Yes, Nokia 8 is a true 4G network and it shall work with Airtel VoLTE.
No. Nokia 8 does not have wireless charging. However, we are expecting that soon you will be able to buy some third party accessories to charge your Nokia 8 wirelessly.
Yes, you can use 2 4G Sim cards in this phone.
No. Nokia 8 does not support CDMA netwok in India.
It’s safe to say that if a smartphone like this had shipped from the Nokia stable a few years ago, the Finnish company might never have had to step back from the mobile business.