Just make sure the surface is clean and free from liquid.- Compatible with most phones, I used it with my iPhone 7 plus

However, the included adhesive doesn't stick well to textured surfaces, so you'll need a smooth surface for the best install.

Be sure to clean the surface and place mount on a flat area

Followed the instructions to a T and tried on both the textured and a smoother surface of the car.. absolutely won't stay on no matter what, especially once you try to make it hold your phone

I chose a difficult surface to mount.

I definitely would recommend purchasing from Ranvoo as they appear to stand behind their products.

Strong 3M adhesive mark free comes with it on the base as well as with the metal plate