diff --git a/src/org/thoughtcrime/securesms/jobs/MmsSendJob.java b/src/org/thoughtcrime/securesms/jobs/MmsSendJob.java
index bca2c3928b..6eda18200a 100644
--- a/src/org/thoughtcrime/securesms/jobs/MmsSendJob.java
+++ b/src/org/thoughtcrime/securesms/jobs/MmsSendJob.java
@@ -24,6 +24,7 @@ import org.thoughtcrime.securesms.transport.InsecureFallbackApprovalException;
 import org.thoughtcrime.securesms.transport.UndeliverableMessageException;
 import org.thoughtcrime.securesms.util.Hex;
 import org.thoughtcrime.securesms.util.NumberUtil;
+import org.thoughtcrime.securesms.util.TelephonyUtil;
 import org.whispersystems.jobqueue.JobParameters;
 import org.whispersystems.jobqueue.requirements.NetworkRequirement;
 import org.whispersystems.libaxolotl.NoSessionException;
@@ -146,7 +147,7 @@ public class MmsSendJob extends SendJob {
                                 boolean usingMmsRadio, boolean useProxy)
       throws IOException, UndeliverableMessageException, InsecureFallbackApprovalException
   {
-    String  number         = ((TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE)).getLine1Number();
+    String  number         = TelephonyUtil.getManager(context).getLine1Number();
     boolean upgradedSecure = false;
 
     prepareMessageMedia(masterSecret, message, MediaConstraints.MMS_CONSTRAINTS, true);
diff --git a/src/org/thoughtcrime/securesms/mms/IncomingMmsConnection.java b/src/org/thoughtcrime/securesms/mms/IncomingMmsConnection.java
index d29a9c8f69..a3c24a4b0c 100644
--- a/src/org/thoughtcrime/securesms/mms/IncomingMmsConnection.java
+++ b/src/org/thoughtcrime/securesms/mms/IncomingMmsConnection.java
@@ -20,6 +20,7 @@ import android.content.Context;
 import android.net.Uri;
 import android.util.Log;
 
+import org.apache.http.Header;
 import org.apache.http.HttpHost;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGetHC4;
@@ -41,7 +42,9 @@ public class IncomingMmsConnection extends MmsConnection {
   @Override
   protected HttpUriRequest constructRequest(boolean useProxy) throws IOException {
     HttpGetHC4 request = new HttpGetHC4(apn.getMmsc());
-    request.addHeader("Accept", "*/*, application/vnd.wap.mms-message, application/vnd.wap.sic");
+    for (Header header : getBaseHeaders()) {
+      request.addHeader(header);
+    }
     if (useProxy) {
       HttpHost proxy = new HttpHost(apn.getProxy(), apn.getPort());
       request.setConfig(RequestConfig.custom().setProxy(proxy).build());
diff --git a/src/org/thoughtcrime/securesms/mms/MmsConnection.java b/src/org/thoughtcrime/securesms/mms/MmsConnection.java
index de91f9234d..fc26ad99bb 100644
--- a/src/org/thoughtcrime/securesms/mms/MmsConnection.java
+++ b/src/org/thoughtcrime/securesms/mms/MmsConnection.java
@@ -21,6 +21,7 @@ import android.net.ConnectivityManager;
 import android.text.TextUtils;
 import android.util.Log;
 
+import org.apache.http.Header;
 import org.apache.http.auth.AuthScope;
 import org.apache.http.auth.UsernamePasswordCredentials;
 import org.apache.http.client.CredentialsProvider;
@@ -33,6 +34,7 @@ import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
 import org.apache.http.impl.client.LaxRedirectStrategy;
 import org.apache.http.impl.conn.BasicHttpClientConnectionManager;
+import org.apache.http.message.BasicHeader;
 import org.thoughtcrime.securesms.database.ApnDatabase;
 import org.thoughtcrime.securesms.util.TelephonyUtil;
 import org.thoughtcrime.securesms.util.Conversions;
@@ -45,6 +47,8 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.InetAddress;
 import java.net.URL;
+import java.util.LinkedList;
+import java.util.List;
 
 public abstract class MmsConnection {
   private static final String TAG = "MmsCommunication";
@@ -168,6 +172,22 @@ public abstract class MmsConnection {
 
   protected abstract HttpUriRequest constructRequest(boolean useProxy) throws IOException;
 
+  protected List<Header> getBaseHeaders() {
+    final String number = TelephonyUtil.getManager(context).getLine1Number();
+    return new LinkedList<Header>() {{
+      add(new BasicHeader("Accept", "*/*, application/vnd.wap.mms-message, application/vnd.wap.sic"));
+      add(new BasicHeader("x-wap-profile", "http://www.google.com/oha/rdf/ua-profile-kila.xml"));
+      add(new BasicHeader("Content-Type", "application/vnd.wap.mms-message"));
+      add(new BasicHeader("x-carrier-magic", "http://magic.google.com"));
+      if (!TextUtils.isEmpty(number)) {
+        add(new BasicHeader("x-up-calling-line-id", number));
+        add(new BasicHeader("X-MDN", number));
+      }
+    }};
+
+
+  }
+
   public static class Apn {
 
     public static Apn EMPTY = new Apn("", "", "", "", "");
diff --git a/src/org/thoughtcrime/securesms/mms/OutgoingMmsConnection.java b/src/org/thoughtcrime/securesms/mms/OutgoingMmsConnection.java
index 66a892089d..35b461f96a 100644
--- a/src/org/thoughtcrime/securesms/mms/OutgoingMmsConnection.java
+++ b/src/org/thoughtcrime/securesms/mms/OutgoingMmsConnection.java
@@ -20,13 +20,18 @@ import android.content.Context;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.net.Uri;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
 import android.util.Log;
 
+import org.apache.http.Header;
 import org.apache.http.HttpHost;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpPostHC4;
 import org.apache.http.client.methods.HttpUriRequest;
 import org.apache.http.entity.ByteArrayEntityHC4;
+import org.thoughtcrime.securesms.util.TelephonyUtil;
+import org.thoughtcrime.securesms.util.Util;
 
 import java.io.IOException;
 
@@ -49,9 +54,10 @@ public class OutgoingMmsConnection extends MmsConnection {
   {
     try {
       HttpPostHC4 request = new HttpPostHC4(apn.getMmsc());
-      request.addHeader("Accept", "*/*, application/vnd.wap.mms-message, application/vnd.wap.sic");
-      request.addHeader("x-wap-profile", "http://www.google.com/oha/rdf/ua-profile-kila.xml");
-      request.addHeader("Content-Type", "application/vnd.wap.mms-message");
+      for (Header header : getBaseHeaders()) {
+        request.addHeader(header);
+      }
+
       request.setEntity(new ByteArrayEntityHC4(mms));
       if (useProxy) {
         HttpHost proxy = new HttpHost(apn.getProxy(), apn.getPort());
diff --git a/src/org/thoughtcrime/securesms/util/TelephonyUtil.java b/src/org/thoughtcrime/securesms/util/TelephonyUtil.java
index 9e3ee1db91..dedb56091a 100644
--- a/src/org/thoughtcrime/securesms/util/TelephonyUtil.java
+++ b/src/org/thoughtcrime/securesms/util/TelephonyUtil.java
@@ -9,6 +9,10 @@ import android.util.Log;
 public class TelephonyUtil {
   private static final String TAG = TelephonyUtil.class.getSimpleName();
 
+  public static TelephonyManager getManager(final Context context) {
+    return (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
+  }
+
   public static String getMccMnc(final Context context) {
     final TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
     final int configMcc = context.getResources().getConfiguration().mcc;