Find my device features was off in my phone so how can I track

To use FindMy your device must be connected to a network, powered, and FindMy must be enabled. To turn it off required your Apple ID and password. It's likely your device is just powered off.

If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support

SunilPandey1980 Said:

"Find my device features was off in my phone so how can I track: My 13 pro Max was stolen 2 days back find my device features was off how can I find it"

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Refer to the link provided atop this post.