This is my first gimbal and one of the reasons I bought decided to buy this was simply that Smooth 4 seemed to give enormous value. After reading a series of tests that compared it to "main competitor" Dji Osmo 2 Mobile, I ended up on this.
It took a while before I understood how the gimbal itself works, and you need to do some Google search for help as the manual is not helpful. But there are plenty of videos online :). The stabilizer itself works excellent, and all the features it offers besides the actual filming is simply amazingly good! It comes with a small tripod foot that allows you to use the entire boom as a tripod. Amazingly practical when using one of the more advanced photo features.
All in all, this is a product that I almost do not understand how so reasonable, because it's simply amazingly good. You do not become a pro filmmaker just by buying a gimbal, but by investing in this case, it's not at all the equipment it's on :). The instructions could be better, but the product itself, the connection to the mobile, and the result of movies and photos are very good. Unfortunately, the iPhone can not be charged at the same time as movies are being flown as the charging port faces the device itself. Do not think this is a problem on Android phones, and it's possible that you can "trick" a link on the page.
I will continue to test the product as it takes time to get to know it.