SmallRig x Brandon Li Mobile Video Kit: Turn a Phone Into a Cinema Rig

Phone cameras record cinema-grade footage, but holding a bare phone produces cinema-grade shaky. The SmallRig x Brandon Li mobile video kit answers with hardware: an aluminum cage that locks the phone, two rotating grips that spread the weight across both hands, a 67mm filter thread for real glass in front of the lens, and mounts that swallow a wireless mic and LED panel. Brandon Li puts his name on travel-filmmaking rigs for a living; this kit compresses his setup into a single package.

🏷 SmallRig x Brandon Li kit Video Kit on Amazon → · Cage Only →

The Cage: Aluminum, Magnetic, Threaded

The heart of the kit is a CNC aluminum cage specific to each phone model. It locks the body at the corners, leaves every button and port reachable, and adds three things a bare phone lacks: a 67mm filter thread over the camera, cold shoe and 1/4-20 mounts on every face, and a magnetic quick-release plate that snaps into the grips without threading screws.

The magnetic mount is the quality-of-life upgrade. Swap the phone from cage to tripod plate to car mount in a second, and the alignment repeats exactly, so filters and framing stay consistent across mounts.

The Grips: Rotating Arms With Wireless Control

Two arms extend from the cage sides, each ending in a rubberized grip. The arms rotate 360 degrees and lock anywhere: both grips low for a chest-height walk, one high one low for a raised angle, grips folded back for a single-hand hold. The right grip carries the wireless controller: shutter, record, and exposure dials that pair over Bluetooth through SmallRig’s app.

🏷 Grip and cage parts Side Handles →

Two-handed holding is the stabilization story. Arms absorb vertical bounce, elbows lock against the torso, and the phone software smooths the rest. Walking shots that demand a gimbal with a bare phone come out steady straight from the rig.

Filters: Real Glass in Front of the Lens

The 67mm thread accepts the filter that phone video needs most: a variable ND. In daylight, phone cameras hit minimum ISO and fastest shutter, and video looks stuttery without motion blur. An ND filter darkens the input and restores natural motion blur, the difference between phone footage that looks like phone footage and footage that looks like film.

🏷 67mm ND filter ND Filters →

The thread also takes a polarizer for glass and water reflections, and anamorphic adapters for widescreen flares. Filter changes happen at the front of the cage without removing the phone.

Audio and Light: The Mounts Earn Their Space

The cage top carries a cold shoe for a wireless mic receiver, visible in the setup with a lav transmitter clipped at the cage edge. The phone records the feed through the mic’s USB-C or the manufacturer’s app. The LED panel on the top shoe fills faces at dusk and indoors; its magnetic back snaps to the cage or any metal surface.

USB-C passthrough on the cage bottom routes charging and audio while everything is mounted, so a power bank keeps the phone alive through a full shooting day.

Who should buy this kit?

Travel and documentary shooters who film handheld for hours and refuse to carry a gimbal. The rig weighs a fraction of a gimbal-plus-phone setup, never needs balancing, charges nothing, and never runs out of motors mid-shot.

Vloggers and interview shooters who want mic, light, and filter mounted at once without a stack of clamp-on adapters. The cage integrates all three, and the magnetic plate moves the whole assembly between mounts intact.

Anyone who bought a flagship phone for its camera and suspects the hardware does more than the naked hand can hold steady. It does, and this is the hardware.

Verdict

✅ Pros:

• Aluminum cage locks the phone and adds 67mm filter thread
• Magnetic quick-release moves phone between mounts in a second
• Rotating wireless grips stabilize walking shots without a gimbal
• Mounts swallow mic, LED, and power bank simultaneously
• USB-C passthrough routes charging and audio through the cage
• Model-specific fit for iPhone 15/16 with universal Android options

❌ Cons:

• Price approaches an entry gimbal, and the two do different jobs
• Model-specific cages need replacing with each phone upgrade
• Two-handed grip blocks phone touchscreen access mid-shot
• Wireless grip control needs the SmallRig app running
• Full kit with filters and mic approaches dedicated camera cost
• Rig adds visible bulk for shots where the phone should disappear

🏷 Build the rig SmallRig Rigs →

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