Yes, Oppo F11 comes with a hybrid sim slot but it also has 128GB internal storage and OTG support.
No. Oppo F11 does not have the front camera LED flash but it has display screen flash.
Yes, Oppo F11 has Corning Gorilla Glass 5 display protection.
No. Oppo F11 does not have the IR blaster sensor support.
Yes, Oppo F11 has dual 4G sim support. You can use 2 sim cards on 4G networks at the same time without any trouble.