Stress Testing and Compatibility: Conduct recurring stress tests on Android mobile phones and fusion products, ensuring compatibility with local third-party applications. Fault Analysis and Troubleshooting: Independently analyze fault logs reported by users, troubleshoot code based on log analysis, locate root causes, and provide solutions, either independently or with headquarters' assistance. R&D Support: Assist the R&D department at headquarters by deploying problem analysis and locating tools, accumulating and building problem-locating capabilities. User Site Visits: Travel to user sites when necessary to diagnose and resolve user issues.