Yes, Samsung Galaxy Note 8 does have the VoLTE support.
There is no official announcement from Samsung India yet about the availability of the Deep Sea Blue color.
Yes, Samsung Galaxy Note 8 does have the hybrid sim slot - so, you can use MicroSD card to expand the memory of the phone.
Unlike other brands, Samsung Galaxy Note 8 does have fast charging even when you use the wireless charger. It takes about 30 minutes to charge the battery from 0% to 49%.
Yes, Samsung Galaxy Note 8 does have the support for the 4K resolution videos. You can record and view 4K videos without any glitch.
The Samsung Galaxy Note 8 is the best big phone you can buy. For once, it’s more than just the size of the screen and the power of the S Pen that count.