I tested the Vivo X300 Pro cameraphone in November 2025 and loved its overall performance and its huge detachable zoom lens. At Mobile World Congress 2026, the company is back with the X300 Ultra, a camera phone aimed squarely at video producers wanting to take the movie-making world by storm. I got to take a close look at the phone on the MWC show floor, but Vivo is keeping a lot of information about it secret, including the price and availability. But there are a few bits of gold I was able to mine.
The X300 Ultra will have a similar trio of cameras as the Pro model I tested last year and will support the same massive telephoto lens, except you can also get it with an even bigger lens offering up to 800mm equivalent focal lengths which should make this a beast for sport or wildlife photography where you don't want to get too close to the action.
This camera grip will make holding the phone much more comfortable. Andrew Lanxon/CNET
Overall camera specs aren't clear, but Vivo has spoken about its video credentials. First, it supports recording at 4K resolution and at 120 frames per second from all of its cameras, not just the main camera. It also shoots in 10-bit Log and Dolby Vision, which should allow for wide dynamic range in the video files and much easier color grading in post production. To help in color grading, you can load LUTs (basically color filters the video pros use) onto the phone to preview the look as you're shooting. That's a helpful addition and something more commonly found on pro-level video monitors.
In its press release, Vivo talked about its color science and better ability to color balance footage from the phone with footage from regular cinema cameras, something I struggled with when I recently put the iPhone 17 Pro against a professional cinema setup. The phone also features advanced stabilization and better microphones for higher quality audio, although if you're that bothered about cinematic quality you'll almost certainly be using external stabilisation (like a gimbal or a tripod) and certainly external microphones.
If you want to use it on a proper production set, maybe you need to rig it up on a tripod like this. Andrew Lanxon/CNET
To that end, Vivo also showed the phone off with a bunch of accessories from Smallrig, including a cage for mounting accessories like handles, lights and microphones, which were all present and correct on the models I saw. While Vivo said these are part of the phone's ecosystem, they are all commonly available components from SmallRig (albeit with Vivo branding) so I'm not sure whether there's anything bespoke for the phone here.
I'm looking forward to seeing more from this phone and certainly keen to get it into my hands to see what sort of video quality I can get from it. As a YouTube creator, I'm always on the lookout for ways to up my production quality without carrying heavy gear, and the X300 Ultra might be the phone I need. That, or the wild robot phone from Honor.