Brian Higgins testified in front of the federal grand jury, and again at the Karen Read trial, that he destroyed his SIM card and threw it in a military base dumpster because a subject of one of his investigations found out his phone number. We tested his claim.
https://tbdailynews.com/canton-coverup-part-395-testing-out-brian-higgins-story-about-getting-rid-of-sim-card-at-otis-air-force-base/