BSNL Wings required subscribers to download a separate app and make a one-time payment to activate the Wi-Fi Calling service.
All three companies had recently tweaked their tariff plans for users and the newly revised plans for customers are here.
Airtel says that as many as 102 Android phones and iPhone models now have support for Wi-Fi Calling.
Jio subscribers can make voice or video calls through any Wi-Fi network.
If you want 1GB data per day on Airtel, you must pay for the Rs 219 recharge pack while on Vodafone Idea, you need to opt for the Rs 219 recharge option.
Airtel is competing with Reliance Jio and Vodafone Idea in the prepaid mobile tariffs space.
Cable TV and DTH companies can now offer discounts on long term subscriptions, and channel prices are expected to go down too.
After rising 164 points in early trade on Wednesday, the 30-share BSE index was quoting 131.47 points or 0.32 per cent higher at 41,385.21. NSE Nifty rose 46.75 points or 0.38 per cent to 12,215.20.
The minimum recharge cost for Airtel prepaid users has been increased by Rs 10.
The Irdai action will benefit all lenders of Reliance Capital as sale proceeds of RGICL's shares will go to all lenders and not just Credit Suisse and Nippon India MF.
Axis Bank was the top gainer in the Sensex pack, climbing 3.33 per cent, followed by PowerGrid, SBI, Bharti Airtel, ICICI Bank, Reliance Industries and Maruti.
Apart from Live TV, the Airtel Xstream box can also run apps such as Netflix, Amazon Video, Hotstar, Zee5 and Jio Cinema.
Reliance Retail's shareholders will get one share of its listed parent, Reliance Industries, in exchange for every four shares, according to the scheme of arrangement posted on Reliance Retail's website.
Bharti Airtel was the top loser in the Sensex pack, dropping 2.23 per cent, followed by Reliance Industries, L&T, Sun Pharma, HDFC Bank, Maruti, Titan and Kotak Bank.
If you do recharge with the Rs 2020 plan for your Reliance Jio prepaid mobile number, the monthly expenditure comes to just Rs 168 per month.
The Reliance Jio Happy New Year offer also gives existing smartphone users unlimited calling along with 1.5GB data per day for one year, at the same price.
The idea is to improve the call quality when you are indoors where mobile network coverage may be spotty, and also reduce the load on the network.
Reliance Industries Limited, HDFC Bank, HDFC, ICICI Bank, Kotak Mahindra Bank, Infosys and SBI were the other companies in the top 10 list which saw gains in their market capitalisation (m-cap) for the week ended Friday.
Reliance Jio, Airtel and Vodafone Idea all have the annual recharge options for prepaid users.
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