called VoLTE (voice-over-LTE). Even so, a particular phone can choose to use a 4G modem, yet still use 3G-style phone connections. Until the 3G network is shutdown, that is. This is the crux of ...

Without VoLTE, calling often means your phone switches from the 4G network to 3G or 2G. With VoLTE, the phone remains on the 4G network during calls, resulting in uninterrupted data services while ...

Reliance Jio has started testing interoperability between 5G VoNR and 4G VoLTE. 5G VoNR offers improved audio quality and lower latency during calls. This will also remove the need for an LTE ...