Tips:1. This item only works with Android 4.0 and above 4.1,4.2 system phone, does Not support iOS system; Support Android Phone which has OTG and UVC function (At present, mainstream brands of Android phones can generally be supported. Your smart phone must be Genuine which have license and support external camera, make sure that it will not shield the external camera).2. How to detect whether the phone has OTG function: a.You need to have an OTG cable. b.Use the OTG cable to connect phone with some equipments like keyboard, mouse, U disk, and then you can use it normally, it means that the phone has OTG function.3. This camera is near focus distance camera, the focus distance is 3cm to 8cm. if the focus distance over 8cm, it can't get the clear picture.