That’s apply on most of cases(specially in asian countries like in India as well).
But ISP gives you only two or three total different IP classes, then whenever you do airplane mode on/off or change APN or change 4G to 3G then it will give you same class IP like first time 22.214.171.124 and then second time 126.96.36.199. I collect my changed IP numbers and I see only few times I got totally different IP with all different IP classes numbers.
Some ISP provide both IPv6 and IPv4, but I disable IPV6 from network settings. It’s not safe when majority of social site user have IPv4 in my area.
Vodafone India doesn’t change the IP by simply doing airplane mode on/off, but by changing 4G to 3G or vice versa gives you new IP address, if it doesn’t, then change APN setting as well.
Jio/Airtel/Idea India gives you different IP by simply doing airplane mode on/off.