I always wondered whether smartphones were the cause or smartphones just exposed the true nature of life, hence bringing depression with that realization.
The view of life through smartphone apps that have automatically adjusting skinner boxes purposely designed to get you addicted ("""engaged""" they call it) and have you churn through rage bait and """content""" is the least authentic depiction of reality that has ever existed, maybe only behind minstrel shows.
It's like when people call video slot machines "video games". No, not even close.