Cleaning a surface without curvature.
--The dashboard pad may be frozen and lose its stickiness at low temperatures. If the temperature is below 59℉/15℃, please warm up it(use the warm wind of the car air conditioner) to 61-95℉(20-35℃) to recover its stickiness before installation for the best performance.
With one thumb firmly press the pad, moving another thumb up and down from one end to the other to ensure a good fit. Let it be for 15 minutes and then install the suction cup on it.
Before re-installing this suction cup, please check if the bottom of the suction cup is dirty, if it is, please clean and air dry it with water.