Unfortunately I could not attach this to my dashboard as it just would not adhere. I did however put it on my window and have now got used to it being there. It is great on my window but I have taken away 2 stars as a lot of people do like to attach to the dash and may not be able to do so.
Not sure I would recommend unless they are sure it will adhere to the material on the dashboard.
If you are using for window I have had it there for a few weeks now has never fallen off and holds my phone firm.
Thanks for reading!