diff --git a/Android.mk b/Android.mk
index 4d8a37c..70e91e5 100644
--- a/Android.mk
+++ b/Android.mk
@@ -451,6 +451,7 @@
 	frameworks/base/telephony/java/android/telephony/SignalStrength.aidl \
 	frameworks/base/telephony/java/android/telephony/IccOpenLogicalChannelResponse.aidl \
 	frameworks/base/telephony/java/android/telephony/NeighboringCellInfo.aidl \
+	frameworks/base/telephony/java/android/telephony/ModemActivityInfo.aidl \
 	frameworks/base/location/java/android/location/Location.aidl \
 	frameworks/base/location/java/android/location/Address.aidl \
 	frameworks/base/location/java/android/location/Criteria.aidl \
diff --git a/telephony/java/android/telephony/ModemActivityInfo.aidl b/telephony/java/android/telephony/ModemActivityInfo.aidl
new file mode 100644
index 0000000..b85ef7a
--- /dev/null
+++ b/telephony/java/android/telephony/ModemActivityInfo.aidl
@@ -0,0 +1,20 @@
+/*
+**
+** Copyright 2015, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+package android.telephony;
+
+parcelable ModemActivityInfo;
diff --git a/telephony/java/android/telephony/ModemActivityInfo.java b/telephony/java/android/telephony/ModemActivityInfo.java
new file mode 100644
index 0000000..ea96e7c
--- /dev/null
+++ b/telephony/java/android/telephony/ModemActivityInfo.java
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Arrays;
+
+/**
+ * Reports modem activity information
+ * @hide
+ */
+public class ModemActivityInfo implements Parcelable {
+    /**
+     * Tx power index
+     * index 0 = tx_power < 0dBm
+     * index 1 = 0dBm < tx_power < 5dBm
+     * index 2 = 5dBm < tx_power < 15dBm
+     * index 3 = 15dBm < tx_power < 20dBm
+     * index 4 = tx_power > 20dBm
+     */
+    public static final int TX_POWER_LEVELS = 5;
+
+    private final long mTimestamp;
+    private final int mSleepTimeMs;
+    private final int mIdleTimeMs;
+    private final int [] mTxTimeMs = new int[TX_POWER_LEVELS];
+    private final int mRxTimeMs;
+    private final int mEnergyUsed;
+
+    public ModemActivityInfo(long timestamp, int sleepTimeMs, int idleTimeMs,
+                        int[] txTimeMs, int rxTimeMs, int energyUsed) {
+        mTimestamp = timestamp;
+        mSleepTimeMs = sleepTimeMs;
+        mIdleTimeMs = idleTimeMs;
+        System.arraycopy(txTimeMs, 0, mTxTimeMs, 0, Math.min(txTimeMs.length, TX_POWER_LEVELS));
+        mRxTimeMs = rxTimeMs;
+        mEnergyUsed = energyUsed;
+    }
+
+    @Override
+    public String toString() {
+        return "ModemActivityInfo{"
+            + " mTimestamp=" + mTimestamp
+            + " mSleepTimeMs=" + mSleepTimeMs
+            + " mTxTimeMs[]=" + Arrays.toString(mTxTimeMs)
+            + " mRxTimeMs=" + mRxTimeMs
+            + " mEnergyUsed=" + mEnergyUsed
+            + "}";
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+
+    public static final Parcelable.Creator<ModemActivityInfo> CREATOR =
+            new Parcelable.Creator<ModemActivityInfo>() {
+        public ModemActivityInfo createFromParcel(Parcel in) {
+            long timestamp = in.readLong();
+            int sleepTimeMs = in.readInt();
+            int idleTimeMs = in.readInt();
+            int[] txTimeMs = new int[TX_POWER_LEVELS];
+            for (int i = 0; i < TX_POWER_LEVELS; i++) {
+                txTimeMs[i] = in.readInt();
+            }
+            int rxTimeMs = in.readInt();
+            int energyUsed = in.readInt();
+            return new ModemActivityInfo(timestamp, sleepTimeMs, idleTimeMs,
+                                txTimeMs, rxTimeMs, energyUsed);
+        }
+
+        public ModemActivityInfo[] newArray(int size) {
+            return new ModemActivityInfo[size];
+        }
+    };
+
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeLong(mTimestamp);
+        dest.writeInt(mSleepTimeMs);
+        dest.writeInt(mIdleTimeMs);
+        for (int i = 0; i < TX_POWER_LEVELS; i++) {
+            dest.writeInt(mTxTimeMs[i]);
+        }
+        dest.writeInt(mRxTimeMs);
+        dest.writeInt(mEnergyUsed);
+    }
+
+    /**
+     * @return timestamp of record creation
+     */
+    public long getTimestamp() {
+        return mTimestamp;
+    }
+
+    /**
+     * @return tx time in ms. It's an array of tx times
+     * with each index...
+     */
+    public int [] getTxTimeMillis() {
+        return mTxTimeMs;
+    }
+
+    /**
+     * @return sleep time in ms.
+     */
+    public int getSleepTimeMillis() {
+        return mSleepTimeMs;
+    }
+
+    /**
+     * @return idle time in ms.
+     */
+    public int getIdleTimeMillis() {
+        return mIdleTimeMs;
+    }
+
+    /**
+     * @return rx time in ms.
+     */
+    public int getRxTimeMillis() {
+        return mRxTimeMs;
+    }
+
+    /**
+     * product of current(mA), voltage(V) and time(ms)
+     * @return energy used
+     */
+    public int getEnergyUsed () {
+        return mEnergyUsed;
+    }
+
+    /**
+     * @return if the record is valid
+     */
+    public boolean isValid() {
+        int totalTxTimeMs = 0;
+        int txTime [] = getTxTimeMillis();
+        for (int i = 0; i < TX_POWER_LEVELS; i++) {
+            totalTxTimeMs += txTime[i];
+        }
+        return ((getIdleTimeMillis() != 0) || (totalTxTimeMs != 0)
+                || (getSleepTimeMillis() != 0) || (getIdleTimeMillis() != 0));
+    }
+}
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index 11d0ea6..77f90ab3 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -23,6 +23,7 @@
 import android.telephony.IccOpenLogicalChannelResponse;
 import android.telephony.NeighboringCellInfo;
 import android.telephony.RadioAccessFamily;
+import android.telephony.ModemActivityInfo;
 import java.util.List;
 
 
@@ -953,4 +954,10 @@
      * if no locale could be derived.
      */
     String getLocaleFromDefaultSim();
+
+    /**
+     * Return the modem activity info.
+     *@hide
+     */
+    ModemActivityInfo getModemActivityInfo();
 }
diff --git a/telephony/java/com/android/internal/telephony/RILConstants.java b/telephony/java/com/android/internal/telephony/RILConstants.java
index 12541d8..8d48c86 100644
--- a/telephony/java/com/android/internal/telephony/RILConstants.java
+++ b/telephony/java/com/android/internal/telephony/RILConstants.java
@@ -323,6 +323,7 @@
     int RIL_REQUEST_START_LCE = 132;
     int RIL_REQUEST_STOP_LCE = 133;
     int RIL_REQUEST_PULL_LCEDATA = 134;
+    int RIL_REQUEST_GET_ACTIVITY_INFO = 135;
 
     int RIL_UNSOL_RESPONSE_BASE = 1000;
     int RIL_UNSOL_RESPONSE_RADIO_STATE_CHANGED = 1000;