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Why does my phone vibrate when it turns on after it was off?

So after I restart my phone, it vibrates when turns on, or when I turn it off (completely) and then on .

I don't know why it happens but I can give you more details if you ask me to.

It might be because of a specific application and because no one asked that so it might be because of oculus vr.

Why is it a problem?

Well after it happens my phone becomes slow for a short amount of time and then coming back to normal.

Please help!

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Most Androids I have used will vibrate when powered on. This serves two functions:

  1. Tests the vibration motor
  2. Notifies the user that the phone turned on, in case it was an accident you wanted it off to save power.

First, remove any recently installed apps. If that doesn’t help, I recommend trying a wipe of the cache partition. This will clear out a bunch of temporary data and, although it will cause a slower boot-up the first time after being performed, will usually result in a much more responsive phone later.

Here are the steps:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  3. When the logo screen displays, release only the Power key.
  4. When the Android logo displays, release the Volume Up and the Home key ('Installing system update' will show for about 30 - 60 seconds before showing the Android system recovery menu options).
  5. Press the Volume down key several times key to highlight 'wipe cache partition.'
  6. Press the Power key to select.
  7. Press the Volume down key several times key to highlight 'yes.'
  8. Press the Power key to select.
  9. When the wipe cache partition is complete, 'Reboot system now' is highlighted.
  10. Press the Power key to restart the device.

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Try opening your device in safe mode. If it’s fine and everything, it’s likely an app like you said. If it persists, then you know it’s a different issue.

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You know that this post was a year ago.

I now own a Galaxy S9+ which doesn't do it.

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Why does my phone vibrate when I turn it on?

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As another person said, the most Android phones does this and it isn’t a problem. It is probably the software that causes this to happen, and it is completely normal. But if this is something new, do some research in system updates and if this feature has been added in a new version of your phone’s OS.

Otherwise you shall check for programs that might be doing this and uninstall them if you aren’t comfortable with the phone vibrating when you are turning it on and off.

However, I don’t think that this is too big of a deal since all Android phones that I’ve had has been doing this every time they have gone through startup and shutdown.

It is probably not something dangerous like a virus. Example: A system update could have caused this too.

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