Yes it is true , very few people may about privacy and they wikl use VPN softwares on mobiles. Rest don't bother. Even if you run http site for user name password it is ok here except for financial transaction. But i am sure irrespective of the vendors all providers can do what they want the license of ISP they have but they need to keep meta data and they provide it to government as and when requested by Dept of Telecom , no warrant or court order required as it is covered in ISP license and CAF agreement with customer. This applies to all internet connection not just retail customers. I know airtel injects a page when i run out of the bandwidth even though my dns is google DNS.I would rather fight for food safety, health safety and garbage collection in cities(None of the major cities know how to do it and IT Hub is full of garbage everywhere) etc... than worry about any of these

Data privacy shouldn't be a privilege for the wealthy. All internet users deserve the same rights in this regard.

People living close to poverty aren't going to be buying LTE phones or modems anytime soon.