I received a text message that blacked out my phone screen. Can anyone explain what is going on? What causes the phone screen to go black for a few minutes?

Microsoft's anti-piracy verification has caused many domestic pirate users to encounter "black screens" on their computer desktops. Recently, some users of copycat mobile phones have also experienced "black screens". However, this is not a large-scale counterfeit phone verification operation, nor will it affect the future use of counterfeit phones. It is just a small prank among friends.

On the 5th, a Mr. Li who used a copycat mobile phone told reporters about the "black screen" experience on his mobile phone: "A friend sent a text message. After opening it, the text message displayed was: Warning, scroll down again. The screen was black for an hour, don’t believe it, scroll down again... At that time, I didn’t believe that text messages could really black out the phone screen, but later on, when I scrolled down, it turned out to be a black screen.”

To confirm what Mr. Li said. In the "black screen" incident, the reporter forwarded the "black screen" text message to Mr. Li again. After opening the text message, Mr. Li's copycat phone had a black screen. After the phone screen goes black, no matter what keys Mr. Li presses, the phone screen always remains bright for less than a second and then quickly goes black. It lasted for nearly a minute before Mr. Li's phone returned to its original state.

The reporter found through Internet searches that many netizens posted about their copycat phones encountering black screens after opening text messages, but some brand phones did not. An industry insider who specializes in mobile phones told reporters that such "black screen" text messages usually have a small icon in the content. As long as you turn to the icon, the phone will have a black screen.

Then why do “black screens” appear only on copycat mobile phones? According to industry insiders, this should be related to the operating system of the mobile phone. Most “copycat” mobile phones use the MTK operating system. This type of “black screen” The text message may exploit a vulnerability in the MTK operating system to modify the screen backlight display time. This type of "black screen" text message is only effective for copycat mobile phones using the MTK operating system. If any user encounters this kind of "black screen" trap, they can wait for the phone's "black screen" to end naturally. If it does not end for a long time, remove the battery and force it to shut down and restart.