Additional features, settings, or issues not covered by specific Microsoft Teams categories
I have this same issue
My MS teams on mobile supersedes my activity/status on desktop.
I can be actively using MS Teams on the desktop however it shows me as away as my phone has locked and is inactive
When working from home this can easily make me look like I am unavailable/away when in fact I am actually sat at my desktop actively using MS teams
The desktop app will not then allow me to manually change my status.
Reading some of the comments that say they status between desktop and mobile are not dependent to each other does not make sense as to any external viewer you only have 1 status so they must be connected.