Apple platform (3)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">apple platform</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ios that I've seen before include "Greek island and mobile phone system" , "Greek island in the Cyclades" , "Apple's mobile system, in short" , "Greek isle" , "Another Greek island" .)