Bluetooth and Wi-Fi are supported as wireless interfaces by devices for various industries. Although both transmitter tests and receiver tests for RF interfaces are defined to guarantee the qualities, they are difficult for engineers who are not familiar with wireless tests. One of the difficulties for them is the complicated process to set devices to test modes. On the other hand, they have to take long time to identify the root cause when they face interoperability issues. At that time, they have to do RF test items for verification. In this session, the effective ways to use IoT wireless tester, which does not require the special setup of devices, for R&D and QA process driven by engineers who are not familiar with wireless tests.