Joke Collection Website - Public benefit messages - Why does the mobile phone ring a short piece of music for a while?

Why does the mobile phone ring a short piece of music for a while?

There may be reminders of missed calls, missed messages and low battery power. These are all easy to solve!

Maybe it's the special design of some mobile phones! You have to take a closer look at the settings of your mobile phone.

With such a mobile phone, I am really curious, you add me QQ; I can learn more.

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