Airtel had a busy weekend. While the telecom operator was seen to have revised its Rs. 399 prepaid recharge to increase its validity from 70 days to 84 days, it was also spotted to have upgraded its Rs. 149 prepaid pack. While formerly the pack offered unlimited calls on the Airtel to Airtel network, it now offers unlimited local, STD, and roaming calls on any network. The Airtel Rs. 149 pack's validity remains the same, as do other benefits.Notably, the Airtel Rs. 149 prepaid pack is limited to only a few regions in India - specifically, the Andhra Pradesh and Telangana circles. The new plan was spotted by Telecom Talk, which noted it is a segmented offer and not available to all users in all of Airtel's circles. The report also notes that with the revision, the Airtel Rs. 149 has become the cheapest pack from Airtel to offer unlimited call benefits for 28 days. Other benefits of the revised Rs. 149 prepaid pack from Airtel include 1GB data 3G/ 4G data (formerly, it offered 1GB 4G data only) per 28-day validity period, and access to 100 SMSes a day.