Redmi 6 comes with 5W charger.
If you use the supplied 5W charger, it charges to 18 percent in 30 minutes and 35 percent in an hour.
You can record up to 1080p resolution videos with Redmi 6.
Yes, Redmi 6 does have the dual apps support. You can have 2 WhatsApp and 2 Facebook accounts at the same time.
If your budget absolutely can’t exceed the Rs. 8,000 mark, go with the Redmi 6 without any concerns whatsoever.