All mobile phones have a unique identification number called an International Mobile Equipment Identity (IMEI). It’s kind of like an Aadhar Card for your cell phone. It’s a fifteen digit number that you can often find printed on the back case of your mobile. In this article, we are going to discuss what significance this number holds and why it is needed. As mentioned above, an IMEI number serves as the identification for a mobile device. Single-SIM devices have one IMEI number while Dual-SIM devices have two. So how is it useful? Well, using an IMEI number, concerned authorities can find out details about your mobile device just like the police can find out details about us using our Aadhar ID. This becomes especially useful in the event of you losing, misplacing, or getting your cell phone stolen. Using your IMEI number, authorities(in this case your carrier) can block flag your cell phone and prohibit it from making or receiving calls, texts, or even connecting to the internet. Similarly, an IMEI number can be used to find out whether a used cell phone is blacklisted or not.