Airtel is latest to increase mobile rates by up to 33%, while Vodafone and Idea have started gradually implementing the increased mobile internet rates from June. The three companies jointly hold around 57% mobile services market share.
While no comments were received from Airtel and Idea Cellular, Vodafone India spokesperson said "Around 2 months ago, we changed the base tariff of 2G for 1GB pack from Rs 155 to Rs 175. This has been carried out in a phased manner across circles."
Airtel and Idea too have increased the rate of 1GB 2G mobile internet pack to around Rs 175 from about Rs 155 GB.
Telecom operators generally don't make public announcement about increase in mobile tariff. The change is noticed on their website after the new rates are implemented.
They generally inform their postpaid customer through SMS about change in rates of services before their next billing cycle starts.