Suitable for all kinds of smartphones in width from 2.45 to 4.52 inches, such as iPhone SE 11/11Pro/11 Pro MAX/XR/XS/X 8 Plus 7 Plus 6S Plus, also for Samsung Galaxy S9,S8,S7,S6 edge, Note 5 4 ,LG G5 G4 Nexus 6P 5X, etc. Whole part including top and base up to 11.02 inch, flexible part is about 4.5" and bent angle up to 270 degrees, which makes the cup phone holder much easier to be operated and access your mobile phone. You can adjust the height as you like, achieve maximum flexibility. 1 button on the back side, press it to release the wing. Put your phone on the phone slot and then push the wings to grip your phone firmly. close---2.5in, open---3.9in, twist to extend the base, perfect fit in most car, truck, van or any other vehicles with standard size beverage cup holders. NOTE: DO NOT PULL THE WINGS BY YOUR HAND DIRECTLY.