To be fair, O2 has a massive issue with scammers and they need to do something about it. I switched to O2 about a year ago, keeping my old number. I’d rarely get scam calls or texts before I switched but since I’ve been with o2, I get 5-10 calls a week. Particularly annoying because I have to answer my phone due to my job

91% on Chrome mobile behind PiHole. Fairly good for a minimum effort whole network solution.