"Why do phones have an IMEI number?".

You might have wondered about this at some time. Why do phones have a long number written on the inside surface of your device or in the about section of your phone settings module.

First, IMEI means International Mobile-station Equipment Identity and is used to identify a device that uses common cellular networks. If you have a dual-SIM phone, you’ll see two IMEI numbers, one for each SIM slot which means that each slot has its own ID.

IMEI numbers have one principal purpose: To identify mobile devices. Their secondary purpose, or Unlock.Zone [http://wiki.lessdead.com/index.php?title=User:Bailey6241] intention, is to prevent theft. If a mobile device can be universally identified, a thief cannot change the SIM card on a phone and expect to keep the phone. IMEI numbers are hard-coded into device hardware, making it nearly impossible to change them without somehow damaging the device.

When a carrier knows that a device has been stolen, it can blacklist the cellphone IMEI unlock service code and lock it out of the network. Later on, it tells other cellular networks to do the same.

No, some illegally produced phones do not have IMEI numbers but these phones are difficult to come by in local markets. In 2010 India encountered problems with these devices, and they have tried to counteract the issue for years. The answer to the question is, "No, some devices do not have IMEI numbers, but they are often illegal."

The fastest method of checking the IMEI number on your phone is to open your keypad and type *#06#. Your IMEI number should pop up on your screen instantly. You won’t be able to copy and paste the number, unfortunately, so you’ll need to write it down separately to keep hold of it.

Alternatively, or if the last method doesn’t work for whatever reason, you can go to "Settings > About Phone > Status > IMEI Information."

Your IMEI number is also on the pack of your phone, so you can quickly check it out immediately and save it up securely.

Also, but if none of the above methods work, then you may be able to find your IMEI number on your SIM card tray, or if your phone has a removable cover, under the phone battery.

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