Upvoted and followed but I need some info on India from an actual Indian.

These are my Questions:

1. Are there poorer areas in India that would not have access to bank accounts, smaller towns , etc.. Not talking about the general population but specific places or cities.

2. In these smaller cities do people use smartphone, mobile phones, neither or both, once again not major cities.

3. Can you think of any small city in India that by and large is self sustaining in terms of food and agriculture. Maybe there is a coastal town that manages to catch lots of fish and this is the main source of food for the local inhabitants.

Ty any insight is appreciated.