https://techcrunch.com/2019/12/02/voice-calls-and-mobile-data-get-up-to-40-costlier-in-india/

India has long been a wonderland for cellphone users. At a time when most telecom operators across the globe charge anywhere between $5 to $10 for a gigabyte of mobile data, telcos in India deliver that for just a few cents.

Spare another $2 to the same telecom operator, and you get a gigabyte of mobile data everyday for a month and all your nationwide calls become free.