How much would you bet against there being someone in jail right now convicted on nothing more than having bought a sim/phone with a recycled number that'd previously been used by someone dealing/buying drugs?
I don't get the relationship between numbers in my phone and the probability I stood in line at a starbucks whith someone else who was infected.
Now that we are though, if I were a contact tracer, I’d totally ask to see your text messages - there’s a reasonable chance that while not everybody you texted is someone you came into contact with, there’s also probably a fairly high correlation the other way - if you had met up with someone you quite likely messaged or called them to arrange if. If it was my job to help you remember all the people you’d spent time with in the last 2-3 weeks, I’d definitely like to go through your messages and call logs to remind you about anyone you might’ve forgotten.