Arkon’s XL131 RoadVise XL clamp post mount fits devices with cases measuring up to 5 inches wide, including Apple iPhone XS Max, iPhone XS, iPhone XR, iPhone 8 Plus, iPhone 7 Plus, Samsung Galaxy Note 9, Note 8, and Note 5, Galaxy S10, S9, and S8, LG G6, G5, and G4, Nexus 6 and Nexus 5, Nokia Lumia 1520 and 1020, Motorola Moto G and Moto X. This mount is not recommended for phones without a case measuring 2.64 inches wide or less, including iPhone 8 or iPhone 7. It also fits midsize (7-8 inch screen size) tablets, including the Galaxy Tab A 8.0, Galaxy Tab E 8.0, Galaxy Tab S 8.4, Galaxy Tab Pro 8.4, Galaxy Tab 3 7.0 and 8.0, Galaxy Note 8.0, iPad mini, and Nexus 7. This heavy-duty mount can be installed on a wheelchair, microphone stand, or other posts 12 to 40mm in diameter. The device holder rotates on the pedestal’s swivel ball adapter head for 360-degree positioning of the device. The holder’s solid construction provides strength and reliability by featuring a spring-loaded mechanism that expands to hold devices up to 5 inches wide. Arkon recommends using the RoadVise Holder with skins and ruggedized cases. The RoadVise is designed to use two hands to install and remove your device. This is to make sure your device cannot be accidentally removed while adjusting viewing angle. The low-profile holder keeps rear smartphone cameras free for spontaneous pictures or videos.