Recently, some netizens discovered that well-known input method apps such as Xunfei, QQ, and Sogou disappeared from major app stores, including Android and iOS platforms. In response, HKUST Xunfei responded that the Xunfei Input Method APP was removed from the App Store because it did not meet the rectification requirements of the State Cyberspace Administration of China regarding the notification of violations of personal information collection on May 1. It is reported that the Office of the Cyberspace Administration of China did issue a relevant report on May 1. The three input methods of Xunfei, QQ, and Sogou that have been removed recently were all due to "violating the principle of necessity and collecting personal information unrelated to the services they provide. And other reasons are among them. At that time, the rectification period given in the notification was 10 working days, which has long since been exceeded. HKUST Xunfei stated that as of June 11, Xunfei's input method APP has completed rectification and is cooperating with relevant departments to check to ensure compliance and re-launch. QQ input method and Sogou input method have not yet responded to this matter.