If you're looking for a more industrial and permanent cell phone mounting solution, then the RAM MOUNTS Quick-Grip XL Spring-Loaded Smartphone Mount with Drill-Down Base might fit the bill. The mount's base is made from strong powder coated marine-grade aluminum, and has a hole pattern for drilling/screwing it into a fixed location. A double-socket B-sized arm ends in a spring-loaded phone holder and has dual ball heads for near-infinite adjustment options. The spring-loaded holder has top, bottom, and side grips to better secure your phone in place.