diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl
index b44ab71..080a877 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl
@@ -35,7 +35,7 @@
 /* @hide */
 @JavaDerive(toString=true) @VintfStability
 parcelable ActivityStatsTechSpecificInfo {
-  android.hardware.radio.AccessNetwork rat;
+  android.hardware.radio.AccessNetwork rat = android.hardware.radio.AccessNetwork.UNKNOWN;
   int frequencyRange;
   int[] txmModetimeMs;
   int rxModeTimeMs;
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/DeviceStateType.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/DeviceStateType.aidl
index 1159f93..023658c 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/DeviceStateType.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/DeviceStateType.aidl
@@ -33,7 +33,7 @@
 
 package android.hardware.radio.modem;
 /* @hide */
-@Backing(type="int") @JavaDerive(toString=true) @VintfStability
+@Backing(type="int") @JavaDerive(toString=true) @SuppressWarnings(value={"redundant-name"}) @VintfStability
 enum DeviceStateType {
   POWER_SAVE_MODE,
   CHARGING_STATE,
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/HardwareConfigModem.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/HardwareConfigModem.aidl
index d453cb0..7d5537f 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/HardwareConfigModem.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/HardwareConfigModem.aidl
@@ -36,7 +36,7 @@
 @JavaDerive(toString=true) @VintfStability
 parcelable HardwareConfigModem {
   int rilModel;
-  android.hardware.radio.RadioTechnology rat;
+  android.hardware.radio.RadioTechnology rat = android.hardware.radio.RadioTechnology.UNKNOWN;
   int maxVoiceCalls;
   int maxDataCalls;
   int maxStandby;
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ImeiInfo.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ImeiInfo.aidl
index a2df30d..96fb5a8 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ImeiInfo.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ImeiInfo.aidl
@@ -35,11 +35,12 @@
 /* @hide */
 @JavaDerive(toString=true) @VintfStability
 parcelable ImeiInfo {
-  android.hardware.radio.modem.ImeiInfo.ImeiType type;
+  android.hardware.radio.modem.ImeiInfo.ImeiType type = android.hardware.radio.modem.ImeiInfo.ImeiType.INVALID;
   String imei;
   String svn;
   @Backing(type="int") @VintfStability
   enum ImeiType {
+    INVALID = 0,
     PRIMARY = 1,
     SECONDARY = 2,
   }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvItem.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvItem.aidl
index 104cb40..bafcd19 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvItem.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvItem.aidl
@@ -38,6 +38,10 @@
   /**
    * @deprecated NV APIs are deprecated starting from Android U.
    */
+  INVALID = 0,
+  /**
+   * @deprecated NV APIs are deprecated starting from Android U.
+   */
   CDMA_MEID = 1,
   /**
    * @deprecated NV APIs are deprecated starting from Android U.
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvWriteItem.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvWriteItem.aidl
index d9ecf65..c941246 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvWriteItem.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/NvWriteItem.aidl
@@ -38,7 +38,7 @@
   /**
    * @deprecated NV APIs are deprecated starting from Android U.
    */
-  android.hardware.radio.modem.NvItem itemId;
+  android.hardware.radio.modem.NvItem itemId = android.hardware.radio.modem.NvItem.INVALID;
   /**
    * @deprecated NV APIs are deprecated starting from Android U.
    */
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ResetNvType.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ResetNvType.aidl
index b4208b7..e9937f0 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ResetNvType.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/ResetNvType.aidl
@@ -33,7 +33,7 @@
 
 package android.hardware.radio.modem;
 /* @hide */
-@Backing(type="int") @JavaDerive(toString=true) @VintfStability
+@Backing(type="int") @JavaDerive(toString=true) @SuppressWarnings(value={"redundant-name"}) @VintfStability
 enum ResetNvType {
   RELOAD,
   ERASE,
diff --git a/radio/aidl/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl b/radio/aidl/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl
index 7ca4021..6ad47fc 100644
--- a/radio/aidl/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl
+++ b/radio/aidl/android/hardware/radio/modem/ActivityStatsTechSpecificInfo.aidl
@@ -36,7 +36,7 @@
      * Radio access technology. Set UNKNOWN if the Activity statistics
      * is RAT independent.
      */
-    AccessNetwork rat;
+    AccessNetwork rat = AccessNetwork.UNKNOWN;
     /**
      * Frequency range. Values are FREQUENCY_RANGE_
      * Set FREQUENCY_RANGE_UNKNOWN if the Activity statistics when frequency range
diff --git a/radio/aidl/android/hardware/radio/modem/DeviceStateType.aidl b/radio/aidl/android/hardware/radio/modem/DeviceStateType.aidl
index c1f4cd6..86df920 100644
--- a/radio/aidl/android/hardware/radio/modem/DeviceStateType.aidl
+++ b/radio/aidl/android/hardware/radio/modem/DeviceStateType.aidl
@@ -20,6 +20,7 @@
 @VintfStability
 @Backing(type="int")
 @JavaDerive(toString=true)
+@SuppressWarnings(value={"redundant-name"})
 enum DeviceStateType {
     /**
      * Device power save mode (provided by PowerManager). True indicates the device is in
diff --git a/radio/aidl/android/hardware/radio/modem/HardwareConfigModem.aidl b/radio/aidl/android/hardware/radio/modem/HardwareConfigModem.aidl
index 1ba3562..4818c9e 100644
--- a/radio/aidl/android/hardware/radio/modem/HardwareConfigModem.aidl
+++ b/radio/aidl/android/hardware/radio/modem/HardwareConfigModem.aidl
@@ -34,7 +34,7 @@
     /**
      * Bitset value, based on RadioTechnology.
      */
-    RadioTechnology rat;
+    RadioTechnology rat = RadioTechnology.UNKNOWN;
     /**
      * Maximum number of concurrent active voice calls.
      */
diff --git a/radio/aidl/android/hardware/radio/modem/ImeiInfo.aidl b/radio/aidl/android/hardware/radio/modem/ImeiInfo.aidl
index 6d33505..82fade5 100644
--- a/radio/aidl/android/hardware/radio/modem/ImeiInfo.aidl
+++ b/radio/aidl/android/hardware/radio/modem/ImeiInfo.aidl
@@ -29,6 +29,8 @@
      * ImeiType enum is used identify the IMEI as primary or secondary as mentioned in GSMA TS.37
      */
     enum ImeiType {
+        /** Must not be used. */
+        INVALID = 0,
         /**
          * This is the primary IMEI of the device as mentioned in the GSMA TS.37. In a multi-SIM
          * device the modem must set one IMEI with this type as mentioned in GSMA TS37_2.2_REQ_8.
@@ -40,7 +42,7 @@
     }
 
     /** Primary or secondary IMEI as mentioned in GSMA spec TS.37 */
-    ImeiType type;
+    ImeiType type = ImeiType.INVALID;
     /**
      * IMEI value, see 3gpp spec 23.003 section 6. Note: This primary IMEI mapping must be
      * permanent throughout the lifetime of the device irrespective of the factory data reset,
diff --git a/radio/aidl/android/hardware/radio/modem/NvItem.aidl b/radio/aidl/android/hardware/radio/modem/NvItem.aidl
index a62624e..d646ff7 100644
--- a/radio/aidl/android/hardware/radio/modem/NvItem.aidl
+++ b/radio/aidl/android/hardware/radio/modem/NvItem.aidl
@@ -24,6 +24,10 @@
 @JavaDerive(toString=true)
 enum NvItem {
     /**
+     * @deprecated NV APIs are deprecated starting from Android U.
+     */
+    INVALID = 0,
+    /**
      * CDMA radio and account information (items 1-10)
      * CDMA MEID (hex)
      * @deprecated NV APIs are deprecated starting from Android U.
diff --git a/radio/aidl/android/hardware/radio/modem/NvWriteItem.aidl b/radio/aidl/android/hardware/radio/modem/NvWriteItem.aidl
index 1c6c11e..482126a 100644
--- a/radio/aidl/android/hardware/radio/modem/NvWriteItem.aidl
+++ b/radio/aidl/android/hardware/radio/modem/NvWriteItem.aidl
@@ -27,7 +27,7 @@
     /**
      * @deprecated NV APIs are deprecated starting from Android U.
      */
-    NvItem itemId;
+    NvItem itemId = NvItem.INVALID;
     /**
      * @deprecated NV APIs are deprecated starting from Android U.
      */
diff --git a/radio/aidl/android/hardware/radio/modem/ResetNvType.aidl b/radio/aidl/android/hardware/radio/modem/ResetNvType.aidl
index e290a52..b6be54d 100644
--- a/radio/aidl/android/hardware/radio/modem/ResetNvType.aidl
+++ b/radio/aidl/android/hardware/radio/modem/ResetNvType.aidl
@@ -23,6 +23,7 @@
 @VintfStability
 @Backing(type="int")
 @JavaDerive(toString=true)
+@SuppressWarnings(value={"redundant-name"})
 enum ResetNvType {
     /**
      * Reload all NV items