VoLTE (Voice over LTE) calls allow calls to be made over the LTE data network than was previously possible over the 2G or 3G network. VoLTE calls not only improve voice quality, but also reduce battery consumption and call setup time. On Samsung devices that support dual SIM, VoLTE calls can be switched on or off for both SIM cards independently.
- Open the Settings
- Tap on Connections
- Tap on Mobile networks
- Enable or disable VoLTE Calls