I have haptic feedback on and power saving mode off and my phone still doesn't vibrate when it rings or I type or anything pls help I highly appreciate it
not sure if heptic feedback can be adjusted with vibration intensity option. but see if it's not all the way down.
settings -> my device (tab) -> sound -> vibration intensity (just checked, there is an option for heptic feedback)
I had a problem with my texts not vibrating, and as I held down the power button to turn it off and back on, I saw some options. "Mute, Vibrate," and something else. Turns out my son must have done it. Maybe this happened with yours? Hope it helps.