>>1458716These old Samsung phones were usually connected to the PC using the software Samsung PC Studio 8(
https://samsung-pc-studio.en.softonic.com ). I rememeber using it with my old Sansung E380.
Be aware that getting it to behave and actually connect could be a pain in the neck, and it probably won't work on modern systems, so you will need an old PC with Win XP or so.
But it's probably your best bet, it IS the official tool Samsung provided to connect the old flip phones to a PC you are looking for.