Airtel has slashed call rates in Karnataka for its lifetime validity customers. Super Lifetime Validity Customers were earlier paying Rs 999, with local calls at Rs 1.99 per minute. But in the new tariff plan of Rs 499, one can make local calls at Re 1 per minute. For new customers, the telephone company has come up with two packages of Rs 1,944 and Rs 1,644, offering Nokia handsets of Rs 1649 and Rs 1349 respectively. The call rate for this package is Re 1 per minute.