Frequent silent rings suggest a robocall or automated system testing numbers. Callers often hang up after a couple of rings to avoid detection, which can be a tactic for illegal number harvesting. If you keep receiving these drops, consider letting the call go to voicemail and then block the number, or register with the national do‑not‑call list. Using a call‑blocking app can also filter out repeated short‑duration calls. Stay cautious about answering unknown calls, especially if the line goes dead quickly; it’s usually safer to ignore or block them.
Calls keep coming, but when I answer there’s nobody, or it rings twice then disconnects.
