Call forwarding on the Xiaomi smartphone is set by default according to the network settings. Usually, calls are forwarded to the mailbox if "busy", "unanswered" or "unreachable".
Call forwarding can either be enabled or disabled for each case, or to any phone number.
- Open the Phone app
- Open the Settings
- Tap on Call forwarding settings
- Choose a SIM card (Dual SIM)
- Choose Always forward, When busy, When unanswered or When unreachable
- Enable or disable Call forwarding