diff --git a/src/com/android/dialer/SpecialCharSequenceMgr.java b/src/com/android/dialer/SpecialCharSequenceMgr.java
index d9e2938..c212597 100644
--- a/src/com/android/dialer/SpecialCharSequenceMgr.java
+++ b/src/com/android/dialer/SpecialCharSequenceMgr.java
@@ -41,6 +41,7 @@
 import android.widget.Toast;
 
 import com.android.common.io.MoreCloseables;
+import com.android.contacts.common.compat.CompatUtils;
 import com.android.contacts.common.database.NoNullCursorAsyncQueryHandler;
 import com.android.contacts.common.util.ContactDisplayUtils;
 import com.android.contacts.common.widget.SelectPhoneAccountDialogFragment;
@@ -246,13 +247,14 @@
 
                 List<PhoneAccountHandle> subscriptionAccountHandles =
                         PhoneAccountUtils.getSubscriptionPhoneAccounts(context);
-
                 Context applicationContext = context.getApplicationContext();
                 boolean hasUserSelectedDefault = subscriptionAccountHandles.contains(
                         TelecomUtil.getDefaultOutgoingPhoneAccount(applicationContext,
                                 PhoneAccount.SCHEME_TEL));
 
-                if (subscriptionAccountHandles.size() == 1 || hasUserSelectedDefault) {
+                if (!CompatUtils.isMSIMCompatible()) {
+                    handleAdnQuery(handler, sc, Uri.parse("content://icc/adn"));
+                } else if (subscriptionAccountHandles.size() == 1 || hasUserSelectedDefault) {
                     Uri uri = TelecomUtil.getAdnUriForPhoneAccount(applicationContext, null);
                     handleAdnQuery(handler, sc, uri);
                 } else if (subscriptionAccountHandles.size() > 1){
@@ -303,7 +305,8 @@
             boolean hasUserSelectedDefault = subscriptionAccountHandles.contains(
                     TelecomUtil.getDefaultOutgoingPhoneAccount(context, PhoneAccount.SCHEME_TEL));
 
-            if (subscriptionAccountHandles.size() == 1 || hasUserSelectedDefault) {
+            if (!CompatUtils.isMSIMCompatible() || subscriptionAccountHandles.size() == 1
+                    || hasUserSelectedDefault) {
                 // Don't bring up the dialog for single-SIM or if the default outgoing account is
                 // a subscription account.
                 return TelecomUtil.handleMmi(context, input, null);
@@ -332,10 +335,14 @@
                     R.string.imei : R.string.meid;
 
             List<String> deviceIds = new ArrayList<String>();
-            for (int slot = 0; slot < telephonyManager.getPhoneCount(); slot++) {
-                String deviceId = telephonyManager.getDeviceId(slot);
-                if (!TextUtils.isEmpty(deviceId)) {
-                    deviceIds.add(deviceId);
+            if (!CompatUtils.isMSIMCompatible()) {
+                deviceIds.add(telephonyManager.getDeviceId());
+            } else {
+                for (int slot = 0; slot < telephonyManager.getPhoneCount(); slot++) {
+                    String deviceId = telephonyManager.getDeviceId(slot);
+                    if (!TextUtils.isEmpty(deviceId)) {
+                        deviceIds.add(deviceId);
+                    }
                 }
             }
 
diff --git a/src/com/android/dialer/compat/DialerCompatUtils.java b/src/com/android/dialer/compat/DialerCompatUtils.java
index 07a279a..1bcdd14 100644
--- a/src/com/android/dialer/compat/DialerCompatUtils.java
+++ b/src/com/android/dialer/compat/DialerCompatUtils.java
@@ -21,17 +21,6 @@
 
 public final class DialerCompatUtils {
     /**
-     * Determines if this version is compatible with video calling. Can also force the version to be
-     * lower through SdkVersionOverride.
-     *
-     * @return {@code true} if video calling is allowed, {@code false} otherwise.
-     */
-    public static boolean isVideoCompatible() {
-        return SdkVersionOverride.getSdkVersion(Build.VERSION_CODES.LOLLIPOP)
-                >= Build.VERSION_CODES.M;
-    }
-
-    /**
      * Determines if this version is compatible with a default dialer. Can also force the version to
      * be lower through SdkVersionOverride.
      *
diff --git a/src/com/android/dialer/util/TelecomUtil.java b/src/com/android/dialer/util/TelecomUtil.java
index a0c8334..a617af6 100644
--- a/src/com/android/dialer/util/TelecomUtil.java
+++ b/src/com/android/dialer/util/TelecomUtil.java
@@ -25,9 +25,12 @@
 import android.support.v4.content.ContextCompat;
 import android.telecom.PhoneAccountHandle;
 import android.telecom.TelecomManager;
+import android.telephony.PhoneNumberUtils;
+import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 import android.util.Log;
 
+import com.android.contacts.common.compat.CompatUtils;
 import com.android.dialer.compat.DialerCompatUtils;
 
 import java.util.ArrayList;
@@ -111,7 +114,7 @@
     }
 
     public static List<PhoneAccountHandle> getCallCapablePhoneAccounts(Context context) {
-        if (hasReadPhoneStatePermission(context)) {
+        if (hasReadPhoneStatePermission(context) && CompatUtils.isMSIMCompatible()) {
             return getTelecomManager(context).getCallCapablePhoneAccounts();
         }
         return new ArrayList<>();
@@ -127,14 +130,22 @@
     public static boolean isVoicemailNumber(Context context, PhoneAccountHandle accountHandle,
             String number) {
         if (hasReadPhoneStatePermission(context)) {
-            return getTelecomManager(context).isVoiceMailNumber(accountHandle, number);
+            if (CompatUtils.isMSIMCompatible()) {
+                return getTelecomManager(context).isVoiceMailNumber(accountHandle, number);
+            } else {
+                return PhoneNumberUtils.isVoiceMailNumber(number);
+            }
         }
         return false;
     }
 
     public static String getVoicemailNumber(Context context, PhoneAccountHandle accountHandle) {
         if (hasReadPhoneStatePermission(context)) {
-            return getTelecomManager(context).getVoiceMailNumber(accountHandle);
+            if (CompatUtils.isMSIMCompatible()) {
+                return getTelecomManager(context).getVoiceMailNumber(accountHandle);
+            } else {
+                return getTelephonyManager(context).getVoiceMailNumber();
+            }
         }
         return null;
     }
@@ -210,4 +221,8 @@
     private static TelecomManager getTelecomManager(Context context) {
         return (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
     }
+
+    private static TelephonyManager getTelephonyManager(Context context) {
+        return (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+    }
 }