How does Nokia 5320 copy SMS to SIM card?

This 5320 is not supported. Only the information saved on the SIM card can be viewed, and it cannot be moved to the SIM card. If you want to view information on another smart phone, you can enter the information settings and change the usage and storage of the memory card. When you receive the message, the phone will automatically save the message in the memory card. When changing a mobile phone, just unplug the memory card, put it on another mobile phone, enter the information settings, change the storage in the same way, and you can see the saved short messages.