Hello. My name is Michelle and I will be assisting you today.
Every mobile phone on a GSM network has an individual International Mobile Equipment Identification number that is unique to it, and can be conveniently located with the right software. With this IMEI number, police can work with your service provider to retrieve a stolen phone while your service provider can block your mobile phone from functioning to ensure that you are not charged for a thief’s phone calls.
Check these links: http://trackingmobile.co.uk/category/lost-phone/