Importance of Cell phone During COVID-19 Period

I used to be on my smartphone for four or five hours a day, and I would check my notifications a couple of times an hour.  But now, thanks to COVID-19 I’m glued to my phone all the time – sixteen hours, twenty, or more. I can’t come off and it’s always on.  I feel maybe I’m missing something important if I put my smartphone down.”  Use one relevant theory to explain this situation.