diff --git a/nfc/api/system-current.txt b/nfc/api/system-current.txt
index e97b15d..dd1c340 100644
--- a/nfc/api/system-current.txt
+++ b/nfc/api/system-current.txt
@@ -85,6 +85,10 @@
     field public static final int HCE_ACTIVATE = 1; // 0x1
     field public static final int HCE_DATA_TRANSFERRED = 2; // 0x2
     field public static final int HCE_DEACTIVATE = 3; // 0x3
+    field @FlaggedApi("android.nfc.nfc_oem_extension") public static final int NFCEE_TECH_A = 1; // 0x1
+    field @FlaggedApi("android.nfc.nfc_oem_extension") public static final int NFCEE_TECH_B = 2; // 0x2
+    field @FlaggedApi("android.nfc.nfc_oem_extension") public static final int NFCEE_TECH_F = 4; // 0x4
+    field @FlaggedApi("android.nfc.nfc_oem_extension") public static final int NFCEE_TECH_NONE = 0; // 0x0
     field public static final int POLLING_STATE_CHANGE_ALREADY_IN_REQUESTED_STATE = 2; // 0x2
     field public static final int POLLING_STATE_CHANGE_SUCCEEDED = 1; // 0x1
     field public static final int STATUS_OK = 0; // 0x0
diff --git a/nfc/java/android/nfc/NfcOemExtension.java b/nfc/java/android/nfc/NfcOemExtension.java
index fb11875..b46e343 100644
--- a/nfc/java/android/nfc/NfcOemExtension.java
+++ b/nfc/java/android/nfc/NfcOemExtension.java
@@ -150,28 +150,24 @@
 
     /**
      * Technology Type for {@link #getActiveNfceeList()}.
-     * @hide
      */
     @FlaggedApi(Flags.FLAG_NFC_OEM_EXTENSION)
     public static final int NFCEE_TECH_NONE = 0;
 
     /**
      * Technology Type for {@link #getActiveNfceeList()}.
-     * @hide
      */
     @FlaggedApi(Flags.FLAG_NFC_OEM_EXTENSION)
     public static final int NFCEE_TECH_A = 1;
 
     /**
      * Technology Type for {@link #getActiveNfceeList()}.
-     * @hide
      */
     @FlaggedApi(Flags.FLAG_NFC_OEM_EXTENSION)
     public static final int NFCEE_TECH_B = 1 << 1;
 
     /**
      * Technology Type for {@link #getActiveNfceeList()}.
-     * @hide
      */
     @FlaggedApi(Flags.FLAG_NFC_OEM_EXTENSION)
     public static final int NFCEE_TECH_F = 1 << 2;
@@ -670,12 +666,15 @@
     /**
      * Get the Active NFCEE (NFC Execution Environment) List
      *
-     * @see Reader#getName() for the list of possible NFCEE names.
-     *
      * @return Map< String, @NfceeTechnology Integer >
      *         A HashMap where keys are activated secure elements and
-     *         the values are bitmap of technologies supported by each secure element
-     *         on success keys can contain "eSE" and "UICC", otherwise empty map.
+     *         the values are bitmap of technologies supported by each secure element:
+     *          NFCEE_TECH_A == 0x1
+     *          NFCEE_TECH_B == 0x2
+     *          NFCEE_TECH_F == 0x4
+     *         and keys can contain "eSE" and "SIM" with a number,
+     *         in case of failure an empty map is returned.
+     *         @see Reader#getName() for the list of possible NFCEE names.
      */
     @NonNull
     @FlaggedApi(Flags.FLAG_NFC_OEM_EXTENSION)