I feel bad for the person. He tried to cashed out but his device got got stuck and unable to relay the touch.  So far I don't have any bad experience like that.  I only played in personal computer for the reason that I have more trust on my computer unit than my mobile device in terms of reliability and security.  So far all my gambling session does not experience any ugly incident and the gaming experience is superb since I have a wider view of the game and at the same time have a very responsive UI.