During mobile device manufacturing, to ensure the quality and performance of mobile devices, manufacturers perform Radio Frequency (RF) testing. RF testing at the production line is required to check product’s assembly and its working as per 3GPP specifications. Keysight EXM wireless test set is a hardware platform used for RF testing of mobile devices like cellphones and tablets. EXM is used with chipset automation software for automated testing of these devices. Currently, there are three main chipsets companies contributing for majority of the volume of mobile devices in India, and these are Mediatek, Spreadtrum and Qualcomm. NXT is a unified software platform for final stage RF test automation for mobile device manufacturers using EXM. It utilizes the multi- port capability of EXM in most optimized manner, thus improving productivity and reducing test time for volume manufacturing customers.