my phone S7 seems to be stuck with voice assistant on. I can't get it to do anything. Pattern to unlock is difficult- phone vibrates while trying to draw pattern, on 3rd or 4th try will unlock if pattern is drawn slowly and with heavy finger pressure. screen is not responsive- slow and requiring long hold and double tap to make selections. Icons are big, cant get to settings as they are on another page and screen won't scroll.phone gets very hot.