The LEX L11 unifies traditional push-to-talk communications reliability with software applications that enable sharing of multimedia information. It provides public-safety use on LTE networks while also integrating with a two-way radio system. While phone-like it has all of the enhancements and capabilities expected from a public-safety-optimized device. It can be linked with a two-way radio to enable communications on an existing radio system. It can also be used to remotely control a two-way radio in covert operations. Notable public-safety features include a large push-to-talk and emergency buttons, and two programmable buttons.