Telecom Regulatory Authority of India, TRAI has sought additional information from leading service providers, including Bharti airtel and Vodafone, on their recent decision to hike mobile tariffs by up to 20 per cent. Telecom service providers like Bharti airtel, Idea Cellular, Vodafone and Reliance Communications recently raised tariffs for their services in most operating circles. 

TRAI had sent letters to all the companies that recently hiked tariffs, seeking their justification for the tariff hike. Most of the companies cited inflationary pressure in the country as being responsible for the tariff hike. On other hand, industry experts are of the view that the hike in mobile tariffs is anti-consumer and it will only result in an abnormal increase in companies' profits.