Bought a phone Galaxy A71 , @30K. and its keyboard doesn't have vibration feature. Every S series and Note series phone has that feature but Samsung disables this features in other series phone intentionally Haptic feedback on keypress is very basic ...
volte servcie must be active for using data while on call. may be volte servcie not available in your region. so u can not use data while on calllinng even on 4G.