low social media activity; rarely checking in
Internet slang describing someone who is not very active on social media, rarely posts, or seldom checks in. Often used self-deprecatingly or to describe a friend's online habits.
I've been on low activity lately and haven't been checking social media much.
He's rarely online, so don't worry if his replies are slow.
Compound of 低 (low) and 浮上 (surfacing, coming online). Likely coined in online communities to describe infrequent social media activity.