mimoOn has demonstrated the 4G capabilities of its mi!TestMOBILE, a small and low-cost test mobile for the rapid deployment and optimisation of LTE networks. The R&S CMW500 wideband radio communication tester from Rohde & Schwarz was used for the demonstration. The new test mobile is a compact handheld solution for technicians in the field. Because its underlying hardware is reconfigurable, flexible and upgradeable, the tester can accommodate changing market needs, new 3GPP releases, and service-provider requirements. The solution offers advantages for all players in the mobile ecosystem. It affords infrastructure OEMs the ability to test their base station equipment prior to deployment and it allows handset and semiconductor OEMs to benchmark their reference designs prior to general availability. The CMW500 is a universal instrument for testing the air interface of wireless devices. This instrument can be used in all phases of product development and production and supports all common cellular and non-cellular wireless technologies. This instrument is used for RF and protocol tests.