PC Suite was from Sony for Nokia brand mobile phones, but this software is no longer supported. However, you can import the contacts via Bluetooth from an Android smartphone and via a contacts.vcf file from a backup from another mobile phone, it should also work to copy them into the memory of the Nokia from the PC via usb, for example, or copy Bluetooth from a mobile phone and then open it, but I haven't tested it because importing from the smartphone worked great right away