I've begun noticing odd behavior w/ my S21 Ultra when I set it down on a flat surface.
Intermittently, I will hear what I initially thought was static/buzzing from a speaker. It's actually the phone buzzing/vibrating. This is not related to a notification, as I can reproduce it by setting the phone down a few times.
It appears to be the haptic motor running at a low frequency for no reason at all, and it will stop if I pick it up. You can feel the vibration coming from the top center of the device, and it creates an audible hum from whatever surface the phone rests on.
Anyone else seen similar?
I wouldn't think it's a software issue, but I may consider a factory reset. I'm running the U1 firmware on the U variant, but that doesn't seem like a logical cause.
Intermittently, I will hear what I initially thought was static/buzzing from a speaker. It's actually the phone buzzing/vibrating. This is not related to a notification, as I can reproduce it by setting the phone down a few times.
It appears to be the haptic motor running at a low frequency for no reason at all, and it will stop if I pick it up. You can feel the vibration coming from the top center of the device, and it creates an audible hum from whatever surface the phone rests on.
Anyone else seen similar?
I wouldn't think it's a software issue, but I may consider a factory reset. I'm running the U1 firmware on the U variant, but that doesn't seem like a logical cause.