diff -r b68fcd923911 -r b8d67d6176f5 phoneapp/phoneuistates/src/cphonesinglecall.cpp
--- a/phoneapp/phoneuistates/src/cphonesinglecall.cpp	Tue May 25 12:41:50 2010 +0300
+++ b/phoneapp/phoneuistates/src/cphonesinglecall.cpp	Wed Jun 09 09:41:11 2010 +0300
@@ -27,6 +27,7 @@
 #include <connect/sbdefs.h>
 #include <videotelcontrolmediatorapi.h>
 #include <MediatorDomainUIDs.h>
+#include <ScreensaverInternalPSKeys.h>
 
 #include "cphonesinglecall.h"
 #include "tphonecmdparamstring.h"
@@ -114,6 +115,10 @@
     iCallId = callStateData.CallId();
     iViewCommandHandle->ExecuteCommandL( EPhoneViewSetHoldFlag, &holdFlag );
 
+    CPhonePubSubProxy::Instance()->ChangePropertyValue(
+                    KPSUidScreenSaver,
+                    KScreenSaverAllowScreenSaver,
+                    EPhoneScreensaverAllowed );
     
     // Update phone number availability for menu use
     PhoneNumberAvailableInPhoneEngineL( callStateData.CallId() );
@@ -494,6 +499,11 @@
     __LOGMETHODSTARTEND( EPhoneUIStates, 
         "CPhoneSingleCall::HandleIncomingL()");
     
+    CPhonePubSubProxy::Instance()->ChangePropertyValue(
+                    KPSUidScreenSaver,
+                    KScreenSaverAllowScreenSaver,
+                    EPhoneScreensaverNotAllowed );
+    
     BeginUiUpdateLC();
     
     // Hide the number entry if it exists
@@ -608,6 +618,11 @@
     __LOGMETHODSTARTEND( EPhoneUIStates, 
         "CPhoneSingleCall::HandleDiallingL()");
     
+    CPhonePubSubProxy::Instance()->ChangePropertyValue(
+                    KPSUidScreenSaver,
+                    KScreenSaverAllowScreenSaver,
+                    EPhoneScreensaverNotAllowed );
+    
     BeginUiUpdateLC();
     
     SetNumberEntryVisibilityL(EFalse);