While DJI is not the first phone gimbal with a folding design, it's the simplest I've used. Unlike some gimbals with lots of twists and latches, this is one piece. Extend it and you're ready to go. Fold it up—even with your device still attached—and it's ready to pack away.
The foldable design also makes the Osmo Mobile incredibly easy to carry around. If you opt for the slightly more expensive bundle ($139), the handy carrying case fits easily in a bag. The gimbal itself weighs just over 14 ounces and fits any phone between 2.5 and 3.5 inches wide (62–88 millimeters). I tested it with a Motorola Moto X4, Sony Xperia 1, and an iPhone 8, which all fit, though I had to remove the X4's case.
Mounting your phone is also simple. There are no screws—just a spring-loaded tension grip. It feels plenty secure and can fit larger phones than the previous model, meaning those giant Galaxy S10 phones should do just fine (again, thick cases may not fit). DJI says the new mount design decreases the chances of the mount pressing your phone's hardware buttons since it has a lighter grip and holds onto a smaller area of your phone's edge.
The design gives you easy access to your phone's charging port and headphone jack (if it has one, that is). You could add an external microphone to your setup for improved sound quality, something vloggers will be happy to hear.
The front handle trigger mechanism is also back on the Osmo Mobile 3—a feature that the first-generation Osmo Mobile had and the Mobile 2 dropped. The trigger now lets you lock the gimbal, re-center, track, activate "sport" mode (more on that in a minute), and switch between front and back cameras.
There are two other buttons and a joystick under your thumb—enough controls that you can operate the Osmo Mobile almost entirely with one hand. There's plenty about DJI's Mimo mobile app that requires two hands, but I almost never needed to use a second hand when I was actually filming.
DJI claims 15-hours of battery life and that's what I've seen while testing. Along with that battery life comes a new full-size USB port that can charge devices from the Osmo. I was happy to sacrifice a few hours of gimbal time to keep my phone going since nothing drains your phone quite like shooting 4K video. It's also worth noting that the Osmo Mobile 3 support USB-C for fast-charging on devices that support it.
Easy isn't always better. My least favorite new feature is the quick swapping between vertical and horizontal orientations. All you need to do is tap the lower button twice and your phone will rotate into vertical mode. But seriously, don't do that. The world does not need more portrait-mode video.
Smart Software
While the gimbal hardware is impressive, most of what I like about the Osmo Mobile comes down to software in the DJI Mimo app. The intelligent filming features like ActiveTrack, Hyperlapse, and Motionlapse all make it easier to get great video results, even from a phone.
ActiveTrack in particular works incredibly well. All you have to do is tap and drag a box over the object you want to track and the app will do the rest. In my testing, it easily handled situations where you lock onto a fixed object and move around it, and when you lock on a moving object and the gimbal tracks it.