diff --git a/telecomm/java/android/telecom/PhoneAccount.java b/telecomm/java/android/telecom/PhoneAccount.java
index 6bd6a2f6bc25e..052a481f1ab28 100644
--- a/telecomm/java/android/telecom/PhoneAccount.java
+++ b/telecomm/java/android/telecom/PhoneAccount.java
@@ -104,6 +104,15 @@ public class PhoneAccount implements Parcelable {
      */
     public static final int CAPABILITY_PLACE_EMERGENCY_CALLS = 0x10;
 
+    /**
+     * Flag indicating that this {@code PhoneAccount} is capable of being used by all users. This
+     * should only be used by system apps (and will be ignored for all other apps trying to use it).
+     * <p>
+     * See {@link #getCapabilities}
+     * @hide
+     */
+    public static final int CAPABILITY_MULTI_USER = 0x20;
+
     /**
      * URI scheme for telephone number URIs.
      */
@@ -193,6 +202,12 @@ public class PhoneAccount implements Parcelable {
             mSupportedUriSchemes.addAll(phoneAccount.getSupportedUriSchemes());
         }
 
+        /** @hide */
+        public Builder setAccountHandle(PhoneAccountHandle accountHandle) {
+            mAccountHandle = accountHandle;
+            return this;
+        }
+
         /**
          * Sets the address. See {@link PhoneAccount#getAddress}.
          *
diff --git a/telecomm/java/android/telecom/PhoneAccountHandle.java b/telecomm/java/android/telecom/PhoneAccountHandle.java
index 7bcf1472f9ee0..97af41afd31aa 100644
--- a/telecomm/java/android/telecom/PhoneAccountHandle.java
+++ b/telecomm/java/android/telecom/PhoneAccountHandle.java
@@ -20,6 +20,8 @@ import android.annotation.SystemApi;
 import android.content.ComponentName;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.Process;
+import android.os.UserHandle;
 
 import java.util.Objects;
 
@@ -38,14 +40,24 @@ import java.util.Objects;
  */
 @SystemApi
 public class PhoneAccountHandle implements Parcelable {
-    private ComponentName mComponentName;
-    private String mId;
+    private final ComponentName mComponentName;
+    private final String mId;
+    private final UserHandle mUserHandle;
 
     public PhoneAccountHandle(
             ComponentName componentName,
             String id) {
+        this(componentName, id, Process.myUserHandle());
+    }
+
+    /** @hide */
+    public PhoneAccountHandle(
+            ComponentName componentName,
+            String id,
+            UserHandle userHandle) {
         mComponentName = componentName;
         mId = id;
+        mUserHandle = userHandle;
     }
 
     /**
@@ -76,9 +88,17 @@ public class PhoneAccountHandle implements Parcelable {
         return mId;
     }
 
+    /**
+     * @return the {@link UserHandle} to use when connecting to this PhoneAccount.
+     * @hide
+     */
+    public UserHandle getUserHandle() {
+        return mUserHandle;
+    }
+
     @Override
     public int hashCode() {
-        return Objects.hashCode(mComponentName) + Objects.hashCode(mId);
+        return Objects.hash(mComponentName, mId, mUserHandle);
     }
 
     @Override
@@ -88,6 +108,8 @@ public class PhoneAccountHandle implements Parcelable {
         return new StringBuilder().append(mComponentName)
                     .append(", ")
                     .append(Log.pii(mId))
+                    .append(", ")
+                    .append(mUserHandle)
                     .toString();
     }
 
@@ -97,7 +119,8 @@ public class PhoneAccountHandle implements Parcelable {
                 other instanceof PhoneAccountHandle &&
                 Objects.equals(((PhoneAccountHandle) other).getComponentName(),
                         getComponentName()) &&
-                Objects.equals(((PhoneAccountHandle) other).getId(), getId());
+                Objects.equals(((PhoneAccountHandle) other).getId(), getId()) &&
+                Objects.equals(((PhoneAccountHandle) other).getUserHandle(), getUserHandle());
     }
 
     //
@@ -111,8 +134,9 @@ public class PhoneAccountHandle implements Parcelable {
 
     @Override
     public void writeToParcel(Parcel out, int flags) {
-        out.writeParcelable(mComponentName, flags);
+        mComponentName.writeToParcel(out, flags);
         out.writeString(mId);
+        mUserHandle.writeToParcel(out, flags);
     }
 
     public static final Creator<PhoneAccountHandle> CREATOR = new Creator<PhoneAccountHandle>() {
@@ -128,7 +152,8 @@ public class PhoneAccountHandle implements Parcelable {
     };
 
     private PhoneAccountHandle(Parcel in) {
-        mComponentName = in.readParcelable(getClass().getClassLoader());
-        mId = in.readString();
+        this(ComponentName.CREATOR.createFromParcel(in),
+                in.readString(),
+                UserHandle.CREATOR.createFromParcel(in));
     }
 }