My screen is jumping and my keyboard disappears while typing

While typing my keyboard disappears and then comes back, sometimes it won't come back without me touching my message, it also jumps while scrolling thru newsfeeds it does it all the time

While typing my keyboard disappears and then comes back, sometimes it won't come back without me touching my message, it also jumps while scrolling thru newsfeeds it does it all the time. This is an android s7

Whatever else you do about it, make sure you back up your personal data while you still can.