Ever heard of IMEI ? Well IMEI or The International Mobile Equipment Identity is a unique numerical identifier for every mobile device. This number helps to differentiate each device from one another. If you take your smartphone in for repair they will track it using the IMEI to differentiate it from other smartphones.
You can check your IMEI by going to the dialer and tap in *#06#.
You should see this on your screen..
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If your device is lost or stolen, you can contact your provider who may be able to place a block on the IMEI number, preventing it from being used to connect to the network. Your provider may also be able to contact other networks, asking them to also block the device. Law enforcement often keep records of lost and recovered phones too, identified by their IMEI. This function may not be a day to day need...but there may be instances that they come in handy. So always keep your ID's
Have a great day guys...