I think its service, is far better from other telecom operators. I use Airtel network since 15 years and I never found any types of problems regarding its networking coverages or customer service whenever I travels to any cities, villages or any state I feel relax with this network due to its network service .
I used airtel 3g net and it gives very high speed internet connection it’s net pack is quite be higher in price but it gives you the best service