I am getting 45Mbps+ with 2.4GHz & about 120 - 130Mbps on 5GHz with my 100Mbps plan. Only make sure that your dual band wifi router has Gigabit WAN & LAN ports. There are many Dual Band wifi routers with only 100Mbps WAN & LAN speeds. The dual band wifi support of 443 or 800+ Mbps speeds is useless if your WAN port is only 100Mbps.
Yah sorry i meant ac not n, I got confused. So is there a benefit of buying AC router especially for decent speeds in 2.4 GHz?
On which router are you getting these speeds? The jio one or some other?