Then tear off the protective film of the electrostatic film and stick it on the glass. ◆Step 2 Attach the electrostatic film to your car's windshield, making sure it is smooth and free of bubbles. Tear off the protective film,Stick it on the car phone mount base and press it at least 4 minutes for better connecting to the base◆Step 4 Peel off the label protective film from the mount and attach the dash cam to the static cling film on the windshield.