Every genuine mobile phone has a serial number to register it to a carrier network. This number is called the International Mobile Equipment Identity (IMEI) number. The IMEI number can be used to verify the legitimacy of a phone. Often counterfeit models won't have an IMEI number or use a fake one.
What is the cheapest phone made?
Freedom 251: A closer look at 'world's cheapest smartphone' An Indian company has launched what is being billed as the world's cheapest smartphone. Ringing Bells said their Freedom 251 phone would cost just 251 rupees or under $4.
How do you know what brand your phone is?
Check your phone's settings The easiest way to check your phone's model name and number is to use the phone itself. Go to the Settings or Options menu, scroll to the bottom of the list, and check 'About phone', 'About device' or similar. The device name and model number should be listed.