RAM-HOL-UN10BU X-Grip Large Phone Holder - Secure, Adjustable Mount

Our review of the RAM-HOL-UN10BU X-Grip finds it is a purposeful, rugged phone holder for drivers and pilots who need a secure, fully adjustable mount that does not hide the phone. The single biggest reason to buy is its spring-loaded X design combined with a B-size 1 in ball interface, which gives near-infinite adjustability and a very confident grip on large phones even in rough conditions. Build materials and the optional tether make it a clear choice for demanding environments where reliability matters.

Key Features

• Spring-loaded X design: Holds phones from 1.75 in to 4.5 in wide while keeping the display exposed for easy access and visibility.
• B-size 1 in ball compatibility: Works with any B size RAM double socket arm so the holder can be positioned exactly where it is needed.
• Ball and socket adjustability: Allows near-infinite tilt and rotation for optimal viewing angles in cars, small aircraft, or boats.
• Durable construction: Powder-coated marine-grade aluminum, stainless steel, and high-strength composite resist corrosion and rugged use over time.
• Optional device tether: Adds peace of mind during off-road or turbulent use by preventing accidental drops.
• Lifetime warranty: Backed by a long-term warranty that supports durability expectations and product reliability.

Who It's For

The RAM-HOL-UN10BU is ideal for professionals and enthusiasts who need a secure, durable mount for large phones in vehicles, boats, or small aircraft. Its metal components and tether option make it suited to off-road drivers, delivery drivers, pilots, and anyone who expects vibration or movement during use.

Less appropriate for users who prefer a low-cost, disposable phone cradle or those who need an integrated charging dock rather than a simple holder. If you require a tightly enclosed cradle that hides the phone edges, this open X design will not match that preference.

Pros & Cons

Pros

• Very secure hold from the spring-loaded X design without blocking the screen.
• Robust materials and corrosion-resistant components for long-term reliability.
• Highly adjustable with the B-size 1 in ball and socket system for exact positioning.
• Optional tether provides extra security in rugged or turbulent conditions.

Cons

• Rubber caps can come off for some users, which may reduce grip if not noticed.
• Not a charging dock; depth limit of.875 in means very thick cases may not fit comfortably.

Specifications

Brand	RAM Mounts
Model	RAM-HOL-UN10BU X-Grip Large Phone Holder
Compatibility	Fits phones 1.75 in - 4.5 in wide
Maximum Depth	.875 in
Ball Size	B size 1 in ball
Materials	Powder-coated marine-grade aluminum, stainless steel, high-strength composite
Warranty	Lifetime warranty

Our Verdict

The RAM-HOL-UN10BU is a smart buy for anyone who needs a tough, adjustable phone mount that holds large phones securely without covering the screen. Its durable construction, B-size ball compatibility, and optional tether deliver value over cheaper plastic mounts, making it a sensible investment for active drivers and professionals who expect heavy use.

Frequently Asked Questions

Will this holder fit my large phone?
Yes, it fits phones between 1.75 in and 4.5 in wide and up to.875 in depth, so most large phones without very thick cases will fit.

Can I mount this to any RAM arm?
It is compatible with any B size RAM double socket arm that uses a 1 in B-size ball.

Is it weather resistant?
The powder-coated marine-grade aluminum and stainless steel parts provide strong resistance to corrosion and outdoor conditions.