diff -r 2666d9724c76 -r d4f567ce2e7c phonebookui/Phonebook2/UIPolicy/src/CPbk2ContactViewSortPolicy.cpp
--- a/phonebookui/Phonebook2/UIPolicy/src/CPbk2ContactViewSortPolicy.cpp	Thu Jul 15 18:22:55 2010 +0300
+++ b/phonebookui/Phonebook2/UIPolicy/src/CPbk2ContactViewSortPolicy.cpp	Thu Aug 19 09:41:07 2010 +0300
@@ -43,6 +43,12 @@
 // Debugging headers
 #include <Pbk2Profile.h>
 
+#include <vpbkeng.rsg>
+
+// Greater than any practical top contact number string
+// which is in form like '0000000001'.
+_LIT(KBigNumStr, "9999999999");
+
 
 /// Unnamed namespace for local definitions
 namespace {
@@ -172,6 +178,8 @@
         iSortOrder = CVPbkSortOrder::NewL(aParam->iSortOrder);
         iFieldMapper.SetSortOrder(*iSortOrder);
 
+        iTopContactId = GetTopContactFieldIndex();
+
         RPbk2LocalizedResourceFile resFile(aParam->iFs);
         resFile.OpenLC( KPbk2RomFileDrive, KDC_RESOURCE_FILES_DIR,
             KResourceFile );
@@ -205,6 +213,8 @@
     delete iSortOrder;
     iSortOrder = sortOrder;
     iFieldMapper.SetSortOrder( *iSortOrder );
+
+    iTopContactId = GetTopContactFieldIndex();
     }
 
 // --------------------------------------------------------------------------
@@ -275,34 +285,14 @@
         const TInt lhsCount = iFieldMapper.FieldCount();
         for ( i = 0; i < lhsCount; ++i )
             {
-            const MVPbkBaseContactField* lhsField =
-                iFieldMapper.FieldAt( i );
-            if ( lhsField )
-                {
-                iLeftSortKeyArray->SetText( MVPbkContactFieldTextData::Cast
-                    ( lhsField->FieldData() ).Text(), i );
-                }
-            else
-                {
-                iLeftSortKeyArray->SetText( KNullDesC, i );
-                }
+            SetSortKey( iLeftSortKeyArray, iFieldMapper.FieldAt(i), i );
             }
 
         iFieldMapper.SetContactFields( aRhs.Fields() );
         const TInt rhsCount = iFieldMapper.FieldCount();
         for ( i = 0; i < rhsCount; ++i )
             {
-            const MVPbkBaseContactField* rhsField =
-                iFieldMapper.FieldAt( i );
-            if ( rhsField )
-                {
-                iRightSortKeyArray->SetText( MVPbkContactFieldTextData::Cast
-                    ( rhsField->FieldData() ).Text(), i );
-                }
-            else
-                {
-                iRightSortKeyArray->SetText( KNullDesC, i );
-                }
+            SetSortKey( iRightSortKeyArray, iFieldMapper.FieldAt(i), i );
             }
 
 PBK2_PROFILE_END( Pbk2Profile::ESortPolicyCompareContacts );
@@ -392,4 +382,60 @@
     return result;
     }
 
+// --------------------------------------------------------------------------
+// CPbk2ContactViewSortPolicy::GetTopContactFieldIndex
+// --------------------------------------------------------------------------
+//
+TInt CPbk2ContactViewSortPolicy::GetTopContactFieldIndex()
+    {
+    TInt index = KErrNotFound;
+    for ( TInt i=0; i<iSortOrder->FieldTypeCount(); i++ )
+        {
+        // Resource id of top contact field is R_VPBK_FIELD_TYPE_TOPCONTACT.
+        if ( iSortOrder->FieldTypeAt( i ).FieldTypeResId() == 
+                R_VPBK_FIELD_TYPE_TOPCONTACT )
+            {
+            index = i;
+            break;
+            }
+        }
+    return index;
+    }
+
+// --------------------------------------------------------------------------
+// CPbk2ContactViewSortPolicy::SetSortKey
+// --------------------------------------------------------------------------
+//
+void CPbk2ContactViewSortPolicy::SetSortKey(
+        CPbk2SortKeyArray* aSortKeyArray,
+        const MVPbkBaseContactField* aField,
+        TInt aIndex )
+    {
+    TInt textLen = 0;
+    if ( aField )
+        {
+        TPtrC text = MVPbkContactFieldTextData::Cast
+            ( aField->FieldData() ).Text();
+        aSortKeyArray->SetText( text, aIndex );
+        textLen = text.Length();
+        }
+    if ( textLen == 0 )
+        {
+        if ( aIndex == iTopContactId )
+            {
+            // For some variants such as Chinese variant, 
+            // empty string is less than not empty string. 
+            // This will make topic contacts which have substantial top contact
+            // id strings after those with empty id strings.
+            // To prevent this, use a big number string instead of empty string 
+            // and make sure top contacts in front of other contacts.
+            aSortKeyArray->SetText( KBigNumStr, aIndex );
+            }
+        else
+            {
+            aSortKeyArray->SetText( KNullDesC, aIndex );
+            }
+        }
+    }
+
 //  End of File