, the steering column and into the phone. Its really pretty clean.
If you have Samsung S7 and enable the voice control camera control you can take selfies while driving hands free by saying 'click'.
Anker Quick Charge 3.0 42W Dual USB Car Charger, PowerDrive+ 2
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
[2-Pack] Anker 6ft / 1.8m Nylon Braided Tangle-Free Micro USB Cable with Gold-Plated Connectors
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Ram Mount Twist Lock Suction Cup Mount with Universal X-Grip Cell Phone Holder, Black, RAM-B-166-UN7U
RAM X-Grip® for Phones and Tablets
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Here's an example pic with the phone in the x-grip. We were going over Rabbit Ears Pass on our way to a ski trip in Steamboat Springs, CO ...