It will not move!

The media has a powerful suction cup with a convincing closure. Once in place, it is hard to remove even by an air call using the tab. There is no doubt the system is effective. To place the smartphone, it must discard the bracket surrounded by red protective gum. It is hard enough and will have to use both hands. The advantage is that then the smartphone holds very well no matter the direction chosen. And there is no risk of spoiling because the protective overcoat is very thick. It is thus just as easily place it horizontally or vertically.
For those who do not want the item on the glass but on the dashboard, it has a 3M adhesive backing. This is significant as all dashboards are not flat and there are few materials that take the time on this surface.

Ultimately, this universal holder is very convincing and no moving on the windshield (I have not tested it on the dashboard). It's all good!

Pros: - Swivel 360 degree with good flexibility vertically - Keeps really well - Sticker Support for the dashboard
Cons: - Part to insert the phone difficult to separate