Find my iPhone -- or Find my iPod or Find my iPad -- keeps track of your iCloud enabled devices so you can track them down if they're lost or stolen, and even remotely message, lock, and erase it to keep your data secure.
Before you can use Find my iPhone (or iPod or iPad), you need to turn it on.
If you iPhone, iPod touch, or iPad goes missing, you can track it via the web on your Windows, Mac, Linux, Unix, or any PC running a modern web browser.
Devices that are trackable will a small green dot next to their name. Wi-Fi devices can only be tracked when they're connected to a known Wi-Fi network.
If you think you just misplaced your iPad or that someone borrowed it without asking, you'll want to play a sound or send a message.
The sound will be played and the message will be displayed on your iPhone, iPod touch, or iPad and will continue to play and be displayed until the device is unlocked and the alert dismissed.
If you think your iPhone, iPod touch, or iPad was lost or stolen and is unlikely to be recovered, you'll want to lock it and possibly wipe all data from it.
If your iPhone, iPod touch, or iPad has been misplaced, lost, or stolen you can also track it on a secondary device, or a friend's or family member's iPhone, iPod touch, or iPad via Apple's free Find my iPhone app.
If you still need help with setting up, tracking, messaging, locking, or wiping your lost of stolen iPhone, iPod touch, or iPad, or any other iCloud feature, head on over to our iCloud Forum and ask away!
Ally Kazmucha, Chris Oldroyd, and Gary Mazo contributed major sections of this guide.