SmallRig Universal Phone Video Rig 2791B – aluminium vlogging phone cage for iPhone, Samsung & Huawei

What it is and why you’d want it

SmallRig’s Universal Phone Video Rig 2791B is a phone “cage” system for vloggers and videomakers who want more control than you usually get from holding a phone freehand. The idea is simple: your smartphone sits securely in a rigid aluminium frame, while the rig gives you proper attachment points for accessories like a tripod, side handle, lights, and a microphone.

On paper, it’s aimed at people who shoot on a smartphone but don’t want to compromise on stability, angles, or add-ons. If you’re filming product demos, walking-and-talking vlog segments, interviews, or timelapse-style shots where you need consistent framing, this kind of rig can make the setup feel a lot more “camera-like” without forcing you to buy a whole new filming system.

What stands out in day-to-day use

The most practical benefit here is the combination of secure phone retention and versatile mounting. The cage uses a screw lock for quick grip and release, and it’s designed to fit phones that are roughly 67 to 86mm wide (2.6"–3.4"). That range matters because “universal” often means “universal until it doesn’t”, and with this one you at least get a clear width window.

You also get multiple mounting options: several 1/4"-20 threaded holes plus two cold shoe mounts. In real filming terms, that translates to fewer compromises when you’re building a rig for your specific workflow. For example, you can mount the phone cage onto a tripod or slider, then add a side handle for a more balanced grip, and attach a microphone via the shoe area (or use a compatible adapter depending on your accessories).

The included cable ties are a small detail, but they’re genuinely useful. Phone setups can turn into a cable mess quickly, especially when you’re moving between handheld shooting and tripod/slider work.

Key features to consider before buying

This rig is made from aluminium alloy. That’s a sensible material choice for a phone cage: it’s lightweight enough to carry around for filming days, but still sturdy so your phone is held firmly instead of wobbling.

It’s also designed to mount both vertically and horizontally. Being able to rotate your phone between portrait and landscape matters if you edit for different platforms or if you’re switching between selfie-style framing and wider shots.

One limitation to keep in mind: since it’s universal, you’re relying on the phone width range and your accessory setup. If your phone case is bulky or your preferred accessories need very specific mounts, it may take a bit of tweaking to get everything sitting the way you want.

Tech specs

• Name: SmallRig Universal Phone Video Rig for iPhone for Samsung for Huawei – 2791B
• Type: Universal phone cage / vlogging rig
• Material: Aluminium alloy
• Phone fit width: 67 to 86mm (2.6" to 3.4")
• Mounting options: Multiple 1/4"-20 threaded holes
• Accessory mounts: Two cold shoes

Who it suits (and who should pause)

It’s a solid fit if you want to shoot smartphone video with more stability and more accessory options, whether you’re doing YouTube-style content, casual vlogging, or client work where you need consistent results.

It makes sense if you already own (or plan to use) a tripod, slider, or stabiliser that supports 1/4" screws, plus any mix of lights, microphones, or handles you’d like to add on.

It may not be the best choice if you’re expecting a fully “tool-less” system. There’s a screw lock for securing the phone, and while that should be fast, it still isn’t the same as snapping a phone in and out instantly. Also, if you’re only ever filming occasional clips and you’d rather not build a rig, this is likely more than you need.

Getting the most from it (practical setup example)

A typical use case: you’re filming a vlog in a room. Mount the cage to a tripod, attach a microphone using the cold shoe area, and add a small LED light if needed. Then switch orientation to portrait for a talking-head shot without re-rigging everything.

For outdoor walking-and-talking segments, you can use the handle grip on both sides for a more comfortable, balanced hold. That’s the kind of detail that can reduce fatigue and keep footage steadier than a bare handheld grip.

Is it worth it?

This SmallRig 2791B is worth considering if you want a versatile, aluminium phone cage that turns your smartphone into a more controllable video rig, with clear mounting options (1/4"-20 holes and two cold shoes) and a stated phone width range.

You may want to skip it if you rarely film long takes or you don’t plan to use accessories like tripods, microphones, or lights, because then you’ll be paying for a system you won’t fully use. It’s not a “set and forget” miracle—more a practical filming tool for people who like building a setup around their content.

Mini FAQ

Compatibility: will it fit my phone?

It’s designed to fit most smartphones within a width range of 67 to 86mm (2.6"–3.4"). The description also lists several iPhone, Galaxy S, and Huawei P series models, but the most important practical check is the phone width.

Can I mount it on a tripod or stabiliser?

Yes. The rig is designed to mount vertically or horizontally onto tripods, sliders, or stabilisers using 1/4" screws.

What accessories can I attach?

You get multiple 1/4"-20 threaded holes and two cold shoes, so you can attach compatible accessories such as a side handle, LED light, and microphone setups (depending on the specific mount/adapter you use).

Is it good for handheld vlogging?

It’s designed for a balanced handheld grip by holding both sides of the handle, and it can also be used mounted on supports when you want steadier framing.

What’s included?

The cage is supplied with two cable ties to help keep your cords organised during shooting.