If your Samsung Galaxy phone has started giving off faint, seemingly random vibrations after updating to One UI 7, don’t panic — your phone isn’t broken, and you’re not imagining things. In fact, there’s a surprisingly simple explanation behind it, and it has everything to do with light.
Not a bug, just a “bright” idea from someone at Samsung
Here’s what’s really happening: Samsung has tied a subtle vibration effect to sliders, such as volume and brightness controls, in One UI 7. When you manually drag either of these sliders to 100%, your phone gives a gentle tap to let you know you’ve hit the max setting — a nice bit of tactile feedback. The surprise twist? This haptic feedback also kicks in when the phone automatically adjusts brightness.
That’s right — if auto-brightness is enabled and your phone boosts the screen to 100% brightness in response to bright light or sunlight, it will vibrate just like it would if you dragged the brightness slider yourself. So, if you’re holding your phone while walking outside or sitting near a sunny window and feel a tiny, unexplained tap in your palm, it’s just One UI 7 letting you know your display brightness has maxed out.
At first, it can feel like a ghost vibration or even a minor muscle twitch — but it’s neither. It’s a feature, not a bug. Well, we believe Samsung intended this effect to happen during auto-brightness adjustments. If not, it’s definitely a bug, but not one that would get you concerned. Either way, it’s a quirk worth being aware of.
Can you stop these seemingly random vibrations in One UI 7?
Yes, you can. But this means disabling vibrations for all touch interactions. Samsung has tied these “slider full” vibration alerts for sound and brightness sliders to touch interactions. If you disable those, you won’t get haptic feedback when the brightness is maxed out, either manually or automatically in a bright environment.
To disable vibrations for touch interactions, go to Settings > Sounds and vibration > System vibration. Now, toggle off vibration feedback for touch interactions. Note that this would turn off vibrations for all touches, including navigation buttons and gestures. You can also manage vibration intensity from the same settings page.
