This support is well designed, and it will fit most phones through its asymmetrical claws, one plant for a maximum width of 77 mm, the other two with a spacing of 35 to 50 mm. These claws can be rotated 360 ° for horizontal or vertical use of the phone. On Xperia Z1, no button is pressed and the charger port remains accessible by opening the sealed door. The ball joint and allow a relative freedom of movement, but this support is not made to be mounted on a vertical plane, or for too vertical windshield. It is perfect for a horizontal or suspended upside (possibly highly sloped windshield).
The "super suction cup" is actually very effective, it first and then glue aspires, even on slightly dusty media. It works perfectly on a flat smooth surface, but also holds very well on a light curve with grain. We simply ensure the regularly change up to prevent damage to the long foamed dashboards that mark after a few days. On the road, the support may vibrate if the road is bad, but nothing to do with the "shower hoses" cars sold in center. A great product!