This portable phone stand for desk compatible with all 4″-8″ cellphones and e-readers.can be adjusted angle & height to help you find the right angle. The height is 4.95 to 6.43 inch adjustable, while the angle of the upper bracket is 0-120 degree adjustable and the support stick can be adjusted from 0-90 degree. Our cell phone holder is built in iron plate, with aluminum alloy as the brace, the shell is PC / ABS material, the bottom has non-slip silicone foot pads + silicon back pad.