[header] How to find your mobile phone's serial number without taking it apart [title] Use the serial number when contacting the manufacturer. [step] The company that made the phone hardware gave your device its own serial number. This is usually just labeled " serial " wherever it is found. 
[title] Use the mobile id when contacting the phone service company. [step] Each wireless device with phone capability also has a second number, unique among all phones in the world.