I was all ready to give the iSteady X 5 stars and an entirely favorable recommendation. It works so nicely in all its gimbal modes and is a real winner. But there's a serious problem for me in shooting video. I have a Motorola Moto G7 Optimo Maxx smartphone. It is also an excellent performer. But I bought it and the gimbal to shoot 4K video. The phone shoots 4K on its own, but when it's paired with the gimbal and is using the Hohem Pro app, no matter where the video settings are set, on both the phone and the app, it will shoot only 1280 X 720 video.However, if I close the Hohem app and open the phone's own camera app, it will shoot 4K video on the gimbal. It does quite well on the phone's own app, performing the basic gimbal functions. But I can't change the gimbal's modes and some of the controls don't work. I have to tap the photo/video selection on the screen and tap the screen to work the shutter and video start/stop. If I need to change the gimbal's modes, then I have to open the Hohem app and do that, then return to the phone's camera app. I just downloaded a firmware upgrade for the gimbal and I don't know what effect that had on this problem. Maybe Hohem will correct this 4K problem in another firmware upgrade? I wonder how many other smartphone models might have this incompatibility.