diff --git a/src/com/android/settings/network/telephony/EnabledNetworkModePreferenceController.java b/src/com/android/settings/network/telephony/EnabledNetworkModePreferenceController.java
index 9c5a98e..c5e2215a 100644
--- a/src/com/android/settings/network/telephony/EnabledNetworkModePreferenceController.java
+++ b/src/com/android/settings/network/telephony/EnabledNetworkModePreferenceController.java
@@ -175,18 +175,21 @@
                         R.array.enabled_networks_tdscdma_choices);
                 preference.setEntryValues(
                         R.array.enabled_networks_tdscdma_values);
-            } else if (!carrierConfig.getBoolean(CarrierConfigManager.KEY_PREFER_2G_BOOL)
+            } else if (carrierConfig != null
+                    && !carrierConfig.getBoolean(CarrierConfigManager.KEY_PREFER_2G_BOOL)
                     && !carrierConfig.getBoolean(CarrierConfigManager.KEY_LTE_ENABLED_BOOL)) {
                 preference.setEntries(R.array.enabled_networks_except_gsm_lte_choices);
                 preference.setEntryValues(R.array.enabled_networks_except_gsm_lte_values);
-            } else if (!carrierConfig.getBoolean(CarrierConfigManager.KEY_PREFER_2G_BOOL)) {
+            } else if (carrierConfig != null
+                    && !carrierConfig.getBoolean(CarrierConfigManager.KEY_PREFER_2G_BOOL)) {
                 int select = mShow4GForLTE
                         ? R.array.enabled_networks_except_gsm_4g_choices
                         : R.array.enabled_networks_except_gsm_choices;
                 preference.setEntries(select);
                 preference.setEntryValues(
                         R.array.enabled_networks_except_gsm_values);
-            } else if (!carrierConfig.getBoolean(CarrierConfigManager.KEY_LTE_ENABLED_BOOL)) {
+            } else if (carrierConfig != null
+                    && !carrierConfig.getBoolean(CarrierConfigManager.KEY_LTE_ENABLED_BOOL)) {
                 preference.setEntries(
                         R.array.enabled_networks_except_lte_choices);
                 preference.setEntryValues(
diff --git a/src/com/android/settings/network/telephony/MobileNetworkUtils.java b/src/com/android/settings/network/telephony/MobileNetworkUtils.java
index 8e44dd4..42c1b93 100644
--- a/src/com/android/settings/network/telephony/MobileNetworkUtils.java
+++ b/src/com/android/settings/network/telephony/MobileNetworkUtils.java
@@ -347,6 +347,7 @@
         final PersistableBundle carrierConfig = context.getSystemService(
                 CarrierConfigManager.class).getConfigForSubId(subId);
         if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID
+                || carrierConfig == null
                 || !carrierConfig.getBoolean(
                 CarrierConfigManager.KEY_OPERATOR_SELECTION_EXPAND_BOOL)
                 || (carrierConfig.getBoolean(CarrierConfigManager.KEY_CSP_ENABLED_BOOL)
diff --git a/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceController.java b/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceController.java
index fdc9f7f..f883d8a 100644
--- a/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceController.java
+++ b/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceController.java
@@ -112,8 +112,10 @@
         mTelephonyManager = TelephonyManager.from(mContext).createForSubscriptionId(mSubId);
         final PersistableBundle carrierConfig = mContext.getSystemService(
                 CarrierConfigManager.class).getConfigForSubId(mSubId);
-        mOnlyAutoSelectInHome = carrierConfig.getBoolean(
-                CarrierConfigManager.KEY_ONLY_AUTO_SELECT_IN_HOME_NETWORK_BOOL);
+        mOnlyAutoSelectInHome = carrierConfig != null
+                ? carrierConfig.getBoolean(
+                CarrierConfigManager.KEY_ONLY_AUTO_SELECT_IN_HOME_NETWORK_BOOL)
+                : false;
 
         return this;
     }
diff --git a/tests/robotests/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceControllerTest.java
index 6639aae..e9cd731 100644
--- a/tests/robotests/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/network/telephony/gsm/AutoSelectPreferenceControllerTest.java
@@ -111,4 +111,12 @@
                 mContext.getString(R.string.manual_mode_disallowed_summary,
                         mTelephonyManager.getSimOperatorName()));
     }
+
+    @Test
+    public void init_carrierConfigNull_shouldNotCrash() {
+        when(mCarrierConfigManager.getConfigForSubId(SUB_ID)).thenReturn(null);
+
+        // Should not crash
+        mController.init(SUB_ID);
+    }
 }