In this paper, the performance of Bluetooth Low Energy is studied under different Wi-Fi interference. Two aspects of BLE performance are investigated, namely reliability and throughput. According to the practical experiment results, both the reliability as well as the throughput are highly impacted by Wi-Fi interference. Besides, a new discovery is that the impacts of interference on the two performance aspects are not proportional to one another. This research can be utilized by other studies as a proof or cornerstone.