how do I help a friend find their missing iPhone

1. Open the Find My app on your phone, tap “Me”, then scroll down and tap Help a Friend.
2. You or your friend can log in to https://icloud.com/find with your friend’s Apple ID & Password.

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

the Find My app has an option to 'help a friend'

amandry555 Said:

"how do I help a friend find their missing iPhone"

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A Few Open Thoughts on Locating this Phone:

• Backtrack Its Used-At Locations:

Find out if it has been come across. If you were at a public location (i.e. a retail store, contact them, seeing if it was placed aside by the store manager.

• Contact Local Authorities:

Also, consider contacting local authorities, seeing if it was handed over. If someone is keen, then they would have handed, it over and not kept it for themselves.

• Dial or Text the Phone:

See what happens when you dial or text the phone. Who knows? You may hear it make some noise in the other room.