EVS (Enhanced Voice Services) is the 2014 voice codec for 4G and 5G mobile, the modern successor to AMR. It spans narrowband all the way to fullband speech and is music-capable, delivering markedly more natural voice than AMR-WB while using bits more efficiently. Crucially for mobile, it has strong packet-loss resilience — including a channel-aware mode and good concealment — so calls hold together on lossy radio. EVS is the default high-quality codec behind VoLTE and VoNR 'HD Voice' and 'HD Voice+' branding, and it interoperates with AMR-WB for backward compatibility. For an engineer it represents the current state of the art in standardized, carrier-grade conversational audio.
