"Effective 3-Dec 2014, bill plan rental for your airtel mobile will be revised from Rs 199 per month to Rs 224 per month," Airtel said in a message to its customers.
Industry sources said Airtel has increased rates across low rental plans.
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Queries sent to Airtel did not elicit any immediate reply.
Airtel has a mobile subscriber base of over 20 crore customers, which include both pre-paid and post-paid users. Last week, Bharti Airtel had reported nearly three-fold jump in consolidated net profit at Rs 1,383 crore for the September quarter on growth in mobile data revenues.
This is the second hike in rates of telecom services by the company within a period of three months. In September, the company had increased mobile internet rates by up to 33% and reduced benefit under plans for its pre-paid customers.
An increase in telecom services rates has become more frequent since the last two years after a number of players in the market came down following cancellation of mobile licences by the Supreme Court in 2G spectrum case.