The Manfrotto TwistGrip mobile holder isn’t the first mobile holder I’ve used, but it’s certainly the most premium!
Typically these holders tend to be plastic and a bit of an awkward shape to actually carry around or store. No such issue with the TwistGrip, it’s smart design sees this collapsing down flat when not in use, making it easy to pop into a pocket or bag. The transformation is very smooth and it’s rather an addictive action.
Mobiles are held in place via grippy pads and you need to manually lock the grips in place (see my review video for a demo of this).
There is a standard tripod thread allowing you to use this with all sorts of equipment, from mini or large tripods to C shape camera holders, and on top is a standard cold shoe mount that can be used for things like lights or microphones.
Pricey, but comes with the a quality build quality to match.
Available from Amazon UK: https://amzn.to/1UHpuOi and Amazon USA: https://amzn.to/1rgGBMH
