Capturing RAN performance has never been easier. XCAL-Mobile is a leading handheld air interface monitoring tool that enables QoS and QoE testing across all GSM / CDMA / EVDO / WiFi / LTE / LTE-A / NB-IoT / 5G NR technologies. It supports extensive application testing and delivers real-time network measurement and visualization capability in smart devices. All features can be controlled using the normal handset keys, which means anybody can use it. XCAL-Mobile supports all major smartphone and can be extended to include Android devices.