No. Oppo F11 does not have the front camera LED flash but it has display screen flash.
Yes, Oppo F11 does have the support for the face unlock. It also has a fingerprint scanner.
Yes, Oppo F11 does have support for the fast charging. The mobile comes with VOOC 3.0 enabled the fast charger. It charges almost 20% faster than the regular fast chargers available in other mobile phones.
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 NFC sensor.