Here is another smartphone filmmaking cage that lets you take your vlogging and live streaming to the next level. The SmallRig Universal Mobile Phone Cage 2791 is ready for horizontal and vertical shooting. It has multiple 1/4-20″ threaded holes and two cold shoe mounts for your microphone, lights, and accessories.
This smartphone cage has an adjustable screw lock design and can accommodate phones from 2.6 to 3.4″. It has an aluminum alloy construction and two cable ties for cable organization.[where to get it]