How does a smartphone recognize spam phone calls?

The article discusses the phenomenon that has become increasingly popular in recent years – how mobile phones can identify spam calls. Modern smartphones come equipped with advanced algorithms that analyze call data, helping users pinpoint potentially unwanted calls. The author explains how phones gather information about numbers, utilizing databases of previously reported spammers and machine learning algorithms to assess the risk associated with a given number. It's important to note that although these technologies are helpful, they are not foolproof and may sometimes misjudge legit calls. The article wraps up with suggestions for users on how they can personally minimize unwanted calls, including reporting abuses and using filtering applications to enhance their call screening process.