Did not get to enjoy the benefit of this accessory for use w/ my flip-phone - constantly popped off within 3 mins. Would not hold (wet/dry) long on a friends device either. Suction cup portion is fairly shallow & thin. No problem adhering to clean glass well = applied (model paint) 2 white dots & a smiley mouth on ball end, & positioned on inside of windshield above rear view mirror. . .could function as a hook to hang or wrap light (sunglasses + cords + ?) items - or serve as a pull/slide knob.