On Android, you can check screen time using Digital Wellbeing option found on settings.
1. Open Settings → Digital Wellbeing & parental controls.
2. Tap on screen-time chart to see total usage, time spent on individual apps, number of unlocks, and notifications.
3. Since this is your son’s phone, a better option is Google Family Link. On your phone, open Family Link → select your son → Screen time to see his total screen time and app activity.
4. You can also use Family Link to set daily screen-time limits, app-specific limits, and downtime schedules.
However, for a 15-year-old, Family Link is the better choice because you can monitor and manage screen time from your own phone rather than checking his device manually.
