Good Morning, Julien Sir!
I have read your thread just now. I find many terms used by you go above my head. So, I would humbly request you to take the pain of explaining 'dumbphones' and 'JioPhones' at the first instance.
Then we will come to analyse threadbare the data furnished by you about use of phones by Indians (like authenticity of data, who undertook the study, data sampling technique, error percentage of the study, etc.).
Billo Rani kahon to abhi jaan de doon: Oh dear Billo, if you ask, I will give my life