I buy two black support it sticks very badly. I dropped my iPhone 5s several times so I think that the first was a failure, so I mounted the second and after a few days of using same problem. However green models work very well so I redeem green and I follow very satisfait.PS people that uses suction cups are clean Advent support use it will avoid them problems. I board a glass product and cleaning and the suction cup of the support which finger beings perfectly read