No. Oppo A71s does not have the hybrid sim card slot. Oppo A71s houses 2 dedicated MicroSD card slots and a dedicated MicroSD card slot.
No. Oppo A71s does not have the gorilla glass protection. But you can apply tempered glass for the added display protection.
Oppo A71s has 5.2 Inch HD IPS with 1280 x 720 resolution. The display offers 282 PPI ratio. The display has 2.5D curved glass but unfortunately, it does not have any kind of display protection.
No. Oppo A71s does not have the NFC support.