A found phone has somebody’s whole life on it. Be the reason they get it back.

A lost phone is not an object, it is somebody’s photographs, messages and access to everything else they use. Whoever lost it is having a genuinely bad day, and you are the one person able to end it. The effort involved is small and the relief you can produce is large. Very few chances come with that ratio.

Hand it in, or find the obvious contact and reach them. Do not look through it beyond what is needed to do that. Being the reason someone’s day turns around is worth twenty minutes of your afternoon.