This has to be the stupidest thing I have ever heard. As a die-hard Subnautica fan (I even enjoyed Below Zero, with all its plot holes, rewrites and general distancing from the first game) I don't know who in their right mind would ever want to play it on a mobile device. Spending time porting this to Android and iOS is just a waste.
The grandeur and depth (no pun intended) of Subnautica cannot be experienced on a phone. I'm sorry
As a diehard Subnautica fan with each game on each platform I own, I understand completely why someone would buy this for mobile