A high-speed chase. A massive traffic accident. A natural disaster. First responders must be ready to communicate at a moments notice in any situation. The new APX 8500 all-band mobile radio combines unlimited interoperability, secure WiFi connectivity and purpose-built design, enabling ease of installation and removal. It can easily connect to the VML750 LTE vehicle modem via the micro USB interface and utilize the (4G/3G) commercial network to create an in-vehicle ecosystem for offloading data applications in the field, increasing the safety and efficiency of public safety users in and around the vehicle.