The duties of a Cell Phone Repair Technician are to troubleshoot issues with mobile phones, diagnose the cause of a particular problem, then replace parts or perform software updates to repair the device and restore it to full functionality.

Mobile phone repair technicians run tests to assess the mobile phones' functionality, install and update phone software, troubleshoot wiring problems, and replace damaged parts and components such as batteries, LCD screens, keypads, buttons.

Examples of Cell Phone Technician duties are greeting customers, identifying cell phone problems, fixing issues, running tests, assessing functionality, replacing parts, and maintaining repair records.