Please choose the correct ending to complete the given sentence: Computers and Electronics: [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.

Ending1: [substeps] If the phone wasn't exactly sold, it might have been saved somewhere connected to the internet. You can find any contact information for the company by searching for " serial " on an internet search engine. Ending2: [substeps] Minocycle.com (http: // consumer. Minocycle.com) the. Ending3: [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. Ending4: In modern phones, the serial number is represented by the letters " 2. " replace this with a more complicated combination of digits which the manufacturer describes as the serial number.

Answer format: ending1/ending2/ending3/ending4