Voice over LTE (VoLTE) is a technology that allows voice calls to be made over a 4G LTE network instead of traditional circuit-switched networks. This means that users can enjoy higher quality audio during calls and faster call setup times. VoLTE also enables simultaneous voice and data usage, allowing users to browse the internet while on a call. With VoLTE, mobile operators can optimize their network resources, leading to improved efficiency. This technology is becoming increasingly common as more smartphones support it, enhancing the overall user experience and paving the way for future advancements in mobile communication.