The clip holder can be expanded from 2.17" to 3.37" (5.5cm to 8.5 cm) wide, which made it compatible with most smart phones, such as: iPhone 8 8 Plus 7 7 Plus SE 6S 6 Plus 5S 5C 5 4s 4 as well as Samsung Galaxy S7 S6 S5 S4 S3 S2 and many other,Thanks to the PVC rally glue, your phone screen is untouched by the tripod connector, so you don't have to worry about scratching, cracking, or leaving marks on the screen; Both sides of the card slot and the front are equipped with cushions, two-tier reinforced sponge fixture, prevent your device from falling down and anti-shock.