GripTight Mount XL for Large Smartphones From JOBY - Attach Your Phone to Any Tripod or Mount Using a 1/4"-20 Screw Adjustable grip fits smartphones between 2.7-3.9 in | 69-99mm wide. Portable design for on-the-go: lightweight and pocket-sized form that can also attach to key ring or camera bag Reliable grip on phone: rubber pads secure device in place, even when turned sideways