It can be another iPhone, an iPad, or a Mac, but you need to make sure that device uses the same Apple ID as your lost iPhone.

Open the Find My app on your other Apple device.

Your other Apple device can give you directions with the help of the Maps app. With the help of the Find My app-which is part of Apple's Find My network-you should be able to see the last known location of your iPhone. * The Find My network is an encrypted, anonymous network of hundreds of millions of Apple devices that can help you locate your device.If you have an iPhone, chances are you also have a different Apple device. Then select Location Services, select the Enable Location Services checkbox, and make sure that the checkbox next to Find My is selected. In earlier versions of macOS: Go to System Preferences > Security & Privacy, then click the Privacy tab and, if the padlock in the lower left is locked, click it and enter the name and password of the administrator.

Next to System Services, click Details and make sure Location Services is turned on for Find My. In macOS Ventura: Go to System Settings > Privacy & Security > Location Services.If you want to be able to find your lost device on a map, make sure that Location Services is turned on: To make sure that you can find your Mac if it's ever lost or stolen, check that Find My Mac is On and Find My network is On.* In earlier versions of macOS, click Options to check that both are turned on.Scroll down, click Find My, then click Turn On.Under Apps Using iCloud, click Show All.In earlier versions of macOS, click Apple ID, then click iCloud. In earlier versions of macOS, choose Apple menu  > System Preferences. Choose Apple menu  > System Settings.

Find iphone