The SmartphoneGrip is suitable for smartphones with the following dimensions: Length 123-175 mm, width 67-88 mm, height 6.8-13 mm (incl. case and camera bulge) and maximum weight of 276 g. Whether the iPhone 16 Pro Max with case fits depends on its exact dimensions - we currently have no specific data on the iPhone 16 Pro Max. Please check the dimensions of your device including case against the manufacturer's specifications or use the Bosch template to check the size. Flip cover cases are not compatible.