Universal smartphone compatibility with a spring-loaded X‑Grip cradle that securely holds most iPhone (11–17/Pro/Max) and Android phones (Galaxy, Pixel, Ultra) without blocking buttons or ports. Includes 2.5″ drill-down base with RAM B-Size (1") ball mount and medium arm, providing a stable, secure foundation for desks, workbenches, dashboards, or other flat surfaces where a rugged, permanent installation is needed. Secure, adjustable X‑Grip hold uses rubber-capped arms and spring tension for a snug grip; optional device tether adds extra peace of mind during rugged riding or off-road use. Rugged, durable construction with powder-coated marine-grade aluminum, high-strength composite, and stainless steel hardware to resist vibration and weather, backed by RAM Mounts’ lifetime warranty Easy one-hand operation lets you quickly insert or remove your phone, perfect for commuting, touring, and multi-vehicle use. The RAP-B-138-UN10U consists of a 2.5" diameter round base with the universal AMPS hole pattern, double socket arm and universal spring loaded X-Grip cradle for cell phones. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at the both ends of the socket arm; this with a twist of the arm knob, allows you can move the mount to your optimum viewing position. The included X-Grip cradle has a clean and clever four leg design that sports great holding power without hiding your phone behind foam pads and plastic. The spring loaded X-Grip cradle expands and contracts, allowing for a perfect custom fit of your cell phone. The perfect complement to the modern sleek interior of today's vehicles, the RAM X-Grip is the cell phone cradle evolved. The X-Grip includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size.