Screen incoming calls from unknown numbers immediately to avoid surprises. This single report suggests a nuisance call that triggered spam detection, as the phone didn't ring and no voicemail followed. Such tactics are common for unwanted solicitors or automated systems trying to bypass filters. Block the number right away if it reappears, and report it to your carrier or apps like Google Voice for better protection. Enable call screening features to filter out low-trust sources proactively—staying vigilant prevents escalation to more intrusive harassment.
Missed the call, no voicemail left; the phone never rang, likely flagged as spam by Google.