diff --git a/telephony/java/android/telephony/CellIdentity.java b/telephony/java/android/telephony/CellIdentity.java
index 890a6ea..2a41829 100644
--- a/telephony/java/android/telephony/CellIdentity.java
+++ b/telephony/java/android/telephony/CellIdentity.java
@@ -175,7 +175,10 @@
         }
 
         CellIdentity o = (CellIdentity) other;
-        return TextUtils.equals(mAlphaLong, o.mAlphaLong)
+        return mType == o.mType
+                && TextUtils.equals(mMccStr, o.mMccStr)
+                && TextUtils.equals(mMncStr, o.mMncStr)
+                && TextUtils.equals(mAlphaLong, o.mAlphaLong)
                 && TextUtils.equals(mAlphaShort, o.mAlphaShort);
     }
 
@@ -233,4 +236,4 @@
     protected void log(String s) {
         Rlog.w(mTag, s);
     }
-}
\ No newline at end of file
+}
diff --git a/telephony/java/android/telephony/CellIdentityTdscdma.java b/telephony/java/android/telephony/CellIdentityTdscdma.java
index 3070bd1..feff238 100644
--- a/telephony/java/android/telephony/CellIdentityTdscdma.java
+++ b/telephony/java/android/telephony/CellIdentityTdscdma.java
@@ -16,8 +16,8 @@
 
 package android.telephony;
 
+import android.annotation.Nullable;
 import android.os.Parcel;
-import android.text.TextUtils;
 
 import java.util.Objects;
 
@@ -34,6 +34,8 @@
     private final int mCid;
     // 8-bit Cell Parameters ID described in TS 25.331, 0..127, INT_MAX if unknown.
     private final int mCpid;
+    // 16-bit UMTS Absolute RF Channel Number described in TS 25.101 sec. 5.4.3
+    private final int mUarfcn;
 
     /**
      * @hide
@@ -43,6 +45,7 @@
         mLac = Integer.MAX_VALUE;
         mCid = Integer.MAX_VALUE;
         mCpid = Integer.MAX_VALUE;
+        mUarfcn = Integer.MAX_VALUE;
     }
 
     /**
@@ -51,11 +54,12 @@
      * @param lac 16-bit Location Area Code, 0..65535, INT_MAX if unknown
      * @param cid 28-bit UMTS Cell Identity described in TS 25.331, 0..268435455, INT_MAX if unknown
      * @param cpid 8-bit Cell Parameters ID described in TS 25.331, 0..127, INT_MAX if unknown
+     * @param uarfcn 16-bit UMTS Absolute RF Channel Number described in TS 25.101 sec. 5.4.3
      *
      * @hide
      */
-    public CellIdentityTdscdma(int mcc, int mnc, int lac, int cid, int cpid) {
-        this(String.valueOf(mcc), String.valueOf(mnc), lac, cid, cpid, null, null);
+    public CellIdentityTdscdma(int mcc, int mnc, int lac, int cid, int cpid, int uarfcn) {
+        this(String.valueOf(mcc), String.valueOf(mnc), lac, cid, cpid, uarfcn, null, null);
     }
 
     /**
@@ -64,39 +68,24 @@
      * @param lac 16-bit Location Area Code, 0..65535, INT_MAX if unknown
      * @param cid 28-bit UMTS Cell Identity described in TS 25.331, 0..268435455, INT_MAX if unknown
      * @param cpid 8-bit Cell Parameters ID described in TS 25.331, 0..127, INT_MAX if unknown
-     *
-     * FIXME: This is a temporary constructor to facilitate migration.
-     * @hide
-     */
-    public CellIdentityTdscdma(String mcc, String mnc, int lac, int cid, int cpid) {
-        super(TAG, TYPE_TDSCDMA, mcc, mnc, null, null);
-        mLac = lac;
-        mCid = cid;
-        mCpid = cpid;
-    }
-
-    /**
-     * @param mcc 3-digit Mobile Country Code in string format
-     * @param mnc 2 or 3-digit Mobile Network Code in string format
-     * @param lac 16-bit Location Area Code, 0..65535, INT_MAX if unknown
-     * @param cid 28-bit UMTS Cell Identity described in TS 25.331, 0..268435455, INT_MAX if unknown
-     * @param cpid 8-bit Cell Parameters ID described in TS 25.331, 0..127, INT_MAX if unknown
+     * @param uarfcn 16-bit UMTS Absolute RF Channel Number described in TS 25.101 sec. 5.4.3
      * @param alphal long alpha Operator Name String or Enhanced Operator Name String
      * @param alphas short alpha Operator Name String or Enhanced Operator Name String
      *
      * @hide
      */
-    public CellIdentityTdscdma(String mcc, String mnc, int lac, int cid, int cpid,
+    public CellIdentityTdscdma(String mcc, String mnc, int lac, int cid, int cpid, int uarfcn,
             String alphal, String alphas) {
         super(TAG, TYPE_TDSCDMA, mcc, mnc, alphal, alphas);
         mLac = lac;
         mCid = cid;
         mCpid = cpid;
+        mUarfcn = uarfcn;
     }
 
     private CellIdentityTdscdma(CellIdentityTdscdma cid) {
         this(cid.mMccStr, cid.mMncStr, cid.mLac, cid.mCid,
-                cid.mCpid, cid.mAlphaLong, cid.mAlphaShort);
+                cid.mCpid, cid.mUarfcn, cid.mAlphaLong, cid.mAlphaShort);
     }
 
     CellIdentityTdscdma copy() {
@@ -140,9 +129,32 @@
         return mCpid;
     }
 
+    /** @hide */
     @Override
-    public int hashCode() {
-        return Objects.hash(mLac, mCid, mCpid, super.hashCode());
+    public int getChannelNumber() {
+        return mUarfcn;
+    }
+
+    /**
+     * @return The long alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string). May be null if unknown.
+     *
+     * @hide
+     */
+    @Nullable
+    public CharSequence getOperatorAlphaLong() {
+        return mAlphaLong;
+    }
+
+    /**
+     * @return The short alpha tag associated with the current scan result (may be the operator
+     * name string or extended operator name string).  May be null if unknown.
+     *
+     * @hide
+     */
+    @Nullable
+    public CharSequence getOperatorAlphaShort() {
+        return mAlphaShort;
     }
 
     @Override
@@ -156,24 +168,29 @@
         }
 
         CellIdentityTdscdma o = (CellIdentityTdscdma) other;
-        return TextUtils.equals(mMccStr, o.mMccStr)
-                && TextUtils.equals(mMncStr, o.mMncStr)
-                && mLac == o.mLac
+        return  mLac == o.mLac
                 && mCid == o.mCid
                 && mCpid == o.mCpid
+                && mUarfcn == o.mUarfcn
                 && super.equals(other);
     }
 
     @Override
+    public int hashCode() {
+        return Objects.hash(mLac, mCid, mCpid, mUarfcn, super.hashCode());
+    }
+
+    @Override
     public String toString() {
         return new StringBuilder(TAG)
         .append(":{ mMcc=").append(mMccStr)
         .append(" mMnc=").append(mMncStr)
+        .append(" mAlphaLong=").append(mAlphaLong)
+        .append(" mAlphaShort=").append(mAlphaShort)
         .append(" mLac=").append(mLac)
         .append(" mCid=").append(mCid)
         .append(" mCpid=").append(mCpid)
-        .append(" mAlphaLong=").append(mAlphaLong)
-        .append(" mAlphaShort=").append(mAlphaShort)
+        .append(" mUarfcn=").append(mUarfcn)
         .append("}").toString();
     }
 
@@ -185,6 +202,7 @@
         dest.writeInt(mLac);
         dest.writeInt(mCid);
         dest.writeInt(mCpid);
+        dest.writeInt(mUarfcn);
     }
 
     /** Construct from Parcel, type has already been processed */
@@ -193,7 +211,7 @@
         mLac = in.readInt();
         mCid = in.readInt();
         mCpid = in.readInt();
-
+        mUarfcn = in.readInt();
         if (DBG) log(toString());
     }
 
diff --git a/telephony/java/android/telephony/CellIdentityWcdma.java b/telephony/java/android/telephony/CellIdentityWcdma.java
index f1167a6..b7f8fc8 100644
--- a/telephony/java/android/telephony/CellIdentityWcdma.java
+++ b/telephony/java/android/telephony/CellIdentityWcdma.java
@@ -34,7 +34,7 @@
     private final int mCid;
     // 9-bit UMTS Primary Scrambling Code described in TS 25.331, 0..511
     private final int mPsc;
-    // 16-bit UMTS Absolute RF Channel Number
+    // 16-bit UMTS Absolute RF Channel Number described in TS 25.101 sec. 5.4.4
     private final int mUarfcn;
 
     /**
@@ -69,7 +69,7 @@
      * @param lac 16-bit Location Area Code, 0..65535
      * @param cid 28-bit UMTS Cell Identity
      * @param psc 9-bit UMTS Primary Scrambling Code
-     * @param uarfcn 16-bit UMTS Absolute RF Channel Number
+     * @param uarfcn 16-bit UMTS Absolute RF Channel Number described in TS 25.101 sec. 5.4.3
      *
      * @hide
      */
@@ -82,7 +82,7 @@
      * @param lac 16-bit Location Area Code, 0..65535
      * @param cid 28-bit UMTS Cell Identity
      * @param psc 9-bit UMTS Primary Scrambling Code
-     * @param uarfcn 16-bit UMTS Absolute RF Channel Number
+     * @param uarfcn 16-bit UMTS Absolute RF Channel Number described in TS 25.101 sec. 5.4.3
      * @param mccStr 3-digit Mobile Country Code in string format
      * @param mncStr 2 or 3-digit Mobile Network Code in string format
      * @param alphal long alpha Operator Name String or Enhanced Operator Name String
diff --git a/telephony/java/android/telephony/CellInfo.java b/telephony/java/android/telephony/CellInfo.java
index 9232ed7..3aab3fc 100644
--- a/telephony/java/android/telephony/CellInfo.java
+++ b/telephony/java/android/telephony/CellInfo.java
@@ -19,6 +19,7 @@
 import android.annotation.IntDef;
 import android.os.Parcel;
 import android.os.Parcelable;
+
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
@@ -36,6 +37,8 @@
     protected static final int TYPE_LTE = 3;
     /** @hide */
     protected static final int TYPE_WCDMA = 4;
+    /** @hide */
+    protected static final int TYPE_TDCDMA = 5;
 
     // Type to distinguish where time stamp gets recorded.
 
@@ -260,6 +263,7 @@
                     case TYPE_CDMA: return CellInfoCdma.createFromParcelBody(in);
                     case TYPE_LTE: return CellInfoLte.createFromParcelBody(in);
                     case TYPE_WCDMA: return CellInfoWcdma.createFromParcelBody(in);
+                    case TYPE_TDCDMA: return CellInfoTdscdma.createFromParcelBody(in);
                     default: throw new RuntimeException("Bad CellInfo Parcel");
                 }
         }
diff --git a/telephony/java/android/telephony/CellInfoCdma.java b/telephony/java/android/telephony/CellInfoCdma.java
index 6f2f1f6..6403bc5 100644
--- a/telephony/java/android/telephony/CellInfoCdma.java
+++ b/telephony/java/android/telephony/CellInfoCdma.java
@@ -21,7 +21,7 @@
 import android.telephony.Rlog;
 
 /**
- * Immutable cell information from a point in time.
+ * A {@link CellInfo} representing a CDMA cell that provides identity and measurement info.
  */
 public final class CellInfoCdma extends CellInfo implements Parcelable {
 
diff --git a/telephony/java/android/telephony/CellInfoGsm.java b/telephony/java/android/telephony/CellInfoGsm.java
index 1bedddb..a3a9b31 100644
--- a/telephony/java/android/telephony/CellInfoGsm.java
+++ b/telephony/java/android/telephony/CellInfoGsm.java
@@ -21,7 +21,7 @@
 import android.telephony.Rlog;
 
 /**
- * Immutable cell information from a point in time.
+ * A {@link CellInfo} representing a GSM cell that provides identity and measurement info.
  */
 public final class CellInfoGsm extends CellInfo implements Parcelable {
 
diff --git a/telephony/java/android/telephony/CellInfoLte.java b/telephony/java/android/telephony/CellInfoLte.java
index 287c9f0..b892e89 100644
--- a/telephony/java/android/telephony/CellInfoLte.java
+++ b/telephony/java/android/telephony/CellInfoLte.java
@@ -21,7 +21,7 @@
 import android.telephony.Rlog;
 
 /**
- * Immutable cell information from a point in time.
+ * A {@link CellInfo} representing an LTE cell that provides identity and measurement info.
  */
 public final class CellInfoLte extends CellInfo implements Parcelable {
 
diff --git a/telephony/java/android/telephony/CellInfoTdscdma.java b/telephony/java/android/telephony/CellInfoTdscdma.java
new file mode 100644
index 0000000..7084c51
--- /dev/null
+++ b/telephony/java/android/telephony/CellInfoTdscdma.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2018 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.Objects;
+
+/**
+ * A {@link CellInfo} representing a TD-SCDMA cell that provides identity and measurement info.
+ *
+ * @hide
+ */
+public final class CellInfoTdscdma extends CellInfo implements Parcelable {
+
+    private static final String LOG_TAG = "CellInfoTdscdma";
+    private static final boolean DBG = false;
+
+    private CellIdentityTdscdma mCellIdentityTdscdma;
+    private CellSignalStrengthTdscdma mCellSignalStrengthTdscdma;
+
+    /** @hide */
+    public CellInfoTdscdma() {
+        super();
+        mCellIdentityTdscdma = new CellIdentityTdscdma();
+        mCellSignalStrengthTdscdma = new CellSignalStrengthTdscdma();
+    }
+
+    /** @hide */
+    public CellInfoTdscdma(CellInfoTdscdma ci) {
+        super(ci);
+        this.mCellIdentityTdscdma = ci.mCellIdentityTdscdma.copy();
+        this.mCellSignalStrengthTdscdma = ci.mCellSignalStrengthTdscdma.copy();
+    }
+
+    public CellIdentityTdscdma getCellIdentity() {
+        return mCellIdentityTdscdma;
+    }
+    /** @hide */
+    public void setCellIdentity(CellIdentityTdscdma cid) {
+        mCellIdentityTdscdma = cid;
+    }
+
+    public CellSignalStrengthTdscdma getCellSignalStrength() {
+        return mCellSignalStrengthTdscdma;
+    }
+    /** @hide */
+    public void setCellSignalStrength(CellSignalStrengthTdscdma css) {
+        mCellSignalStrengthTdscdma = css;
+    }
+
+    /**
+     * @return hash code
+     */
+    @Override
+    public int hashCode() {
+        return Objects.hash(super.hashCode(), mCellIdentityTdscdma, mCellSignalStrengthTdscdma);
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (!super.equals(other)) {
+            return false;
+        }
+        try {
+            CellInfoTdscdma o = (CellInfoTdscdma) other;
+            return mCellIdentityTdscdma.equals(o.mCellIdentityTdscdma)
+                    && mCellSignalStrengthTdscdma.equals(o.mCellSignalStrengthTdscdma);
+        } catch (ClassCastException e) {
+            return false;
+        }
+    }
+
+    @Override
+    public String toString() {
+        StringBuffer sb = new StringBuffer();
+
+        sb.append("CellInfoTdscdma:{");
+        sb.append(super.toString());
+        sb.append(" ").append(mCellIdentityTdscdma);
+        sb.append(" ").append(mCellSignalStrengthTdscdma);
+        sb.append("}");
+
+        return sb.toString();
+    }
+
+    /** Implement the Parcelable interface */
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    /** Implement the Parcelable interface */
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        super.writeToParcel(dest, flags, TYPE_TDCDMA);
+        mCellIdentityTdscdma.writeToParcel(dest, flags);
+        mCellSignalStrengthTdscdma.writeToParcel(dest, flags);
+    }
+
+    /**
+     * Construct a CellInfoTdscdma object from the given parcel
+     * where the token is already been processed.
+     */
+    private CellInfoTdscdma(Parcel in) {
+        super(in);
+        mCellIdentityTdscdma = CellIdentityTdscdma.CREATOR.createFromParcel(in);
+        mCellSignalStrengthTdscdma = CellSignalStrengthTdscdma.CREATOR.createFromParcel(in);
+    }
+
+    /** Implement the Parcelable interface */
+    public static final Creator<CellInfoTdscdma> CREATOR = new Creator<CellInfoTdscdma>() {
+        @Override
+        public CellInfoTdscdma createFromParcel(Parcel in) {
+            in.readInt(); // Skip past token, we know what it is
+            return createFromParcelBody(in);
+        }
+
+        @Override
+        public CellInfoTdscdma[] newArray(int size) {
+            return new CellInfoTdscdma[size];
+        }
+    };
+
+    /** @hide */
+    protected static CellInfoTdscdma createFromParcelBody(Parcel in) {
+        return new CellInfoTdscdma(in);
+    }
+
+    /**
+     * log
+     */
+    private static void log(String s) {
+        Rlog.w(LOG_TAG, s);
+    }
+}
diff --git a/telephony/java/android/telephony/CellInfoWcdma.java b/telephony/java/android/telephony/CellInfoWcdma.java
index 0615702..005f3d3 100644
--- a/telephony/java/android/telephony/CellInfoWcdma.java
+++ b/telephony/java/android/telephony/CellInfoWcdma.java
@@ -20,8 +20,10 @@
 import android.os.Parcelable;
 import android.telephony.Rlog;
 
+import java.util.Objects;
+
 /**
- * Immutable cell information from a point in time.
+ * A {@link CellInfo} representing a WCDMA cell that provides identity and measurement info.
  */
 public final class CellInfoWcdma extends CellInfo implements Parcelable {
 
@@ -66,7 +68,7 @@
      */
     @Override
     public int hashCode() {
-        return super.hashCode() + mCellIdentityWcdma.hashCode() + mCellSignalStrengthWcdma.hashCode();
+        return Objects.hash(super.hashCode(), mCellIdentityWcdma, mCellSignalStrengthWcdma);
     }
 
     @Override
diff --git a/telephony/java/android/telephony/CellSignalStrengthCdma.java b/telephony/java/android/telephony/CellSignalStrengthCdma.java
index 183f96d..aa6b207 100644
--- a/telephony/java/android/telephony/CellSignalStrengthCdma.java
+++ b/telephony/java/android/telephony/CellSignalStrengthCdma.java
@@ -104,7 +104,10 @@
     }
 
     /**
-     * Get signal level as an int from 0..4
+     * Retrieve an abstract level value for the overall signal strength.
+     *
+     * @return a single integer from 0 to 4 representing the general signal quality.
+     *     0 represents very poor signal strength while 4 represents a very strong signal strength.
      */
     @Override
     public int getLevel() {
diff --git a/telephony/java/android/telephony/CellSignalStrengthGsm.java b/telephony/java/android/telephony/CellSignalStrengthGsm.java
index 8687cd1..cff159b 100644
--- a/telephony/java/android/telephony/CellSignalStrengthGsm.java
+++ b/telephony/java/android/telephony/CellSignalStrengthGsm.java
@@ -82,7 +82,10 @@
     }
 
     /**
-     * Get signal level as an int from 0..4
+     * Retrieve an abstract level value for the overall signal strength.
+     *
+     * @return a single integer from 0 to 4 representing the general signal quality.
+     *     0 represents very poor signal strength while 4 represents a very strong signal strength.
      */
     @Override
     public int getLevel() {
diff --git a/telephony/java/android/telephony/CellSignalStrengthLte.java b/telephony/java/android/telephony/CellSignalStrengthLte.java
index 2b6928e..2f059f4 100644
--- a/telephony/java/android/telephony/CellSignalStrengthLte.java
+++ b/telephony/java/android/telephony/CellSignalStrengthLte.java
@@ -86,7 +86,10 @@
     }
 
     /**
-     * Get signal level as an int from 0..4
+     * Retrieve an abstract level value for the overall signal strength.
+     *
+     * @return a single integer from 0 to 4 representing the general signal quality.
+     *     0 represents very poor signal strength while 4 represents a very strong signal strength.
      */
     @Override
     public int getLevel() {
diff --git a/telephony/java/android/telephony/CellSignalStrengthTdscdma.java b/telephony/java/android/telephony/CellSignalStrengthTdscdma.java
new file mode 100644
index 0000000..41859a3
--- /dev/null
+++ b/telephony/java/android/telephony/CellSignalStrengthTdscdma.java
@@ -0,0 +1,228 @@
+/*
+ * Copyright (C) 2018 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.Objects;
+
+/**
+ * Tdscdma signal strength related information.
+ *
+ * @hide
+ */
+public final class CellSignalStrengthTdscdma extends CellSignalStrength implements Parcelable {
+
+    private static final String LOG_TAG = "CellSignalStrengthTdscdma";
+    private static final boolean DBG = false;
+
+    private static final int TDSCDMA_SIGNAL_STRENGTH_GREAT = 12;
+    private static final int TDSCDMA_SIGNAL_STRENGTH_GOOD = 8;
+    private static final int TDSCDMA_SIGNAL_STRENGTH_MODERATE = 5;
+
+    private int mSignalStrength; // in ASU; Valid values are (0-31, 99) as defined in TS 27.007 8.5
+                                 // or Integer.MAX_VALUE if unknown
+    private int mBitErrorRate; // bit error rate (0-7, 99) as defined in TS 27.007 8.5 or
+                               // Integer.MAX_VALUE if unknown
+    private int mRscp; // Pilot power (0-96, 255) as defined in TS 27.007 8.69 or Integer.MAX_VALUE
+                       // if unknown
+
+    /** @hide */
+    public CellSignalStrengthTdscdma() {
+        setDefaultValues();
+    }
+
+    /** @hide */
+    public CellSignalStrengthTdscdma(int ss, int ber, int rscp) {
+        mSignalStrength = ss;
+        mBitErrorRate = ber;
+        mRscp = rscp;
+    }
+
+    /** @hide */
+    public CellSignalStrengthTdscdma(CellSignalStrengthTdscdma s) {
+        copyFrom(s);
+    }
+
+    /** @hide */
+    protected void copyFrom(CellSignalStrengthTdscdma s) {
+        mSignalStrength = s.mSignalStrength;
+        mBitErrorRate = s.mBitErrorRate;
+        mRscp = s.mRscp;
+    }
+
+    /** @hide */
+    @Override
+    public CellSignalStrengthTdscdma copy() {
+        return new CellSignalStrengthTdscdma(this);
+    }
+
+    /** @hide */
+    @Override
+    public void setDefaultValues() {
+        mSignalStrength = Integer.MAX_VALUE;
+        mBitErrorRate = Integer.MAX_VALUE;
+        mRscp = Integer.MAX_VALUE;
+    }
+
+    /**
+     * Retrieve an abstract level value for the overall signal strength.
+     *
+     * @return a single integer from 0 to 4 representing the general signal quality.
+     *     0 represents very poor signal strength while 4 represents a very strong signal strength.
+     */
+    @Override
+    public int getLevel() {
+        int level;
+
+        // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5
+        // asu = 0 (-113dB or less) is very weak
+        // signal, its better to show 0 bars to the user in such cases.
+        // asu = 99 is a special case, where the signal strength is unknown.
+        int asu = mSignalStrength;
+        if (asu <= 2 || asu == 99) {
+            level = SIGNAL_STRENGTH_NONE_OR_UNKNOWN;
+        } else if (asu >= TDSCDMA_SIGNAL_STRENGTH_GREAT) {
+            level = SIGNAL_STRENGTH_GREAT;
+        } else if (asu >= TDSCDMA_SIGNAL_STRENGTH_GOOD) {
+            level = SIGNAL_STRENGTH_GOOD;
+        } else if (asu >= TDSCDMA_SIGNAL_STRENGTH_MODERATE) {
+            level = SIGNAL_STRENGTH_MODERATE;
+        } else {
+            level = SIGNAL_STRENGTH_POOR;
+        }
+        if (DBG) log("getLevel=" + level);
+        return level;
+    }
+
+    /**
+     * Get the signal strength as dBm
+     */
+    @Override
+    public int getDbm() {
+        int dBm;
+
+        int level = mSignalStrength;
+        int asu = (level == 99 ? Integer.MAX_VALUE : level);
+        if (asu != Integer.MAX_VALUE) {
+            dBm = -113 + (2 * asu);
+        } else {
+            dBm = Integer.MAX_VALUE;
+        }
+        if (DBG) log("getDbm=" + dBm);
+        return dBm;
+    }
+
+    /**
+     * Get the signal level as an asu value between 0..31, 99 is unknown
+     * Asu is calculated based on 3GPP RSRP. Refer to 3GPP 27.007 (Ver 10.3.0) Sec 8.69
+     */
+    @Override
+    public int getAsuLevel() {
+        // ASU ranges from 0 to 31 - TS 27.007 Sec 8.5
+        // asu = 0 (-113dB or less) is very weak
+        // signal, its better to show 0 bars to the user in such cases.
+        // asu = 99 is a special case, where the signal strength is unknown.
+        int level = mSignalStrength;
+        if (DBG) log("getAsuLevel=" + level);
+        return level;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mSignalStrength, mBitErrorRate);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        CellSignalStrengthTdscdma s;
+
+        try {
+            s = (CellSignalStrengthTdscdma) o;
+        } catch (ClassCastException ex) {
+            return false;
+        }
+
+        if (o == null) {
+            return false;
+        }
+
+        return mSignalStrength == s.mSignalStrength
+                && mBitErrorRate == s.mBitErrorRate
+                && mRscp == s.mRscp;
+    }
+
+    /**
+     * @return string representation.
+     */
+    @Override
+    public String toString() {
+        return "CellSignalStrengthTdscdma:"
+                + " ss=" + mSignalStrength
+                + " ber=" + mBitErrorRate
+                + " rscp=" + mRscp;
+    }
+
+    /** Implement the Parcelable interface */
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        if (DBG) log("writeToParcel(Parcel, int): " + toString());
+        dest.writeInt(mSignalStrength);
+        dest.writeInt(mBitErrorRate);
+        dest.writeInt(mRscp);
+    }
+
+    /**
+     * Construct a SignalStrength object from the given parcel
+     * where the token is already been processed.
+     */
+    private CellSignalStrengthTdscdma(Parcel in) {
+        mSignalStrength = in.readInt();
+        mBitErrorRate = in.readInt();
+        mRscp = in.readInt();
+        if (DBG) log("CellSignalStrengthTdscdma(Parcel): " + toString());
+    }
+
+    /** Implement the Parcelable interface */
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    /** Implement the Parcelable interface */
+    @SuppressWarnings("hiding")
+    public static final Parcelable.Creator<CellSignalStrengthTdscdma> CREATOR =
+            new Parcelable.Creator<CellSignalStrengthTdscdma>() {
+        @Override
+        public CellSignalStrengthTdscdma createFromParcel(Parcel in) {
+            return new CellSignalStrengthTdscdma(in);
+        }
+
+        @Override
+        public CellSignalStrengthTdscdma[] newArray(int size) {
+            return new CellSignalStrengthTdscdma[size];
+        }
+    };
+
+    /**
+     * log
+     */
+    private static void log(String s) {
+        Rlog.w(LOG_TAG, s);
+    }
+}
diff --git a/telephony/java/android/telephony/CellSignalStrengthWcdma.java b/telephony/java/android/telephony/CellSignalStrengthWcdma.java
index dd32a96..21cf0be 100644
--- a/telephony/java/android/telephony/CellSignalStrengthWcdma.java
+++ b/telephony/java/android/telephony/CellSignalStrengthWcdma.java
@@ -35,7 +35,13 @@
     private static final int WCDMA_SIGNAL_STRENGTH_MODERATE = 5;
 
     private int mSignalStrength; // in ASU; Valid values are (0-31, 99) as defined in TS 27.007 8.5
-    private int mBitErrorRate; // bit error rate (0-7, 99) as defined in TS 27.007 8.5
+                                 // or Integer.MAX_VALUE if unknown
+    private int mBitErrorRate; // bit error rate (0-7, 99) as defined in TS 27.007 8.5 or
+                               // Integer.MAX_VALUE if unknown
+    private int mRscp; // bit error rate (0-96, 255) as defined in TS 27.007 8.69 or
+                       // Integer.MAX_VALUE if unknown
+    private int mEcNo; // signal to noise radio (0-49, 255) as defined in TS 27.007 8.69 or
+                       // Integer.MAX_VALUE if unknown
 
     /** @hide */
     public CellSignalStrengthWcdma() {
@@ -43,9 +49,11 @@
     }
 
     /** @hide */
-    public CellSignalStrengthWcdma(int ss, int ber) {
+    public CellSignalStrengthWcdma(int ss, int ber, int rscp, int ecno) {
         mSignalStrength = ss;
         mBitErrorRate = ber;
+        mRscp = rscp;
+        mEcNo = ecno;
     }
 
     /** @hide */
@@ -57,6 +65,8 @@
     protected void copyFrom(CellSignalStrengthWcdma s) {
         mSignalStrength = s.mSignalStrength;
         mBitErrorRate = s.mBitErrorRate;
+        mRscp = s.mRscp;
+        mEcNo = s.mEcNo;
     }
 
     /** @hide */
@@ -70,10 +80,15 @@
     public void setDefaultValues() {
         mSignalStrength = Integer.MAX_VALUE;
         mBitErrorRate = Integer.MAX_VALUE;
+        mRscp = Integer.MAX_VALUE;
+        mEcNo = Integer.MAX_VALUE;
     }
 
     /**
-     * Get signal level as an int from 0..4
+     * Retrieve an abstract level value for the overall signal strength.
+     *
+     * @return a single integer from 0 to 4 representing the general signal quality.
+     *     0 represents very poor signal strength while 4 represents a very strong signal strength.
      */
     @Override
     public int getLevel() {
@@ -145,7 +160,10 @@
             return false;
         }
 
-        return mSignalStrength == s.mSignalStrength && mBitErrorRate == s.mBitErrorRate;
+        return mSignalStrength == s.mSignalStrength
+                && mBitErrorRate == s.mBitErrorRate
+                && mRscp == s.mRscp
+                && mEcNo == s.mEcNo;
     }
 
     /**
@@ -155,7 +173,9 @@
     public String toString() {
         return "CellSignalStrengthWcdma:"
                 + " ss=" + mSignalStrength
-                + " ber=" + mBitErrorRate;
+                + " ber=" + mBitErrorRate
+                + " rscp=" + mRscp
+                + " ecno=" + mEcNo;
     }
 
     /** Implement the Parcelable interface */
@@ -164,6 +184,8 @@
         if (DBG) log("writeToParcel(Parcel, int): " + toString());
         dest.writeInt(mSignalStrength);
         dest.writeInt(mBitErrorRate);
+        dest.writeInt(mRscp);
+        dest.writeInt(mEcNo);
     }
 
     /**
@@ -173,6 +195,8 @@
     private CellSignalStrengthWcdma(Parcel in) {
         mSignalStrength = in.readInt();
         mBitErrorRate = in.readInt();
+        mRscp = in.readInt();
+        mEcNo = in.readInt();
         if (DBG) log("CellSignalStrengthWcdma(Parcel): " + toString());
     }