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it home reported on september 1 that china mobile launched a high-frequency harassment call protection function nationwide in 2019. after 5 years of operation, the number of users served by this function has exceeded 300 million.

china mobile's high-frequency nuisance call protection service is a free service provided by china mobile. it uses cloud-based interception technology to provide users with a do-not-disturb service.

it is reported that china mobile's high-frequency nuisance call protection service is a free service that uses cloud-based blocking technology to provide users with nuisance call blocking services. there is no need to install an app to prevent nuisance. china mobile users can activate it for free by sending ktfsr to 10086 via sms.

this service uses a database of harassing phone numbers that is dynamically generated based on communication big data, tags and yellow pages information, as well as callback verification results. it judges and intercepts various high-frequency harassing calls in real time in the cloud, and notifies users of the interception results via mms or wechat.

users can also make customized settings on the "china mobile high-frequency nuisance call protection" official account, including blacklists, whitelists, harassment blocking settings, custom number segments, etc.

it home found out that the total number of china mobile's mobile business customers in july 2024 was approximately 1.00815 billion, which means that nearly 1/3 of china mobile's mobile phone users have activated this function.