If your Samsung S25 Ultra is vibrating even when in silent mode, it likely means you have specific app notifications set to vibrate even when the phone is on silent, or you might need to check your vibration settings within the "Sounds and Vibration" menu to ensure all vibration options are turned off for silent mode.
How to fix:
Check app notifications:
Go to Settings > Notifications.
Select the app that might be causing the vibration.
Ensure the "Allow notifications" option is toggled on, and check if "Vibrate" is turned off.
Adjust system vibration settings:
Go to Settings > Sounds and vibration.
Check if "Vibrate on silent" is turned off.
You can also adjust vibration intensity for different notification types like calls, messages, and system sounds.