Yes, Vivo V11 Pro has super AMOLED display. It has a PPI ratio of over 400.
Yes, Vivo V11 Pro does have the 3.5 mm headphone jack.
Vivo V11 Pro does support the fast charging. It takes just about 30 minutes to charge from 0% to 42% and about 60 minutes to charge the battery from 0% to 80%. You need to use the supplied original charger for the best results.
Vivo V11 Pro is just 7.9mm thick.
The Vivo V11 Pro is a solid all-rounder at Rs. 25,990 and offers better value than the Oppo F9 Pro (Review), but for a bit more money. Think of it as a Vivo X21 with a bigger battery and better front camera, but at a much more reasonable price, which is a good recipe.