Find your child's phone
A supervised child's eligible device may appear in a family device list. Set up the feature with the child's account and the platform's family controls ahead of time.
What to do
First, check
Check whether the child's device is actually enrolled and visible in the family service.
Then
Use the official family view to locate or secure the missing phone, and explain the settings to your child as appropriate.
If it’s not that simple
Confirm supervision and prerequisites first
Device enrolled
Check that it actually appears in the supported family service.
Device offline
Read the service status; do not promise current coordinates.
Immediate concern
Finding features are not a guarantee of safety or a replacement for appropriate help.
Good to know
Family controls vary by age, region, device and account setup.
Official source
Google Families Help · child location