diff --git a/java/com/android/dialer/app/calllog/VisualVoicemailUpdateTask.java b/java/com/android/dialer/app/calllog/VisualVoicemailUpdateTask.java
index 2544483..e30623b 100644
--- a/java/com/android/dialer/app/calllog/VisualVoicemailUpdateTask.java
+++ b/java/com/android/dialer/app/calllog/VisualVoicemailUpdateTask.java
@@ -121,7 +121,8 @@
       if (notification.getId() != VisualVoicemailNotifier.NOTIFICATION_ID) {
         continue;
       }
-      if (!notification.getTag().startsWith(VisualVoicemailNotifier.NOTIFICATION_TAG_PREFIX)) {
+      if (TextUtils.isEmpty(notification.getTag())
+          || !notification.getTag().startsWith(VisualVoicemailNotifier.NOTIFICATION_TAG_PREFIX)) {
         continue;
       }
       String uri =
diff --git a/java/com/android/dialer/app/list/ListsFragment.java b/java/com/android/dialer/app/list/ListsFragment.java
index 362997a..05c647a 100644
--- a/java/com/android/dialer/app/list/ListsFragment.java
+++ b/java/com/android/dialer/app/list/ListsFragment.java
@@ -203,7 +203,11 @@
             mPrefs.getBoolean(
                 VisualVoicemailEnabledChecker.PREF_KEY_HAS_ACTIVE_VOICEMAIL_PROVIDER, false));
     mViewPager.setAdapter(mAdapter);
-    mViewPager.setOffscreenPageLimit(DialtactsPagerAdapter.TAB_COUNT_WITH_VOICEMAIL - 1);
+
+    // This is deliberate. See cl/172018946 for the app startup implications of using 1 here
+    // versus loading more fragments upfront.
+    mViewPager.setOffscreenPageLimit(1);
+
     mViewPager.addOnPageChangeListener(this);
     showTab(DialtactsPagerAdapter.TAB_INDEX_SPEED_DIAL);
 
diff --git a/java/com/android/incallui/videotech/lightbringer/LightbringerTech.java b/java/com/android/incallui/videotech/lightbringer/LightbringerTech.java
index 784daa8..eb2e92e 100644
--- a/java/com/android/incallui/videotech/lightbringer/LightbringerTech.java
+++ b/java/com/android/incallui/videotech/lightbringer/LightbringerTech.java
@@ -17,7 +17,6 @@
 package com.android.incallui.videotech.lightbringer;
 
 import android.content.Context;
-import android.os.Build;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.telecom.Call;
@@ -57,11 +56,6 @@
 
   @Override
   public boolean isAvailable(Context context) {
-    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
-      LogUtil.v("LightbringerTech.isAvailable", "upgrade unavailable, only supported on N+");
-      return false;
-    }
-
     if (!ConfigProviderBindings.get(context)
         .getBoolean("enable_lightbringer_video_upgrade", true)) {
       LogUtil.v("LightbringerTech.isAvailable", "upgrade disabled by flag");