iPhone 6s Plus vibration issue

[alexrat1996]

Facing another issue why is the vibrate low on the 6s plus compared to old iPhone 6 128 GB sometimes I don't feel it and app switch when I activate to the left the vibration is low but I can feel it is that expected

 

[vegamiguel]

Having the same problem also. I download Cydia and install an app called Activator the problem solved. It's weird that the problem comes again after I uninstall the app.