To hide the keyboard on mobile devices you can add the code below before the Sooqr snippet.
As it works with focus this will also deselect the input on the desktop.

Don't forget the replace <search field id> with the search field id.

jQuery('#<search field id>').bind('keypress', function(e) {var code = e.keyCode || e.which;if(code == 13) {jQuery('#<search field id>').blur();}});