Bharti Airtel on Friday announced a 10-21 per cent hike in prepaid and postpaid mobile tariffs, a day after larger rival Reliance Jio announced an increase in rates.

The move assumes significance, as it marks the first major increase in tariffs by the telecom industry, in two-and-a-half years. Airtel’s tariff hike across various plans ranges from 10-21 per cent, and will be effective from July 3.