Seems like a good move to me. Most, if not all smartphone users have 4G smartphones. And, the 2G network is still up for feature phone users. If this cuts costs and brings them from red to green, they should eventually do this all over the country.
as someone mentioned to me just now... this would be a problem for devices without volte... like pixels. they would be stuck with calls on 2g network. so it would largely suck. plus your internet would not work while you are on call.
I am also wondering, since I am using a non-VoLTE 4G smartphone, earlier when receiving or making a voice call while on 4G network, it used to switch to 3G network by default and would fall back to 4G network after the call. Now will it switch to 2G and then fall back to 4G after call.
@ijsa Um, no I'm from Kolkata. Yeah, if Airtel shuts down 3G in Delhi, your phone will fall back to 2G for making calls. Unfortunately, call quality will degrade because Airtel won't be allocating much spectrum to 2G either. Also, with 1800Mhz, voice coverage will be slightly poorer compared to LTE.