Find my iPhone is an incredible service offered by Apple as a region of iCloud victimization that you'll be able to track your iPhone, mackintosh or iPad if it ever gets taken or lost.

1. How To Locate Your iPhone When It
Goes Missing- ”Find My iPhone”

2. When your iPhone, the essential piece of tech that’s basically
become an extension of you, disappears somewhere without
a trace.
The Cupertino-based company has conveniently been
offering the Find my iPhone feature and accompanying
mobile app since June 2010, allowing users to remotely
locate, lock, or wipe their iPhone using iCloud or another iOS
device.

3. The software even works on other devices including your iPad, iPod Touch,
and even your Mac.
It won’t prevent you from losing your phone, but it may help you find it so
long as you active the feature prior to losing your device.
Step 1: Check the requirements
Although optimized for the iPhone 6 and 6 Plus, Find my iPhone is available
on all devices equipped with iOS 5 or later.
The utility is completely free and compatible beginning with the iPhone 3GS,
third-generation iPod Touch, iPad, iPad Mini, and all the latest versions
thereof.
A valid iCloud account is also required and devices that lack network
coverage must be connected to a registered Wi-Fi network to be located.

4. Step 2: Download and install the app
Tap the blue App Store icon located on your iOS homescreen, search “Find
my iPhone” within the Search panel, and select iPhone application from the
list of results.
Tap the blue Get button in the top-right corner followed by the resulting
green Install button to download and install the app.
Alternatively, download the app from iTunes and sync it with your iOS
device.

5. Step 3: Activate Find my iPhone
Once installed, tap the main Settings icon, followed the iCloud option near
the center of the Settings menu.
Enter your Apple ID in the resulting pop-up window if prompted, or tap Get
a free Apple ID and follow the onscreen instructions to set up your free
iCloud account.
Swipe to the bottom of the menu once signed in, select the Find My
iPhone option, and toggle the on-off switch to the right of Find My iPhone
before tapping the Allow option in the resulting pop-up window.

6. Step 4: Lose your iOS device
Obviously, this doesn’t come highly recommended, but finding your iOS
device once lost is likely the reason you chose to use the app in the first
place.
Step 5: Locate your iOS device
Once lost, you can either use another iOS device or your iCloud account
via the Web to locate your lost or stolen device.
Keep in mind it’s not possible to locate the device if didn’t activate the
Find my iPhone function before losing your device.
Using another iOS device
Tap the Find my iPhone icon from the home screen, enter your iCloud
login credentials in the appropriate fields.
Tap the blue Go option located in the pop-up window.
Once logged in, select the lost or stolen device from the list of devices
setup with Find my iPhone to view the device’s location.

7. Lost Mode that provides options for locking the device with a four-digit
passcode and displaying a contact phone number of your own choosing
directly on the lock screen.

8. Using your iCloud account on the Web
Open your favorite browser and navigate to the iCloud homepage before
signing in with your Apple ID and password.
Click the large Find My iPhone icon, click All Devices at the top of the
window, and select the lost or stolen device from a the resulting list of
activated devices.

9. Additional options for remotely wiping the phone and forcing it to play a
sound should appear in the upper-right corner, along with a intuitive Lost
Mode button that provides options for locking the device with a four-digit
passcode and displaying a contact phone number of your own choosing
directly on the lock screen.

10. Step 6: Take action
Once you locate your iPhone or iOS device, use one of Find my
iPhone’s built-in functions to help recover the device.
Tap the gray Play Sound button featuring the speaker to force the
your phone to play a high-pitched ping continuously for two minutes
or tap the gray Erase iPhone button followed by the Erase iPhone
confirmation to completely wipe your device of all content and user
settings.

11. If running iOS 6 or later, tap the middle Lost Mode button followed by the
Turn On Lost Mode confirmation before entering a phone number where
you can be reached.
Then, tap the green Next button in the upper-right corner, enter your
desired message in the text field, and tap the green Done button to enable
the message.

12. There’s no guarantee the ringing, erasing, or messaging will help you
get your device back — regardless if you know it’s precise whereabouts.
It may be wise to contact your service provider and the police, informing
them of the situation and your intentions to recover the device.
You never know when things might escalate like they did in San
Francisco back 2012.

13. Reference:
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14. Thank You...