Xiaomi Mi9 today released the MIUI 10 internal beta system update, added a WiFi probe protection function, can provide protection against the probe box that intercepts user information. 
The update version number is 9.4.17 and the size is 219MB. In addition to the WiFi probe protection, it also brings the ordinary calculator small window function, schedule notification and later reminder.
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The WiFi probe was exposed at the CCTV 315 party. By using the WiFi probe, the gray-black industry can obtain the WLAN MAC address of the mobile phone, obtain the IMEI number of the mobile phone, and then obtain the mobile phone number of the user, thus providing a source for the harassing call.
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