Airtel another segmented offer for those who use mobile rarely.
Best Offer ₹.199
Free unlimited local calls to any mobile number
1GB 4G data
This one is from unused sim just lying in 2G only second sim slot of 4G phone for months now.
Airtel systems know that this is a 4G dual sim handset so other sim must be from rivals more probably Jio.
So a more lucrative offer is shown to this no never seen or heard from anyone.
This & many better offer appears as I started keeping this sim on. So all those who want better offer just keep the sim card on always in second slot & try not to use it.