Earlier quoted context omitted.
> police everywhere can now just record the phone numbers I remember that the dutch police some years ago already used so called "sms-bombs" to contact mobile phone subscribers that were around a crime scene months before. It is simply inherent in the technology. You wear a mobile phone? (not even smart ) So you are traceable with all consequences. The solution? In any case not technical in nature. We will see.
Get a burner phone, even from a different country. I have a Russian and French sim cards and keep your phone off unless you really need to make a call.
Just switching SIM cards may change what account info you're using, while still providing plenty of information for determined investigators to use.