Review: This pocketable iPhone camera grip offers camera-like functions
Amazon.com: FJORDEN Camera Grip for iPhone - Basic Bundle - Includes Adhesive Adapter (not MagSafe Compatible) - Turn Your iPhone Into A Real Camera : Electronics
Mymiggo PICTAR One Plus Mark II Smartphone Camera Grip : Amazon.in: Electronics
Camera Controls for your iPhone – Fjorden Grip | CineD
This battery grip turns any smartphone into a full-fledged professional DSLR camera - Yanko Design
Fjorden: Faster camera controls, now on your iPhone