1.Suitable to ALL Sizes of Phones: The clamping width range of the phone mount is 5890 mm which can be adapted to most mobile phones with 46.5-inch screens. Holds iPhone 12, 11, X, iPhone XR, iPhone 8, 7 Plus. Samsung Galaxy S7, Galaxy S9, OnePlus 3. 2.Applicable to Multiple Vehicle Series: The phone mount is applicable to kcikscooters, bicycles, electric motorcycles with 18 to 36mm handlebar diameter. Such as electric scooter ES series, Max series, F series, Ninebot eMoped. 3.Easy to Install: It can be installed by one-handed screwing without using a wrench. Please find more installation steps in the below user manual and kindly note that before installation, please make sure the vehicle is off and parking on the kickstand. 4.600,000 Vibration Tests on Adjusting Knob: The knob-clamping system adopts stainless steel screw with fine teeth and double wires, making the clamping tighter. Passing 600,000 vibration tests, the phone will be clamped firmly during fast riding.