Recently, there are always mobile phones from Nanning, Guangxi and Dongguan, Guangdong calling me, and they always ring twice and hang up on time. The caller is not a number either.

In this case, most people will reply to a short message and ask who the other party is (because long-distance calls are too expensive), which is exactly what scammers do, and there are even more short messages in 5 yuan. Call back is also charged by time, 1 minute 5 yuan or something.

So when a stranger calls or sends a message, don't reply, just pretend he doesn't exist. If you are harassed too much, you can consider calling the police.