So something that, we missed during our iPhone in India coverage all along was the official unlocking offered by Airtel. While we are yet to confirm this with Airtel, the Apple site lists Airtel India as one of those carriers which supports authorized unlocking (of course with an additional fee).It’s very surprising that in so many interactions over the past 1 year with Airtel locally I didn’t notice this. Either Airtel guys have been instructed to keep this option locked to themselves, or there is a mistake on the Apple site. Either ways, we will dig out the details soon!
Via Apple (Thx Mohitji)