--- a/mobile/android/base/fxa/activities/FxAccountCreateAccountActivity.java
+++ b/mobile/android/base/fxa/activities/FxAccountCreateAccountActivity.java
@@ -9,40 +9,42 @@ import java.util.concurrent.Executors;
 
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.background.common.log.Logger;
 import org.mozilla.gecko.background.fxa.FxAccountClient10.RequestDelegate;
 import org.mozilla.gecko.background.fxa.FxAccountClient20;
 import org.mozilla.gecko.fxa.FxAccountConstants;
 import org.mozilla.gecko.fxa.activities.FxAccountSetupTask.FxAccountSignUpTask;
 import org.mozilla.gecko.fxa.authenticator.AndroidFxAccount;
-import org.mozilla.gecko.fxa.authenticator.FxAccountAuthenticator;
 import org.mozilla.gecko.sync.HTTPFailureException;
 import org.mozilla.gecko.sync.net.SyncStorageResponse;
 
 import android.accounts.Account;
+import android.accounts.AccountManager;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.DialogInterface;
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
-import android.widget.Toast;
 import ch.boye.httpclientandroidlib.HttpResponse;
 
 /**
  * Activity which displays create account screen to the user.
  */
 public class FxAccountCreateAccountActivity extends FxAccountAbstractSetupActivity {
   protected static final String LOG_TAG = FxAccountCreateAccountActivity.class.getSimpleName();
 
+  private static final int CHILD_REQUEST_CODE = 2;
+
   protected EditText yearEdit;
 
   /**
    * {@inheritDoc}
    */
   @Override
   public void onCreate(Bundle icicle) {
     Logger.debug(LOG_TAG, "onCreate(" + icicle + ")");
@@ -60,29 +62,51 @@ public class FxAccountCreateAccountActiv
     button = (Button) ensureFindViewById(null, R.id.create_account_button, "create account button");
 
     createCreateAccountButton();
     createYearEdit();
     addListeners();
     updateButtonState();
     createShowPasswordButton();
 
-    launchActivityOnClick(ensureFindViewById(null, R.id.sign_in_instead_link, "sign in instead link"), FxAccountSignInActivity.class);
+    View signInInsteadLink = ensureFindViewById(null, R.id.sign_in_instead_link, "sign in instead link");
+    signInInsteadLink.setOnClickListener(new OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        Intent intent = new Intent(FxAccountCreateAccountActivity.this, FxAccountSignInActivity.class);
+        intent.putExtra("email", emailEdit.getText().toString());
+        intent.putExtra("password", passwordEdit.getText().toString());
+        // Per http://stackoverflow.com/a/8992365, this triggers a known bug with
+        // the soft keyboard not being shown for the started activity. Why, Android, why?
+        intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
+        startActivityForResult(intent, CHILD_REQUEST_CODE);
+      }
+    });
+
+    // Only set email/password in onCreate; we don't want to overwrite edited values onResume.
+    if (getIntent() != null && getIntent().getExtras() != null) {
+      Bundle bundle = getIntent().getExtras();
+      emailEdit.setText(bundle.getString("email"));
+      passwordEdit.setText(bundle.getString("password"));
+    }
   }
 
   /**
-   * {@inheritDoc}
+   * We might have switched to the SignIn activity; if that activity
+   * succeeds, feed its result back to the authenticator.
    */
   @Override
-  public void onResume() {
-    super.onResume();
-    if (FxAccountAuthenticator.getFirefoxAccounts(this).length > 0) {
-      redirectToActivity(FxAccountStatusActivity.class);
+  public void onActivityResult(int requestCode, int resultCode, Intent data) {
+    Logger.debug(LOG_TAG, "onActivityResult: " + requestCode);
+    if (requestCode != CHILD_REQUEST_CODE || resultCode != RESULT_OK) {
+      super.onActivityResult(requestCode, resultCode, data);
       return;
     }
+    this.setResult(resultCode, data);
+    this.finish();
   }
 
   protected void createYearEdit() {
     yearEdit.setOnClickListener(new OnClickListener() {
       @Override
       public void onClick(View v) {
         final String[] years = new String[20];
         for (int i = 0; i < years.length; i++) {
@@ -146,18 +170,23 @@ public class FxAccountCreateAccountActiv
         return;
       }
 
       // For great debugging.
       if (FxAccountConstants.LOG_PERSONAL_INFORMATION) {
         new AndroidFxAccount(activity, account).dump();
       }
 
-      Toast.makeText(getApplicationContext(), "Got success creating account.", Toast.LENGTH_LONG).show();
-      redirectToActivity(FxAccountStatusActivity.class);
+      // The GetStarted activity has called us and needs to return a result to the authenticator.
+      final Intent intent = new Intent();
+      intent.putExtra(AccountManager.KEY_ACCOUNT_NAME, email);
+      intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE, FxAccountConstants.ACCOUNT_TYPE);
+      // intent.putExtra(AccountManager.KEY_AUTHTOKEN, accountType);
+      setResult(RESULT_OK, intent);
+      finish();
     }
   }
 
   public void createAccount(String email, String password) {
     String serverURI = FxAccountConstants.DEFAULT_IDP_ENDPOINT;
     RequestDelegate<String> delegate = new CreateAccountDelegate(email, password, serverURI);
     Executor executor = Executors.newSingleThreadExecutor();
     FxAccountClient20 client = new FxAccountClient20(serverURI, executor);

--- a/mobile/android/base/fxa/activities/FxAccountGetStartedActivity.java
+++ b/mobile/android/base/fxa/activities/FxAccountGetStartedActivity.java
@@ -1,32 +1,83 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 package org.mozilla.gecko.fxa.activities;
 
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.background.common.log.Logger;
+import org.mozilla.gecko.fxa.FxAccountConstants;
+import org.mozilla.gecko.fxa.authenticator.FxAccountAuthenticator;
 
+import android.accounts.AccountAuthenticatorActivity;
+import android.content.Intent;
 import android.os.Bundle;
+import android.view.View;
+import android.view.View.OnClickListener;
 
 /**
  * Activity which displays sign up/sign in screen to the user.
  */
-public class FxAccountGetStartedActivity extends FxAccountAbstractActivity {
+public class FxAccountGetStartedActivity extends AccountAuthenticatorActivity {
   protected static final String LOG_TAG = FxAccountGetStartedActivity.class.getSimpleName();
 
+  private static final int CHILD_REQUEST_CODE = 1;
+
   /**
    * {@inheritDoc}
    */
   @Override
   public void onCreate(Bundle icicle) {
+    Logger.setThreadLogTag(FxAccountConstants.GLOBAL_LOG_TAG);
     Logger.debug(LOG_TAG, "onCreate(" + icicle + ")");
 
     super.onCreate(icicle);
     setContentView(R.layout.fxaccount_get_started);
 
-    linkifyTextViews(null, new int[] { R.id.old_firefox });
+    // linkifyTextViews(null, new int[] { R.id.old_firefox });
+
+    View button = findViewById(R.id.get_started_button);
+    button.setOnClickListener(new OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        Intent intent = new Intent(FxAccountGetStartedActivity.this, FxAccountCreateAccountActivity.class);
+        // Per http://stackoverflow.com/a/8992365, this triggers a known bug with
+        // the soft keyboard not being shown for the started activity. Why, Android, why?
+        intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
+        startActivityForResult(intent, CHILD_REQUEST_CODE);
+      }
+    });
+  }
 
-    launchActivityOnClick(ensureFindViewById(null, R.id.get_started_button, "get started button"), FxAccountCreateAccountActivity.class);
+  public void onResume() {
+    super.onResume();
+    if (FxAccountAuthenticator.getFirefoxAccounts(this).length > 0) {
+      this.setAccountAuthenticatorResult(null);
+      setResult(RESULT_CANCELED);
+      Intent intent = new Intent(this, FxAccountStatusActivity.class);
+      // Per http://stackoverflow.com/a/8992365, this triggers a known bug with
+      // the soft keyboard not being shown for the started activity. Why, Android, why?
+      intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
+      startActivity(intent);
+      finish();
+      return;
+    }
+  }
+
+  /**
+   * We started the CreateAccount activity for a result; this returns it to the
+   * authenticator.
+   */
+  @Override
+  public void onActivityResult(int requestCode, int resultCode, Intent data) {
+    Logger.debug(LOG_TAG, "onActivityResult: " + requestCode);
+    if (requestCode != CHILD_REQUEST_CODE) {
+      super.onActivityResult(requestCode, resultCode, data);
+      return;
+    }
+    if (data != null) {
+      this.setAccountAuthenticatorResult(data.getExtras());
+    }
+    this.setResult(requestCode, data);
   }
 }

--- a/mobile/android/base/fxa/activities/FxAccountSignInActivity.java
+++ b/mobile/android/base/fxa/activities/FxAccountSignInActivity.java
@@ -10,37 +10,39 @@ import java.util.concurrent.Executors;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.background.common.log.Logger;
 import org.mozilla.gecko.background.fxa.FxAccountClient10.RequestDelegate;
 import org.mozilla.gecko.background.fxa.FxAccountClient20;
 import org.mozilla.gecko.background.fxa.FxAccountClient20.LoginResponse;
 import org.mozilla.gecko.fxa.FxAccountConstants;
 import org.mozilla.gecko.fxa.activities.FxAccountSetupTask.FxAccountSignInTask;
 import org.mozilla.gecko.fxa.authenticator.AndroidFxAccount;
-import org.mozilla.gecko.fxa.authenticator.FxAccountAuthenticator;
 import org.mozilla.gecko.sync.HTTPFailureException;
 import org.mozilla.gecko.sync.net.SyncStorageResponse;
 
 import android.accounts.Account;
+import android.accounts.AccountManager;
 import android.app.Activity;
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
-import android.widget.Toast;
 import ch.boye.httpclientandroidlib.HttpResponse;
 
 /**
  * Activity which displays sign in screen to the user.
  */
 public class FxAccountSignInActivity extends FxAccountAbstractSetupActivity {
   protected static final String LOG_TAG = FxAccountSignInActivity.class.getSimpleName();
 
+  private static final int CHILD_REQUEST_CODE = 3;
+
   /**
    * {@inheritDoc}
    */
   @Override
   public void onCreate(Bundle icicle) {
     Logger.debug(LOG_TAG, "onCreate(" + icicle + ")");
 
     super.onCreate(icicle);
@@ -53,31 +55,54 @@ public class FxAccountSignInActivity ext
     button = (Button) ensureFindViewById(null, R.id.sign_in_button, "sign in button");
 
     minimumPasswordLength = 1; // Minimal restriction on passwords entered to sign in.
     createSignInButton();
     addListeners();
     updateButtonState();
     createShowPasswordButton();
 
-    this.launchActivityOnClick(ensureFindViewById(null, R.id.create_account_link, "create account instead link"), FxAccountCreateAccountActivity.class);
+    View signInInsteadLink = ensureFindViewById(null, R.id.create_account_link, "create account instead link");
+    signInInsteadLink.setOnClickListener(new OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        Intent intent = new Intent(FxAccountSignInActivity.this, FxAccountCreateAccountActivity.class);
+        intent.putExtra("email", emailEdit.getText().toString());
+        intent.putExtra("password", passwordEdit.getText().toString());
+        // Per http://stackoverflow.com/a/8992365, this triggers a known bug with
+        // the soft keyboard not being shown for the started activity. Why, Android, why?
+        intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
+        startActivityForResult(intent, CHILD_REQUEST_CODE);
+      }
+    });
+
+    // Only set email/password in onCreate; we don't want to overwrite edited values onResume.
+    if (getIntent() != null && getIntent().getExtras() != null) {
+      Bundle bundle = getIntent().getExtras();
+      emailEdit.setText(bundle.getString("email"));
+      passwordEdit.setText(bundle.getString("password"));
+    }
+
     // Not yet implemented.
-    this.launchActivityOnClick(ensureFindViewById(null, R.id.forgot_password_link, "forgot password link"), null);
+    // this.launchActivityOnClick(ensureFindViewById(null, R.id.forgot_password_link, "forgot password link"), null);
   }
 
   /**
-   * {@inheritDoc}
+   * We might have switched to the CreateAccount activity; if that activity
+   * succeeds, feed its result back to the authenticator.
    */
   @Override
-  public void onResume() {
-    super.onResume();
-    if (FxAccountAuthenticator.getFirefoxAccounts(this).length > 0) {
-      redirectToActivity(FxAccountStatusActivity.class);
+  public void onActivityResult(int requestCode, int resultCode, Intent data) {
+    Logger.debug(LOG_TAG, "onActivityResult: " + requestCode);
+    if (requestCode != CHILD_REQUEST_CODE || resultCode != RESULT_OK) {
+      super.onActivityResult(requestCode, resultCode, data);
       return;
     }
+    this.setResult(resultCode, data);
+    this.finish();
   }
 
   protected class SignInDelegate implements RequestDelegate<LoginResponse> {
     public final String email;
     public final String password;
     public final String serverURI;
 
     public SignInDelegate(String email, String password, String serverURI) {
@@ -114,18 +139,23 @@ public class FxAccountSignInActivity ext
         return;
       }
 
       // For great debugging.
       if (FxAccountConstants.LOG_PERSONAL_INFORMATION) {
         new AndroidFxAccount(activity, account).dump();
       }
 
-      Toast.makeText(getApplicationContext(), "Got success creating account.", Toast.LENGTH_LONG).show();
-      redirectToActivity(FxAccountStatusActivity.class);
+      // The GetStarted activity has called us and needs to return a result to the authenticator.
+      final Intent intent = new Intent();
+      intent.putExtra(AccountManager.KEY_ACCOUNT_NAME, email);
+      intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE, FxAccountConstants.ACCOUNT_TYPE);
+      // intent.putExtra(AccountManager.KEY_AUTHTOKEN, accountType);
+      setResult(RESULT_OK, intent);
+      finish();
     }
   }
 
   public void signIn(String email, String password) {
     String serverURI = FxAccountConstants.DEFAULT_IDP_ENDPOINT;
     RequestDelegate<LoginResponse> delegate = new SignInDelegate(email, password, serverURI);
     Executor executor = Executors.newSingleThreadExecutor();
     FxAccountClient20 client = new FxAccountClient20(serverURI, executor);

--- a/mobile/android/base/fxa/activities/FxAccountStatusActivity.java
+++ b/mobile/android/base/fxa/activities/FxAccountStatusActivity.java
@@ -1,16 +1,17 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 package org.mozilla.gecko.fxa.activities;
 
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.background.common.log.Logger;
+import org.mozilla.gecko.fxa.FxAccountConstants;
 import org.mozilla.gecko.fxa.authenticator.AndroidFxAccount;
 import org.mozilla.gecko.fxa.authenticator.FxAccountAuthenticator;
 
 import android.accounts.Account;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.TextView;
 
@@ -24,16 +25,17 @@ public class FxAccountStatusActivity ext
   protected View connectionStatusSignInView;
   protected View connectionStatusSyncingView;
 
   /**
    * {@inheritDoc}
    */
   @Override
   public void onCreate(Bundle icicle) {
+    Logger.setThreadLogTag(FxAccountConstants.GLOBAL_LOG_TAG);
     Logger.debug(LOG_TAG, "onCreate(" + icicle + ")");
 
     super.onCreate(icicle);
     setContentView(R.layout.fxaccount_status);
 
     connectionStatusUnverifiedView = ensureFindViewById(null, R.id.unverified_view, "unverified view");
     connectionStatusSignInView = ensureFindViewById(null, R.id.sign_in_view, "sign in view");
     connectionStatusSyncingView = ensureFindViewById(null, R.id.syncing_view, "syncing view");

--- a/mobile/android/base/fxa/activities/FxAccountUpdateCredentialsActivity.java
+++ b/mobile/android/base/fxa/activities/FxAccountUpdateCredentialsActivity.java
@@ -61,17 +61,17 @@ public class FxAccountUpdateCredentialsA
     createButton();
     addListeners();
     updateButtonState();
     createShowPasswordButton();
 
     emailEdit.setEnabled(false);
 
     // Not yet implemented.
-    this.launchActivityOnClick(ensureFindViewById(null, R.id.forgot_password_link, "forgot password link"), null);
+    // this.launchActivityOnClick(ensureFindViewById(null, R.id.forgot_password_link, "forgot password link"), null);
   }
 
   @Override
   public void onResume() {
     super.onResume();
     Account accounts[] = FxAccountAuthenticator.getFirefoxAccounts(this);
     if (accounts.length < 1) {
       redirectToActivity(FxAccountGetStartedActivity.class);