Essay
Boredom is information
It isn't the absence of stimulation. It's a signal about meaning, and it's worth reading before you reach for your phone.
Boredom is usually treated as a shortage of input. But you can be surrounded by input and still bored, which suggests the shortage is somewhere else.
The more useful reading: boredom is what it feels like when your attention is available and nothing present is worth spending it on. That is information about the situation, not a defect in you.