diff --git a/src/com/android/messaging/receiver/SendStatusReceiver.java b/src/com/android/messaging/receiver/SendStatusReceiver.java
index c1b2bca..8d2e10f 100644
--- a/src/com/android/messaging/receiver/SendStatusReceiver.java
+++ b/src/com/android/messaging/receiver/SendStatusReceiver.java
@@ -87,7 +87,7 @@
                 final String format = intent.getStringExtra("format");
                 status = smsMessage.getStatus();
                 // Simple matching up CDMA status with GSM status.
-                if (SmsMessage.FORMAT_3GPP2.equals(format)) {
+                if ("3gpp2".equals(format)) {
                     final int errorClass = (status >> 24) & 0x03;
                     final int statusCode = (status >> 16) & 0x3f;
                     switch (errorClass) {
diff --git a/src/com/android/messaging/sms/MmsUtils.java b/src/com/android/messaging/sms/MmsUtils.java
index e8e8713..75a01dd 100644
--- a/src/com/android/messaging/sms/MmsUtils.java
+++ b/src/com/android/messaging/sms/MmsUtils.java
@@ -1156,7 +1156,9 @@
     public static SmsMessage getSmsMessageFromDeliveryReport(final Intent intent) {
         final byte[] pdu = intent.getByteArrayExtra("pdu");
         final String format = intent.getStringExtra("format");
-        return SmsMessage.createFromPdu(pdu, format);
+        return OsUtil.isAtLeastM()
+                ? SmsMessage.createFromPdu(pdu, format)
+                : SmsMessage.createFromPdu(pdu);
     }
 
     /**
diff --git a/src/com/android/messaging/util/DebugUtils.java b/src/com/android/messaging/util/DebugUtils.java
index 0d689fe..6e33f48 100644
--- a/src/com/android/messaging/util/DebugUtils.java
+++ b/src/com/android/messaging/util/DebugUtils.java
@@ -302,11 +302,10 @@
                     final int length = dis.readInt();
                     final byte[] pdu = new byte[length];
                     dis.read(pdu, 0, length);
-                    if (format == null) {
-                        messagesTemp[i] = SmsMessage.createFromPdu(pdu);
-                    } else {
-                        messagesTemp[i] = SmsMessage.createFromPdu(pdu, format);
-                    }
+                    messagesTemp[i] =
+                            OsUtil.isAtLeastM()
+                                    ? SmsMessage.createFromPdu(pdu, format)
+                                    : SmsMessage.createFromPdu(pdu);
                 }
                 messages = messagesTemp;
             } catch (final FileNotFoundException e) {