Worst mobile operator.firstly, As per as airtel network is considered its worst in most parts of the india specially villages.secondly, as per as there customer services is considered its also worst.called severe times regarding network and data connectivity problem they always registered complaints and afterwards without correcting they send text messege that your complaint has been resolved.thirdly, as per as charges and billing is considered again I said its worst.tariff and plans are too high and costly.cant be affordable.