how do i use the app on itunes to find my iphone

The app is designed to work on your computer via your iCloud ID, you can log in to your iCloud account via your web browser, then log on to track your iPhone, iPad, Macs.

firefighter201... The device that is lost has to have had Find My iPhone service turned on in Settings > iCloud > Find My iPhone (Toggle ON) prior to being lost; that being said, iCloud had to have been also activated and signed into on the missing device.

If the above is true, then using another computer you go to iCloud.com > Sign in with the Apple ID/password used for iCloud on the missing device > Chose Find My iPhone web app button > All devices linked to that Apple ID will then be viewable on the map > Chose a specific device from the "Devices" Button (upper-left corner) > Then you can choose options > 1. Play a Sound ; 2. Lost Mode (lock with a passcode of your choice) ; 3. Erase iPhone (this wipes all data, last resort!!!)

Find My iPhone App: Download from the App Store onto any iOS device and repeat the instructions as seen above when you sign in with the same Apple ID.

**Important** For the device to be locatable or for the chosen option to take effect the device has to have a cellular or wifi connection, if it is not locatable using the "Lost Mode" option will alert you via e-mail when it does become locatable.

I hope this helps! 😀