Nite Ize Steelie parts mount to the phone and the dash with 3M VHB adhesive.
Nite Ize Steelie parts mount to the phone and the dash with 3M VHB adhesive.

I have never tried using a suction-cup-based phone holder, so I can't speak to its effectiveness, but magnets and glue sound like a better bet. That’s the idea behind the swiveling phone holder that is Nite Ize Steelie.

Adhere the Steelie “magnetic phone socket” to your device or device case and adhere the dash mount somewhere it makes sense—and where the phone has room to travel on the ball. The socket enables the phone to articulate around the sphere, allowing you to adjust for glare and vertical or horizontal orientation without worrying about dropping your phone.