diff --git a/src/com/android/contacts/util/PhoneCapabilityTester.java b/src/com/android/contacts/util/PhoneCapabilityTester.java
index 961e3c9..23319aa 100644
--- a/src/com/android/contacts/util/PhoneCapabilityTester.java
+++ b/src/com/android/contacts/util/PhoneCapabilityTester.java
@@ -58,7 +58,7 @@
     private static void initialize(Context context) {
         final TelephonyManager telephonyManager = new TelephonyManager(context);
         sIsPhone = telephonyManager.isVoiceCapable();
-        sIsSipPhone = SipManager.isVoipSupported(context);
+        sIsSipPhone = sIsPhone && SipManager.isVoipSupported(context);
         sIsInitialized = true;
     }