diff --git a/current.txt b/current.txt
index 5d862d833b..5fbba07f57 100644
--- a/current.txt
+++ b/current.txt
@@ -681,7 +681,7 @@ e442ab1b440327fe4e8a3b0b8ac6874e9bc6342e91fe976eb9fea77c63961ec8 android.hardwar
 b454df853441c12f6e425e8a60dd29fda20f5e6e39b93d1103e4b37495db38aa android.hardware.radio@1.5::IRadio
 fcbb0742a88215ee7a6d7ce0825d253eb2b50391fc6c8c48667f9fd7f6d4549e android.hardware.radio@1.5::IRadioIndication
 b809193970a91ca637a4b0184767315601d32e3ef3d5992ffbc7a8d14a14f015 android.hardware.radio@1.5::IRadioResponse
-e7669bddacbdaee2cd9a87762a13fb7648639eead54bf4d767dc06eaaeb35736 android.hardware.radio@1.5::types
+6b8dcd5e3e33a524cc7ebb14671a76ad3a2d333467397ce82acc4024346386f8 android.hardware.radio@1.5::types
 3ca6616381080bdd6c08141ad12775a94ae868c58b02b1274ae3326f7de724ab android.hardware.sensors@2.1::ISensors
 3d4141c6373cd9ca02fe221a7d12343840de2255d032c38248fe8e35816b58b2 android.hardware.sensors@2.1::ISensorsCallback
 8051cc50fc90ed447f058a8b15d81f35a65f1bd9004b1de4f127edeb89b47978 android.hardware.sensors@2.1::types
diff --git a/radio/1.5/types.hal b/radio/1.5/types.hal
index 45f3b9074f..248f56e846 100644
--- a/radio/1.5/types.hal
+++ b/radio/1.5/types.hal
@@ -1023,16 +1023,37 @@ struct NetworkScanResult {
  * 3GPP2 C.S0068-0.
  */
 enum PersoSubstate : @1.0::PersoSubstate {
+    /**
+     * The device is personalized using the content of the Service Provider Name (SPN) in the SIM
+     * card.
+     */
     SIM_SPN,
     SIM_SPN_PUK,
-    /** Equivalent Home PLMN */
+    /**
+     * Service Provider and Equivalent Home PLMN
+     * The device is personalized using both the content of the GID1 (equivalent to service provider
+     * personalization) and the content of the Equivalent Home PLMN (EHPLMN) in the SIM card.
+     * If the GID1 in the SIM is absent, then just the content of the Equivalent Home PLMN
+     * is matched.
+     */
     SIM_SP_EHPLMN,
     SIM_SP_EHPLMN_PUK,
+    /**
+     * Device is personalized using the first digits of the ICCID of the SIM card.
+     */
     SIM_ICCID,
     SIM_ICCID_PUK,
+    /**
+     * Device is personalized using the content of the IMPI in the ISIM.
+     */
     SIM_IMPI,
     SIM_IMPI_PUK,
-    /** Network subset service provider */
+    /**
+     * Network Subset and Service Provider
+     * Device is personalized using both the content of GID1 (equivalent to service provider
+     * personalization) and the first digits of the IMSI (equivalent to network subset
+     * personalization).
+     */
     SIM_NS_SP,
     SIM_NS_SP_PUK,
 };