(cbs 21 news)
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If you receive a phone call from someone you don't know asking "can you hear me," it would be in your best interest to probably hang up.
A new scam could make you a potential victim if you answer yes because that response is recorded by fraudsters and is used to make unauthorized charges on a phone or utility bill.
According to CBS News you get charged because the person already knows your phone number and phone providers pass through the third-party charges.