diff --git a/remoteauth/service/Android.bp b/remoteauth/service/Android.bp
index 3486d8c..c7e5419 100644
--- a/remoteauth/service/Android.bp
+++ b/remoteauth/service/Android.bp
@@ -47,6 +47,7 @@
         "modules-utils-preconditions",
         "modules-utils-backgroundthread",
         "presence-lite-protos",
+        "uwb_androidx_backend",
     ],
     sdk_version: "system_server_current",
     // This is included in service-connectivity which is 30+
diff --git a/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingCapabilities.java b/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingCapabilities.java
index 2b5efff..36aa585 100644
--- a/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingCapabilities.java
+++ b/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingCapabilities.java
@@ -15,6 +15,9 @@
  */
 package com.android.server.remoteauth.ranging;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+
 import androidx.annotation.IntDef;
 
 import com.google.common.collect.ImmutableList;
@@ -43,6 +46,8 @@
     public static final int RANGING_METHOD_UWB = 0x1;
 
     private final ImmutableList<Integer> mSupportedRangingMethods;
+    private final androidx.core.uwb.backend.impl.internal.RangingCapabilities
+            mUwbRangingCapabilities;
 
     /**
      * Gets the list of supported ranging methods of the device.
@@ -53,13 +58,28 @@
         return mSupportedRangingMethods;
     }
 
-    private RangingCapabilities(List<Integer> supportedRangingMethods) {
+    /**
+     * Gets the UWB ranging capabilities of the device.
+     *
+     * @return UWB ranging capabilities, null if UWB is not a supported {@link RangingMethod} in
+     *     {@link #getSupportedRangingMethods}.
+     */
+    @Nullable
+    public androidx.core.uwb.backend.impl.internal.RangingCapabilities getUwbRangingCapabilities() {
+        return mUwbRangingCapabilities;
+    }
+
+    private RangingCapabilities(
+            List<Integer> supportedRangingMethods,
+            androidx.core.uwb.backend.impl.internal.RangingCapabilities uwbRangingCapabilities) {
         mSupportedRangingMethods = ImmutableList.copyOf(supportedRangingMethods);
+        mUwbRangingCapabilities = uwbRangingCapabilities;
     }
 
     /** Builder class for {@link RangingCapabilities}. */
     public static final class Builder {
         private List<Integer> mSupportedRangingMethods = new ArrayList<>();
+        private androidx.core.uwb.backend.impl.internal.RangingCapabilities mUwbRangingCapabilities;
 
         /** Adds a supported {@link RangingMethod} */
         public Builder addSupportedRangingMethods(@RangingMethod int rangingMethod) {
@@ -67,9 +87,18 @@
             return this;
         }
 
+        /** Sets the uwb ranging capabilities. */
+        public Builder setUwbRangingCapabilities(
+                @NonNull
+                        androidx.core.uwb.backend.impl.internal.RangingCapabilities
+                                uwbRangingCapabilities) {
+            mUwbRangingCapabilities = uwbRangingCapabilities;
+            return this;
+        }
+
         /** Builds {@link RangingCapabilities}. */
         public RangingCapabilities build() {
-            return new RangingCapabilities(mSupportedRangingMethods);
+            return new RangingCapabilities(mSupportedRangingMethods, mUwbRangingCapabilities);
         }
     }
 }
diff --git a/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingManager.java b/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingManager.java
index 989b5ed..5a41aac 100644
--- a/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingManager.java
+++ b/remoteauth/service/java/com/android/server/remoteauth/ranging/RangingManager.java
@@ -15,7 +15,18 @@
  */
 package com.android.server.remoteauth.ranging;
 
+import static android.content.pm.PackageManager.FEATURE_UWB;
+
+import static com.android.server.remoteauth.ranging.RangingCapabilities.RANGING_METHOD_UWB;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.content.Context;
+import android.os.Build;
+import android.util.Log;
+
+import androidx.core.uwb.backend.impl.internal.UwbFeatureFlags;
+import androidx.core.uwb.backend.impl.internal.UwbServiceImpl;
 
 /**
  * Manages the creation of generic device to device ranging session and obtaining device's ranging
@@ -25,16 +36,46 @@
  * outside of this class.
  */
 public class RangingManager {
+    private static final String TAG = "RangingManager";
 
-    public RangingManager(Context context) {}
+    private Context mContext;
+    @NonNull private RangingCapabilities mCachedRangingCapabilities;
+    @NonNull private UwbServiceImpl mUwbServiceImpl;
+
+    public RangingManager(@NonNull Context context) {
+        mContext = context;
+        if (mContext.getPackageManager().hasSystemFeature(FEATURE_UWB)) {
+            initiateUwb();
+        }
+    }
+
+    /**
+     * Shutdown and stop all listeners and tasks. After shutdown, RangingManager shall not be used
+     * anymore.
+     */
+    public void shutdown() {
+        if (mUwbServiceImpl != null) {
+            mUwbServiceImpl.shutdown();
+        }
+        Log.i(TAG, "shutdown");
+    }
 
     /**
      * Gets the {@link RangingCapabilities} of this device.
      *
      * @return RangingCapabilities.
      */
+    @NonNull
     public RangingCapabilities getRangingCapabilities() {
-        return null;
+        if (mCachedRangingCapabilities == null) {
+            RangingCapabilities.Builder builder = new RangingCapabilities.Builder();
+            if (mUwbServiceImpl != null) {
+                builder.addSupportedRangingMethods(RANGING_METHOD_UWB);
+                builder.setUwbRangingCapabilities(mUwbServiceImpl.getRangingCapabilities());
+            }
+            mCachedRangingCapabilities = builder.build();
+        }
+        return mCachedRangingCapabilities;
     }
 
     /**
@@ -42,9 +83,23 @@
      * provided based on the rangingCapabilities of the device.
      *
      * @param sessionParameters parameters used to setup the session.
-     * @return the created RangingSession.
+     * @return the created RangingSession. Null if session creation failed.
      */
-    public RangingSession createSession(SessionParameters sessionParameters) {
+    @Nullable
+    public RangingSession createSession(@NonNull SessionParameters sessionParameters) {
         return null;
     }
+
+    /** Initiation required for ranging with UWB. */
+    private void initiateUwb() {
+        UwbFeatureFlags uwbFeatureFlags =
+                new UwbFeatureFlags.Builder()
+                        .setSkipRangingCapabilitiesCheck(
+                                Build.VERSION.SDK_INT <= Build.VERSION_CODES.S_V2)
+                        .setReversedByteOrderFiraParams(
+                                Build.VERSION.SDK_INT <= Build.VERSION_CODES.TIRAMISU)
+                        .build();
+        mUwbServiceImpl = new UwbServiceImpl(mContext, uwbFeatureFlags);
+        Log.i(TAG, "RangingManager initiateUwb complete");
+    }
 }
diff --git a/remoteauth/service/java/com/android/server/remoteauth/ranging/SessionInfo.java b/remoteauth/service/java/com/android/server/remoteauth/ranging/SessionInfo.java
index 5e4fc48..0ec640c 100644
--- a/remoteauth/service/java/com/android/server/remoteauth/ranging/SessionInfo.java
+++ b/remoteauth/service/java/com/android/server/remoteauth/ranging/SessionInfo.java
@@ -41,6 +41,16 @@
         mRangingMethod = rangingMethod;
     }
 
+    @Override
+    public String toString() {
+        return "SessionInfo { "
+                + "DeviceId = "
+                + mDeviceId
+                + "RangingMethod = "
+                + mRangingMethod
+                + " }";
+    }
+
     /** Builder class for {@link SessionInfo}. */
     public static final class Builder {
         private String mDeviceId = "";