diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index ae6a3e8469506..1860ecb7c2747 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -14506,6 +14506,15 @@ public class TelephonyManager {
     public static final String CAPABILITY_THERMAL_MITIGATION_DATA_THROTTLING =
             "CAPABILITY_THERMAL_MITIGATION_DATA_THROTTLING";
 
+    /**
+     * Indicates whether modem supports handling parsed SIM phonebook records through the RIL,
+     * both batched reads and individual writes.
+     *
+     * @hide
+     */
+    public static final String CAPABILITY_SIM_PHONEBOOK_IN_MODEM =
+            "CAPABILITY_SIM_PHONEBOOK_IN_MODEM";
+
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
     @StringDef(prefix = "CAPABILITY_", value = {
@@ -14513,6 +14522,7 @@ public class TelephonyManager {
             CAPABILITY_ALLOWED_NETWORK_TYPES_USED,
             CAPABILITY_NR_DUAL_CONNECTIVITY_CONFIGURATION_AVAILABLE,
             CAPABILITY_THERMAL_MITIGATION_DATA_THROTTLING,
+            CAPABILITY_SIM_PHONEBOOK_IN_MODEM
     })
     public @interface RadioInterfaceCapability {}
 
diff --git a/telephony/java/com/android/internal/telephony/RILConstants.java b/telephony/java/com/android/internal/telephony/RILConstants.java
index 3eda7482117fc..822fc44146d66 100644
--- a/telephony/java/com/android/internal/telephony/RILConstants.java
+++ b/telephony/java/com/android/internal/telephony/RILConstants.java
@@ -497,6 +497,9 @@ public interface RILConstants {
     int RIL_REQUEST_ENABLE_MODEM = 146;
     int RIL_REQUEST_GET_MODEM_STATUS = 147;
     int RIL_REQUEST_CDMA_SEND_SMS_EXPECT_MORE = 148;
+    int RIL_REQUEST_GET_SIM_PHONEBOOK_CAPACITY = 149;
+    int RIL_REQUEST_GET_SIM_PHONEBOOK_RECORDS = 150;
+    int RIL_REQUEST_UPDATE_SIM_PHONEBOOK_RECORD = 151;
 
     /* The following requests are not defined in RIL.h */
     int RIL_REQUEST_HAL_NON_RIL_BASE = 200;
@@ -582,6 +585,8 @@ public interface RILConstants {
     int RIL_UNSOL_NETWORK_SCAN_RESULT = 1049;
     int RIL_UNSOL_KEEPALIVE_STATUS = 1050;
     int RIL_UNSOL_UNTHROTTLE_APN = 1052;
+    int RIL_UNSOL_RESPONSE_SIM_PHONEBOOK_CHANGED = 1053;
+    int RIL_UNSOL_RESPONSE_SIM_PHONEBOOK_RECORDS_RECEIVED = 1054;
 
     /* The following unsols are not defined in RIL.h */
     int RIL_UNSOL_HAL_NON_RIL_BASE = 1100;