Leading telecom operator Airtel has listed four plans that are the company's 'best-selling unlimited packs'. These plans seem to be the most popular plans across regions as we tried selecting various telecom circles to check if the plans changed with the circles, but there was no change in the plans. Airtel's best-selling unlimited packs start at Rs 199 and go up to Rs 509. Here is what each plan offers:

Airtel Rs 199 prepaid planAs part of this plan, Airtel offers 42GB 4G/3G data with FUP limit of 1.5GB per day. The calling benefits include unlimited local, STD and roaming calls. Users also get 100 SMS -- including both national and local -- per day. This plans comes with a validity of 28 days.

Airtel Rs 399 prepaid planAs part of this plan, Airtel offers 84GB 4G/3G data with a FUP limit of 1GB per day. The calling benefits include unlimited local, STD and roaming calls. Users also get 100 SMS -- including both national and local -- per day. This plans comes with a validity of 84 days.

Airtel Rs 448 prepaid planAs part of this plan, Airtel offers 123GB 4G/3G data with a FUP limit of 1.5GB per day. The calling benefits include unlimited local, STD and roaming calls. Users also get 100 SMS -- including both national and local -- per day. This plans comes with a validity of 82 days.

Airtel Rs 509 prepaid planAs part of this plan, Airtel offers 126GB 4G/3G data with a FUP limit of 1.4GB per day. The calling benefits include unlimited local, STD and roaming calls. Users also get 100 SMS -- including both national and local -- per day. This plans comes with a validity of 90 days.

Source: gadgetsnow.com