diff --git a/location/java/com/android/internal/location/GpsNetInitiatedHandler.java b/location/java/com/android/internal/location/GpsNetInitiatedHandler.java
index 139474c1c01d4..67a040dba3e7f 100644
--- a/location/java/com/android/internal/location/GpsNetInitiatedHandler.java
+++ b/location/java/com/android/internal/location/GpsNetInitiatedHandler.java
@@ -28,6 +28,7 @@ import android.location.LocationManager;
 import android.os.RemoteException;
 import android.os.SystemClock;
 import android.os.UserHandle;
+import android.telephony.PhoneNumberUtils;
 import android.telephony.PhoneStateListener;
 import android.telephony.TelephonyManager;
 import android.util.Log;
@@ -160,7 +161,7 @@ public class GpsNetInitiatedHandler {
                        be set to true when the phone is having emergency call, and then will
                        be set to false by mPhoneStateListener when the emergency call ends.
                 */
-                mIsInEmergencyCall = mTelephonyManager.isEmergencyNumber(phoneNumber);
+                mIsInEmergencyCall = PhoneNumberUtils.isEmergencyNumber(phoneNumber);
                 if (DEBUG) Log.v(TAG, "ACTION_NEW_OUTGOING_CALL - " + getInEmergency());
             } else if (action.equals(LocationManager.MODE_CHANGED_ACTION)) {
                 updateLocationMode();
diff --git a/telecomm/java/android/telecom/CallerInfo.java b/telecomm/java/android/telecom/CallerInfo.java
index 2983e6339d4bb..a63ee4664378c 100644
--- a/telecomm/java/android/telecom/CallerInfo.java
+++ b/telecomm/java/android/telecom/CallerInfo.java
@@ -406,8 +406,7 @@ public class CallerInfo {
         // Change the callerInfo number ONLY if it is an emergency number
         // or if it is the voicemail number.  If it is either, take a
         // shortcut and skip the query.
-        TelephonyManager tm = context.getSystemService(TelephonyManager.class);
-        if (tm.isEmergencyNumber(number)) {
+        if (PhoneNumberUtils.isLocalEmergencyNumber(context, number)) {
             return new CallerInfo().markAsEmergency(context);
         } else if (PhoneNumberUtils.isVoiceMailNumber(null, subId, number)) {
             return new CallerInfo().markAsVoiceMail(context, subId);
diff --git a/telecomm/java/android/telecom/CallerInfoAsyncQuery.java b/telecomm/java/android/telecom/CallerInfoAsyncQuery.java
index a9e1a8fc1952e..bf49f3c7b9bfc 100644
--- a/telecomm/java/android/telecom/CallerInfoAsyncQuery.java
+++ b/telecomm/java/android/telecom/CallerInfoAsyncQuery.java
@@ -483,7 +483,16 @@ public class CallerInfoAsyncQuery {
 
         // check to see if these are recognized numbers, and use shortcuts if we can.
         TelephonyManager tm = context.getSystemService(TelephonyManager.class);
-        if (tm.isEmergencyNumber(number)) {
+        boolean isEmergencyNumber = false;
+        try {
+            isEmergencyNumber = tm.isEmergencyNumber(number);
+        } catch (IllegalStateException ise) {
+            // Ignore the exception that Telephony is not up. Use PhoneNumberUtils API now.
+            // Ideally the PhoneNumberUtils API needs to be removed once the
+            // telphony service not up issue can be fixed (b/187412989)
+            isEmergencyNumber = PhoneNumberUtils.isLocalEmergencyNumber(context, number);
+        }
+        if (isEmergencyNumber) {
             cw.event = EVENT_EMERGENCY_NUMBER;
         } else if (PhoneNumberUtils.isVoiceMailNumber(context, subId, number)) {
             cw.event = EVENT_VOICEMAIL_NUMBER;