Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5354)
+++ /CKEditor/trunk/CHANGES.html	(revision 5355)
@@ -129,4 +129,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/5149">#5149</a> : [FF] Cursor dissapears after maximize when editor has focus.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/5220">#5220</a> : DTD now shows tolerance to &lt;style&gt; appear inside content.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/5540">#5540</a> : Mobile browsers (iPhone, Android...) are marked as incompatible as they don't support the editable features.</li>
 		<li>Updated the following language files:<ul>
 			<li>Faroese;</li>
Index: /CKEditor/trunk/_source/core/env.js
===================================================================
--- /CKEditor/trunk/_source/core/env.js	(revision 5354)
+++ /CKEditor/trunk/_source/core/env.js	(revision 5355)
@@ -71,4 +71,6 @@
 
 			quirks : ( document.compatMode == 'BackCompat' ),
+
+			mobile : ( agent.indexOf( 'mobile' ) > -1 ),
 
 			isCustomDomain : function()
@@ -177,4 +179,5 @@
 		 */
 		env.isCompatible =
+			!env.mobile && (
 			( env.ie && version >= 6 ) ||
 			( env.gecko && version >= 10801 ) ||
@@ -182,5 +185,5 @@
 			( env.air && version >= 1 ) ||
 			( env.webkit && version >= 522 ) ||
-			false;
+			false );
 
 		// The CSS class to be appended on the main UI containers, making it