讀後心得

The harassment calls in life are bothersome. A female netizen shared her experience on a social media platform about receiving calls that disconnect right after picking up, sparking intense discussion. These types of calls are actually from "number screening machines" that verify whether a number is valid, with the goal of building a database of phone numbers, which are then resold to other businesses, resulting in ongoing marketing harassment. To avoid becoming a target, netizens suggest downloading the Whoscall application, which can filter incoming calls and display the caller's identity, enhancing users' decision-making when answering.

Common nuisance calls in life can be quite bothersome. A female internet user shared on social media about receiving calls that hang up immediately after answering, sparking intense discussions. However, these calls are not the typical scams or pranks people might think of, but rather a so-called "number screening" mechanism. The purpose is to confirm whether the phone number is in use, thereby creating a valid phone database for specific businesses to use.

What does a call that hangs up immediately mean?

A female internet user posted on a Facebook group stating that she received a call that hung up as soon as she answered. Out of curiosity, she searched for the phone number online and found many others had encountered the same situation. Some even tried to call back only to find the number was unreachable, which led her to wonder, "Don't phone calls cost money? Is there too much money involved or is there some other reason?"

"Number screening" to confirm if a number is in use

This post attracted explanations from knowledgeable users who clarified that such calls are actually the operation of "number screening" machines. The system automatically dials to test whether the phone line is in use. Once answered, the number is registered as valid and will subsequently be sold to other clients, resulting in continuous nuisance calls regarding loan promotions and other solicitations, which can be quite annoying.

Countermeasure for immediate hang-up calls

To avoid becoming a target of nuisance calls, users suggested downloading a specific application that can actively filter and display incoming call information. This app records suspicious calls that ring once and then hang up. It is available for both iOS and Android systems. After installation, if someone calls, the screen will directly show the caller's identity, allowing the user to decide whether to answer.

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