Try it in the simple old way:
First put your sim in the old phone.
Open contacts, and in settings or somewhere, there will be an option to copy contacts to Sim card.
Put your sim back to L620.
Open contacts, and in settings or somewhere, there will be an option to copy contacts from Sim to phone memory.
Done.
First put your sim in the old phone.
Open contacts, and in settings or somewhere, there will be an option to copy contacts to Sim card.
Put your sim back to L620.
Open contacts, and in settings or somewhere, there will be an option to copy contacts from Sim to phone memory.
Done.