Mobile field test engineer with proven experience in smartphone testing, device validation, and wireless communication technologies. Skilled in 3GPP standards (3G/4G/5G), test case design, log analysis, and defect tracking. Strong knowledge of Android and iOS platforms and hands-on with mobile device testing tools (ADB, QXDM, Wireshark, Mediatek tools). Delivered measurable improvements including 20% faster defect resolution and 15% efficiency gains in test execution. Strong background in network protocols, interoperability testing, and quality assurance with ability to work independently and in cross-functional teams.