Yes, that is correct. The Poco F3 has dual-sim, but not the option to insert an SD card.

I did NOT order the thing, but it was delivered. Returned it unopened and got another voucher for the mobile phone I did NOT order. Have criticised this and am now being urged by Anonymous to give a review. I think I am so competent after this experience that I would insist on NOT ordering a mobile phone from Digitec under any circumstances.