diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index c48bd211fac29..620f025ff90e5 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -9956,7 +9956,8 @@ public class TelephonyManager {
     }
 
     /**
-     * Sets the roaming mode for CDMA phone to the given mode {@code mode}.
+     * Sets the roaming mode for CDMA phone to the given mode {@code mode}. If the phone is not
+     * CDMA capable, this method does nothing.
      *
      * <p>If this object has been created with {@link #createForSubscriptionId}, applies to the
      * given subId. Otherwise, applies to {@link SubscriptionManager#getDefaultSubscriptionId()}
@@ -9979,6 +9980,7 @@ public class TelephonyManager {
     @SystemApi
     @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
     public void setCdmaRoamingMode(@CdmaRoamingMode int mode) {
+        if (getPhoneType() != PHONE_TYPE_CDMA) return;
         try {
             ITelephony telephony = getITelephony();
             if (telephony != null) {
@@ -10059,7 +10061,8 @@ public class TelephonyManager {
     }
 
     /**
-     * Sets the subscription mode for CDMA phone to the given mode {@code mode}.
+     * Sets the subscription mode for CDMA phone to the given mode {@code mode}. If the phone is not
+     * CDMA capable, this method does nothing.
      *
      * @param mode CDMA subscription mode.
      * @throws SecurityException if the caller does not have the permission.
@@ -10078,6 +10081,7 @@ public class TelephonyManager {
     @SystemApi
     @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
     public void setCdmaSubscriptionMode(@CdmaSubscription int mode) {
+        if (getPhoneType() != PHONE_TYPE_CDMA) return;
         try {
             ITelephony telephony = getITelephony();
             if (telephony != null) {