We make things simple
You hang up on a fake "TRAI officer" and feel pleased you did not fall for it. But tomorrow, the same number will call someone else. Someone who might. There is a government service where you can report it in โฆ
The caller says he is from your mobile network. There is a problem with your SIM, or your network is about to be upgraded. To fix it, you just need to dial a short code and a number. It feels โฆ
"They can't read my messages, so I'm fine." Here is the problem with that. They do not need to. What is metadata in plain English? Metadata is the record of who you contacted, when, and for how long. Not one โฆ