I use my computer most in general for browsing. I dislike browsing on my phone quite a bit tbh and only use it when there's no alternative and have to look something up quick.
I check any notifications on my phone, but tend to reply to threads on my laptop. I feel that sometimes it’s hard to navigate and edit texts, and writing with your smartphone means that you don’t have strike through or font change. I do sometimes write posts with my smartphone if it’s a question I want to answer right away though.