My mobile phone keeps vibrating, and there is no prompt.

There may be some software startup reminders.

1. The mobile phone suddenly vibrates, but there is no information. It may be that the message notification bar of the mobile phone has been closed, and the push message will not be displayed when it comes back, but there will be a prompt tone. You can turn on the message notification bar, or turn off all push messages, so there will be no prompt sound.

2. The vibration of mobile phone is not caused by SMS. Setting vibration in settings, including software message reminder, system message reminder and many other aspects, will have vibration and breathing light reminder.

In fact, the reason why the mobile phone can vibrate is because there is a component called vibration motor inside the mobile phone, which is also called eccentric motor vibration. What is a "mobile phone motor"? To put it simply: "The mobile phone motor is generally used in the small vibration motor above the mobile phone, and its main function is to make the mobile phone produce vibration effect." Seeing this, someone should have the concept of motor in their mind. Simply put, it is to make the mobile phone vibrate, and the common one is the ringing of the bell.