As essential as your phone can be while you're driving, it's just as essential that you keep your hands on the wheel while you're driving. The safest solution: the ExoMount CD car mount. Get it for $19.99 at Escapist Deals.
Hook the car mount into your CD drive and make calls and use your GPS while staying safe. You phone will be within easy reach and in a central location - without requiring you to spare a hand. Orient it however you need - this car mount rotates 360 degrees, so all your have to do is adjust your phone, not crane your neck. Use it with all iPhones, all Samsung Galaxy phones, and most other phones measuring 3.5 to 5.8 inches.
Get the ExoMount CD car mount for $19.99 at Escapist Deals.