Yes. Currently, Jio and Airtel networks are supported on Apple Watch series 3 GPS + Cellular model. Your number will remain the same.
Yes, Apple watch series 3 works well with Apple iPhone 6. Check this video explaining how to pair your Apple watch with iPhone 6.
Apple Watch Series 3 allows you to make and receive calls on your watch. Not only that you can live stream the music also. Watch this video to know more.
Even in its current form, it’s miles ahead of its closest competitor when it comes to functionality and parsecs ahead with the design. There’s a reason Apple hasn’t visually changed its watch in three generations: It’s nearly perfect.
The Apple Watch Series 3 is the best overall smartwatch you can buy, but battery limitations and add-on fees keep it from being a must-have upgrade.