Okay I will admit that I did try to balance the Ronin SC with the phone mount right when I got the Ronin SC. I had the Sony a6400 on it with the Sigma 16mm...and I could not get the gimbal to balance with the phone attached. It was so frustrating. I gave up and forgot about it. Then my daughter wanted me to do some tracking of her for her kids YouTube video so I decided to finally figure it out. It did take some time but I can now safely say I can balance the Ronic SC with the phone mount without any problems. It's still a bit trick but it is possible. Hopefully this video will help. Don't get too frustrated.