You cannot receive calls or use the mobile network with the SIM card.
1. Go to
Settings > 
SIM cards & mobile networks.
2. Tap a phone number to set SIM card.
3. Tap
to stop Turn on.
1. Go to
Settings > SIM cards & mobile networks.2. Tap a phone number to set SIM card.
3. Tap
to stop Turn on.Note
Only when the phone is inserted with two SIM cards, you can disable one SIM card.