So what if you attach the Osmo Pocket to an iPhone and mount the iPhone on an Osmo Mobile? Someone please make a comaparison video.

What is the point of that? lol

I just checked. It's impossible to balance the Osmo Mobile 2 properly, it will just power off.

Hi phatee, that is impossible, if you connect iPhone to Osmo Pocket via the lightning adapter, there would be no enough room for Osmo Pocket when mounting on Osmo Mobile, and there is no way to get them balanced.

Hi Phatee, we do appreciate your interest in our products. Unfortunately, it is not possible because you cannot balance the Osmo mobile properly due to the weight of the Osmo Pocket since Osmo mobile is dedicated only for mobile devices only. If you need further assistance, please don't hesitate to contact us. Thanks for your support.

I am sure someone could make a bracket to mount the pocket to the mobile 2...  like the adapters for gopro etc.. don't know why you would want to :-)