Question about Zhiyun Smooth 4 Smartphone Gimbal

On my P9 it works

Using it with a Samsung S8 and works quite well except for the bluetooth 'hang ups'. Unfortunately I can't change the resolution to 60 frames even though the phone is configured that way. Think this is also a problem with the app. Have googled and found nothing in this regard.

See under "Description" and compare the features.

In theory, yes, it works with my Galaxy S9+, but at the moment their app is still relatively unusable on Android in general, because many functions don't really work. They are busy updating, let's see how it looks in a few months.

There you go: https://www.zhiyun-tech.com/ZYPlay
Look under "Description" and compare the features.
- Make sure that on Android (6.x or higher) you grant all the permissions that the ZY app needs.
See section: Permission Description

Can you also use a GoPro Hero 3 Black. Use it with it?