Instructions apply to Samsung, Android, and iPhone 7 and later.
choose the easiest way depending on what’s available on your gadget.
Other titles indicating a vibration mode setting may includeTouch vibration,Sound Profile, or something similar.

How to Make a Samsung Phone Vibrate
Samsung smartphoneshave several effortless methods of enabling a vibration mode.
Here is the easiest way.
Among the shortcuts is aSoundicon, which is typically second after theWi-Fiicon.

If your smartphone sound is on, it’s blue and looks like it is emitting noise.
Tap theSoundicon until you see theVibrate modeicon.
The Samsung rig should also vibrate to indicate it’s in vibrate mode.
The soundbar says “Media"when you press the Volume Down key.
Press theVolume Downkey to display the soundbar.
Swipe down on the soundbar to display theAudio Shortcutsmenu.
ToggleUse Volume keys for mediatotheOffposition.
it’s possible for you to now use the volume keys to enter Vibrate mode.
Swipe down on the top of the home screen to bring up the Notificationpanel.
TapSettings>Sounds and vibration.
TapSound mode>Vibrate.
To set your rig to Vibrate mode, get into the back-end parameters.
Here’s how to enable Vibrate mode on an iPhone.
Go toSettings>Sounds & Haptics.
ToggleVibrate on Silentto theOnposition.
This ensures your iPhone is in Vibrate mode when you set it to silent using the Volume Down key.
Tap the feature for which you want to set a custom vibration.
Choose your preferred vibration pattern.
To create a new vibration, tapCustom Vibration, then tap a unique beat.
Many apps also include prefs for calming sounds for added comfort.
Many apps like these are in the Google Play Store and the Apple App Store.
FAQ
If it happens while the gear is charging, you could have a faulty cable.
In this case, the vibration occurs as the bad cord periodically loses and restores its connection.
Otherwise, you shouldcheck your settingsto ensure it’s only buzzing for notifications you really want to receive.
Depending on your phone, you canadjust the pattern or strength of vibrations, if not both.