How to set the default SIM card for calls on the Redmi 13C 5G?

When you use the Redmi 13C 5G, setting a default SIM card for calls simplifies the dialing process by eliminating the need to choose a SIM each time.
To set the default SIM card for calls on the phone, please refer to the following steps:
1. Open the [Settings] APP on your device. You can find the gear icon on your home screen or in your APP drawer;
2. Navigate to the [Mobile networks] option and tap it;
3. Select [Calls] to choose your default SIM card. Once selected, your phone will use the chosen SIM card by default for all outgoing calls.

Note:
Please select the SIM card that has better coverage in your location, as poor signal strength can affect call quality.