Use Find My iPhone on iCloud.com on your iPhone
Find My iPhone on iCloud.com helps you locate your Apple devices using information stored in iCloud.
What can you do in Find My iPhone on iCloud.com on your iPhone?
Sign in: View the location of your devices by signing in with your Apple ID and password, even if you lost your trusted device. See How to sign in to Find My iPhone on iCloud.com.
Locate devices: See the location of your iPhone, iPad, iPod touch, Mac, Apple Watch, or AirPods on a map.
Play a sound: Play a sound on a lost device to help you find it.
Mark a device as lost: Use Lost Mode to protect a lost device so that others can’t access your personal information. Display a custom message on the device’s screen, telling people that the device is lost or how to find you. Once you find the device, you can turn off Lost Mode.
Erase a device: Remotely erase all of your personal information from the device. Activation Lock remains on to protect it.
Remove a device from your account: If you’re no longer using a device, remove it from your account so it doesn’t appear in Find My iPhone.
If you’re using another feature on iCloud.com, you can switch to Find My iPhone by tapping the feature’s name in the top-left corner of the iCloud.com window.
If you don’t see Find My iPhone on iCloud.com on your iPhone, your account just has access to iCloud web-only features. To use Find My iPhone and other features on iCloud.com, set up iCloud on your iPhone, iPad, iPod touch, or Mac.