diff --git a/src/com/android/phone/CarrierConfigLoader.java b/src/com/android/phone/CarrierConfigLoader.java
index 392ab6e..077652f 100644
--- a/src/com/android/phone/CarrierConfigLoader.java
+++ b/src/com/android/phone/CarrierConfigLoader.java
@@ -194,7 +194,8 @@
 
                 case EVENT_SYSTEM_UNLOCKED:
                 {
-                    for (int i = 0; i < TelephonyManager.from(mContext).getMaxPhoneCount(); ++i) {
+                    for (int i = 0; i < TelephonyManager.from(mContext)
+                            .getSupportedModemCount(); ++i) {
                         // When user unlock device, we should only try to send broadcast again if we
                         // have sent it before unlock. This will avoid we try to load carrier config
                         // when SIM is still loading when unlock happens.
@@ -211,7 +212,8 @@
                     // Only update if there are cached config removed to avoid updating config for
                     // unrelated packages.
                     if (clearCachedConfigForPackage(carrierPackageName)) {
-                        int numPhones = TelephonyManager.from(mContext).getMaxPhoneCount();
+                        int numPhones = TelephonyManager.from(mContext)
+                                .getSupportedModemCount();
                         for (int i = 0; i < numPhones; ++i) {
                             updateConfigForPhoneId(i);
                         }
@@ -523,7 +525,7 @@
         pkgFilter.addDataScheme("package");
         context.registerReceiver(mPackageReceiver, pkgFilter);
 
-        int numPhones = TelephonyManager.from(context).getMaxPhoneCount();
+        int numPhones = TelephonyManager.from(context).getSupportedModemCount();
         mConfigFromDefaultApp = new PersistableBundle[numPhones];
         mConfigFromCarrierApp = new PersistableBundle[numPhones];
         mOverrideConfigs = new PersistableBundle[numPhones];
diff --git a/src/com/android/services/telephony/RadioOnHelper.java b/src/com/android/services/telephony/RadioOnHelper.java
index 85f94ab..741a6c5 100644
--- a/src/com/android/services/telephony/RadioOnHelper.java
+++ b/src/com/android/services/telephony/RadioOnHelper.java
@@ -53,7 +53,7 @@
             return;
         }
         mListeners = new ArrayList<>(2);
-        for (int i = 0; i < TelephonyManager.getDefault().getMaxPhoneCount(); i++) {
+        for (int i = 0; i < TelephonyManager.getDefault().getSupportedModemCount(); i++) {
             mListeners.add(new RadioOnStateListener());
         }
     }
@@ -76,7 +76,7 @@
         mCallback = callback;
         mInProgressListeners.clear();
         mIsRadioOnCallingEnabled = false;
-        for (int i = 0; i < TelephonyManager.getDefault().getMaxPhoneCount(); i++) {
+        for (int i = 0; i < TelephonyManager.getDefault().getSupportedModemCount(); i++) {
             Phone phone = PhoneFactory.getPhone(i);
             if (phone == null) {
                 continue;