What should I do if my iPhone get stolen?

[ItsReallyMe]

What are the things I should do if my iPhone gets stolen?
Whom should I contact to disable the device and get it back etc?

 

[Burrito]

If your iPhone, iPad, or iPod touch is lost or stolen

1. Sign in to icloud.com/find on a Mac or PC, or use the Find My iPhone app on another iPhone, iPad, or iPod touch.
2. Find your device. ...
3. Turn on Lost Mode. ...
4. Report your lost or stolen device to local law enforcement. ...
5. Erase your device.

If your iPhone, iPad, or iPod touch is lost or stolen