Anecdotal, but every single plugin I've ever used works perfectly on android

Most plugins do afaik. I am using plenty!

I started experimenting yesterday and I was delighted that the templater strings I set up at my computer were functioning on my phone. I’m excited about it because the lack of good system wide text expansion on the phone has been frustrating for me, and it looks like using obsidian will be a way to define pretty complex templates and be able to create and edit notes on my phone using them.