Offline Finding is much important setting which is highly recommend to turned on ...
This will allow your phone to be found by other people's Galaxy
devices even when it's not connected to a network. It will also allow
your phone to be used to scan for lost devices that may be nearby
You can also find wearable devices such as watches, earbuds
SmartTags or others if offline finding is on for your device and it was
the last device they connected to.
settings- security and privacy - find my mobile - offline Finding
