IMEI - International Mobile Equipment Identity. Mobile phones, except the serial number have also IMEI number. The serial number is unique for each device from one manufacturer. The manufacturer assigns to each device a unique serial number, in which encoded all information about the product: model, production country, date of manufacture. SNDeepInfo - service for checking a serial numbers of phones, smartphones, cameras, household appliances and IMEI phones of all brands What is the serial number?