Bharti Airtel announced that it will begin selling Apple Watch Series 3 (GPS + Cellular), which adds built-in cellular to the world's number one watch, with pre-registrations starting 04 May 2018 and availability on
11 May 2018.
Customers can pre-register on Airtel website. With cellular, customers can go with just their Apple Watch and stay connected to the people and information they care about. To help Apple Watch Series 3 (GPS + Cellular) customers get started, Airtel will also offer a special introductory cellular trial. To activate cellular service with Apple Watch Series 3 (GPS
+ Cellular), customers first need to update iPhone to iOS 11.3 and watchOS 4.3, then tap Settings on iPhone > General> About and follow the prompt to update to the latest carrier settings.