A mount for a handheld electronic device is adapted to be attached to a flat vertical glossy environmental surface, such as a mirror, with suction cups. A shelf with an upwardly concave center section holds electronic devices of various sizes and will hold an electronic device in a vertical orientation even if the mount is attached to the mirror at a small angle to the vertical. The shelf may hold the electronic device in either portrait or landscape orientation. The shelf permits a cable to be plugged into the bottom of the electronic device by being routed through a central notch in the shelf and an opening in a lip.