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T.S.C.M LTD research. 25 October 2026. The complaint In counter-surveillance work, one of the most common things a worried client says is: "Calls on my phone won't end. I press the button and nothing happens." It is easy to dismiss as a software glitch. It is just as easy to over-read it as proof of eavesdropping. We wanted to know whether the complaint can be measured at all, and what the measurement can and cannot tell an examiner. What we measured A phone's standard diagno