Ask for a short message that can make someone else's mobile phone black and shake wildly.

I've played this. Let me tell you the principle first.

Most shanzhai operating systems use MTK platform. This MTK platform, because of its low price, allows many domestic MP3 music player manufacturers to produce mobile phones overnight.

The format of this short message is: (blank line) Note (blank line) Your mobile phone will be blank for one hour (blank line). Can you believe ... (empty line to the end). In these blank lines, there is a musical cue. It was this music tip that made the phone black. This music prompt is a component that can detect whether it is pirated or genuine-just like the Microsoft XP operating system on the computer, if it is not genuine software, the screen will be black.

In MTK's solution, the mobile phone has a vibration interface of sound files, that is, the vibration command is put into the ringtone, and when the ringtone is used, the mobile phone will automatically vibrate!

According to the vibration principle, in MTK solution, besides the vibration interface, there may be a command interface with a black screen (of course, this is probably just a loophole). Adding this command to the sound file can make the phone black.

There is also a kind that can make the other party's mobile phone vibrate, and it can't be turned off, only the battery can be deducted, but the two situations I mentioned are only applicable to domestic mobile phones, and they don't work for foreign brand machines. The phone vibrates, others send it, but mine doesn't respond. Add my QQ and I'll send it to you.