Airtel is one of the best mobile phone network provider service than the different other services.
The hand-off provided into different base station with least cell dragging makes it even more better.!
There are sim cards which eventually ends up not getting any signal on a secluded or remote area.But this problem will not be experienced by you on an airtel sim card.!
They only drawback which they have is the customer care service provider that causes a leak in the wall of the airtel as a firm.!
with an improvement it would end up as the best service provider