Free voice calling and aggressively priced 4G mobile data by new entrant Reliance Jio - which offers telecom services under brand Jio - has led to revision of offers and new announcements by incumbent telecom operators, some analysts say.
Many telecom operators have revised their offerings for customers and announced new plans in the recent past.
Bharti Airtel provides many recharge options to its customers. Some of these recharge packs are priced at Rs 53, Rs 60, Rs 88, Rs 90, Rs 149, Rs 199 and Rs 399.

Here's what Airtel customers get under its recharge packs of Rs 199 and Rs 399:
Airtel Rs 199 recharge pack
"Unlimited Local and STD calls along with 1GB data for 28 days. Terms and conditions apply," Airtel describes the benefits under its Rs 199 pack on its website. Valid for 28 days, the Rs 199 pack by Airtel comes with 1 GB of data. That means a customer can use data up to 1 GB in 28 days from the date of recharge.
Airtel Rs 399 recharge pack
Describing the benefits offered under the Airtel recharge pack of Rs 399, the telecom company said on its website: "Unlimited Local+STD calls and 70GB data (1GB/day) 70 days.T&C apply.Offer on 4G H/S+4G SIM only." Customers recharging their Airtel prepaid mobile connection with the Rs 399 pack will get unlimited local as well as STD voice calls. Those having a 4G-enabled handset along with a 4G SIM will get 70 GB of data with a daily limit of 1 GB under this scheme. The Rs 399 pack, Airtel noted, comes with a validity of 70 days.