diff --git a/src/com/android/dialer/PhoneCallDetailsHelper.java b/src/com/android/dialer/PhoneCallDetailsHelper.java
index af0a525..2a4a142 100644
--- a/src/com/android/dialer/PhoneCallDetailsHelper.java
+++ b/src/com/android/dialer/PhoneCallDetailsHelper.java
@@ -63,8 +63,8 @@
             PhoneNumberUtilsWrapper phoneUtils) {
         mResources = resources;
         mCallTypeHelper = callTypeHelper;
-        mPhoneNumberHelper = new PhoneNumberDisplayHelper(resources);
         mPhoneNumberUtilsWrapper = phoneUtils;
+        mPhoneNumberHelper = new PhoneNumberDisplayHelper(mPhoneNumberUtilsWrapper, resources);
     }
 
     /** Fills the call details views with content. */
@@ -122,7 +122,7 @@
             nameText = displayNumber;
             if (TextUtils.isEmpty(details.geocode)
                     || mPhoneNumberUtilsWrapper.isVoicemailNumber(details.number)) {
-                numberText = mResources.getString(R.string.call_log_empty_gecode);
+                numberText = mResources.getString(R.string.call_log_empty_geocode);
             } else {
                 numberText = details.geocode;
             }
@@ -137,7 +137,6 @@
         }
 
         views.nameView.setText(nameText);
-
         views.labelView.setText(labelText);
         views.labelView.setVisibility(TextUtils.isEmpty(labelText) ? View.GONE : View.VISIBLE);
     }
diff --git a/src/com/android/dialer/calllog/PhoneNumberDisplayHelper.java b/src/com/android/dialer/calllog/PhoneNumberDisplayHelper.java
index 81f3ca1..5d7ce7e 100644
--- a/src/com/android/dialer/calllog/PhoneNumberDisplayHelper.java
+++ b/src/com/android/dialer/calllog/PhoneNumberDisplayHelper.java
@@ -18,8 +18,8 @@
 
 import android.content.res.Resources;
 import android.provider.CallLog.Calls;
-import android.telephony.PhoneNumberUtils;
 import android.text.TextUtils;
+import android.util.Log;
 
 import com.android.dialer.R;
 
@@ -27,10 +27,17 @@
  * Helper for formatting and managing the display of phone numbers.
  */
 public class PhoneNumberDisplayHelper {
+    private final PhoneNumberUtilsWrapper mPhoneNumberUtils;
     private final Resources mResources;
 
     public PhoneNumberDisplayHelper(Resources resources) {
         mResources = resources;
+        mPhoneNumberUtils = new PhoneNumberUtilsWrapper();
+    }
+
+    public PhoneNumberDisplayHelper(PhoneNumberUtilsWrapper phoneNumberUtils, Resources resources) {
+        mPhoneNumberUtils = phoneNumberUtils;
+        mResources = resources;
     }
 
     /* package */ CharSequence getDisplayName(CharSequence number, int presentation) {
@@ -43,7 +50,7 @@
         if (presentation == Calls.PRESENTATION_PAYPHONE) {
             return mResources.getString(R.string.payphone);
         }
-        if (new PhoneNumberUtilsWrapper().isVoicemailNumber(number)) {
+        if (mPhoneNumberUtils.isVoicemailNumber(number)) {
             return mResources.getString(R.string.voicemail);
         }
         if (PhoneNumberUtilsWrapper.isLegacyUnknownNumbers(number)) {
@@ -62,7 +69,6 @@
             int presentation, CharSequence formattedNumber) {
 
         final CharSequence displayName = getDisplayName(number, presentation);
-
         if (!TextUtils.isEmpty(displayName)) {
             return displayName;
         }
diff --git a/src/com/android/dialer/dialpad/DialpadFragment.java b/src/com/android/dialer/dialpad/DialpadFragment.java
index 00b8281..093cde2 100644
--- a/src/com/android/dialer/dialpad/DialpadFragment.java
+++ b/src/com/android/dialer/dialpad/DialpadFragment.java
@@ -1560,9 +1560,9 @@
      * or Wait character (;).
      */
     private void updateDialString(char newDigit) {
-        if(newDigit != WAIT && newDigit != PAUSE) {
-            Log.wtf(TAG, "Not expected for anything other than PAUSE & WAIT");
-            return;
+        if (newDigit != WAIT && newDigit != PAUSE) {
+            throw new IllegalArgumentException(
+                    "Not expected for anything other than PAUSE & WAIT");
         }
 
         int selectionStart;
@@ -1642,8 +1642,8 @@
     /* package */ static boolean canAddDigit(CharSequence digits, int start, int end,
                                              char newDigit) {
         if(newDigit != WAIT && newDigit != PAUSE) {
-            Log.wtf(TAG, "Should not be called for anything other than PAUSE & WAIT");
-            return false;
+            throw new IllegalArgumentException(
+                    "Should not be called for anything other than PAUSE & WAIT");
         }
 
         // False if no selection, or selection is reversed (end < start)