It is currently not technically possible to make a call and use mobile data in the same network mode at the same time. 3G is used for mobile data if a call is made under 4G (LTE).
LG devices with Dual-SIM, on the other hand, have the function of using mobile data via the other, non-standard SIM card during a call, making it possible to make a call via LTE (VoLTE) and use LTE for mobile data at the same time. After the call, the mobile data is switched back to the standard SIM card.
- Open the Settings
- Tap on Dual SIM Card
- Enable or Disable Mobile data during calls