Varicose arm of the intelligent infrared sensor, when the cellphone is approaching, the varicose arm will automatically open to hug the cellphone, touch the back, the cellphone can be pulled out when the sensor is released. New upgrade, remove the complicated appearance, simple style, do not block the line of sight Suitable for all cell phones. There is no need to remove the phone case when using the stand. (most phone cases on the market except the rugged and uneven case) The car holder can hold all phones with a width of 60-80mm, which works great for all phones. FAQ Q: Does this work for iPhone 13? Answer: Yes, it works for all types of phones. Q: Would it suddenly open on its own? Or would it open easily as long as he felt something small behind him? Answer: when it detects movement in front, it opens. But once the phone is turned on, it will only open if you touch or shake the back of the holder only. Very practical and does not shake or vibrate! Q: Does the bracket slip or move when the car is driven on a rough road?