To insert two SIM cards into your Samsung Galaxy A56 5G, follow these steps:

1. open the SIM card tray: Locate the SIM card tray at the bottom of the device. Use the SIM card ejector pin, which is usually included in the scope of delivery, or the edge of a paper clip to open the tray.

2. insert the SIM cards: Insert the first SIM card into the front slot of the tray with the gold contacts facing up and the cut corner of the card aligned with the corresponding mark in the tray. Repeat this step for the second SIM card on the other side of the tray.

3. close the SIM card compartment: Once both cards are inserted, carefully push the compartment back into the device.

You can also use a combination of a physical SIM card and an eSIM, but not three SIM cards at the same time.