Some interesting tips and ideas, but what becomes very clear, is the irony that the ordinary citizen is going to be way more identifiable than most criminals will be. It costs money and/or effort to anonymise your mobile phone usage. And, certainly, if you want to actually connect to mobile networks at all, that blows much of the anonymity you may have been trying to achieve.
The article does give some insight though into what identifies you on the networks. If you don’t want to be tracked, the simple advice is, don’t carry a phone.
Interesting, too, to read that the mandatory registration on SIM cards has not shown any evidence of actually preventing or solving crime. In South Africa this year, we just heard that the whole system is a shambles, as many SIM numbers get recycled after not being used for a while, and someone else gets the number that was already linked to someone. I made the comment at the time, that this was just inconveniencing law-abiding citizens, whilst criminals were still easily procuring cheap SIM cards on the streets. It seems that most politicians/officials want to be “seen to be doing something” without any interest at all whether it is effective or convenient.
See https://nethemba.com/how-to-maximize-anonymity-when-accessing-the-internet-on-mobile/