Xiaomi talked about the function of the Redmi 8 and Redmi 8A smartphones, which users had no idea about.
The manufacturer calls this function sound removal of dust. With it, the smartphone will independently clean the speakers from accumulated dust and dirt.
The mechanism is simple: a special sound is turned on, which makes the speaker move with maximum amplitude for 30 seconds. As a result, he "shakes out" the garbage.
Xiaomi says that the speakers themselves will not suffer after such manipulations.
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