Why does the speaker beep when the text message comes?

The "killer" of radio interference has been ignored by many people. Radio interference display is more harmful, and it will also interfere with some circuits on the motherboard. Because the traditional display works by electromagnetic field, when there is a strong radio signal from outside, the most common thing is to make a phone call or make a phone call near the display, and the electromagnetic field of the display will be seriously disturbed, resulting in severe image jitter. Too many frequencies will affect the normal working state of the electromagnetic field of the display and directly affect the display effect of the display.

Radio interference is inevitable, so you should try to stay away from computers and televisions.