diff --git a/.github/actions/start-emulator/action.yml b/.github/actions/start-emulator/action.yml
new file mode 100644
index 000000000..fb71e4321
--- /dev/null
+++ b/.github/actions/start-emulator/action.yml
@@ -0,0 +1,89 @@
+# Copyright 2026 The Ground Authors.
+#
+# 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
+#
+#     https://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.
+name: Start Firebase emulator for Android tests
+
+inputs:
+  platform-repository:
+    description: "ground-platform repository under test"
+    default: google/ground-platform
+
+runs:
+  using: "composite"
+  steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        repository: ${{ inputs.platform-repository }}
+        path: ground-platform
+
+    - name: Load cached Firebase emulator
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/firebase/emulators
+        key: ${{ runner.os }}-firebase-emulators-${{ github.sha }}
+        restore-keys: |
+          ${{ runner.os }}-firebase-emulators-
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: "20"
+
+    - name: Load cached Node modules
+      id: cache-npm
+      uses: actions/cache@v4
+      env:
+        cache-name: cache-node-modules
+      with:
+        # npm cache files are stored in `~/.npm` on Linux/macOS
+        path: ~/.npm
+        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+        restore-keys: |
+          ${{ runner.os }}-build-${{ env.cache-name }}-
+          ${{ runner.os }}-build-
+          ${{ runner.os }}-
+
+    - name: Install nx-linux-x64-gnu
+      working-directory: ground-platform
+      shell: bash
+      run: npm install @nx/nx-linux-x64-gnu
+
+    - name: Install dependencies
+      working-directory: ground-platform
+      shell: bash
+      run: npm install
+
+    - name: Build project and local deps
+      working-directory: ground-platform
+      shell: bash
+      run: npx nx build
+
+    - name: Start Firebase emulator with Android test data
+      working-directory: ground-platform
+      shell: bash
+      run: |
+        npx nx start-android-test-data > firebase-emulator.log 2>&1 &
+    
+        for i in {1..30}; do
+          if curl -s http://localhost:4000 > /dev/null 2>&1; then
+            echo "Firebase emulator started!"
+            exit 0
+          fi
+          echo "Waiting for Firebase emulator to start... ($i/30)"
+          sleep 5
+        done
+    
+        echo "Firebase Emulator failed to start"
+        cat firebase-emulator.log
+        exit 1
diff --git a/data/test-android/auth_export/accounts.json b/data/test-android/auth_export/accounts.json
new file mode 100644
index 000000000..135e08db6
--- /dev/null
+++ b/data/test-android/auth_export/accounts.json
@@ -0,0 +1 @@
+{"kind":"identitytoolkit#DownloadAccountResponse","users":[]}
\ No newline at end of file
diff --git a/data/test-android/auth_export/config.json b/data/test-android/auth_export/config.json
new file mode 100644
index 000000000..6f240f7e9
--- /dev/null
+++ b/data/test-android/auth_export/config.json
@@ -0,0 +1 @@
+{"signIn":{"allowDuplicateEmails":false},"emailPrivacyConfig":{"enableImprovedEmailPrivacy":false}}
\ No newline at end of file
diff --git a/data/test-android/firebase-export-metadata.json b/data/test-android/firebase-export-metadata.json
new file mode 100644
index 000000000..947edb716
--- /dev/null
+++ b/data/test-android/firebase-export-metadata.json
@@ -0,0 +1,12 @@
+{
+  "version": "14.27.0",
+  "firestore": {
+    "version": "1.19.8",
+    "path": "firestore_export",
+    "metadata_file": "firestore_export/firestore_export.overall_export_metadata"
+  },
+  "auth": {
+    "version": "14.27.0",
+    "path": "auth_export"
+  }
+}
\ No newline at end of file
diff --git a/data/test-android/firestore_export/all_namespaces/all_kinds/all_namespaces_all_kinds.export_metadata b/data/test-android/firestore_export/all_namespaces/all_kinds/all_namespaces_all_kinds.export_metadata
new file mode 100644
index 000000000..a09ff55ea
Binary files /dev/null and b/data/test-android/firestore_export/all_namespaces/all_kinds/all_namespaces_all_kinds.export_metadata differ
diff --git a/data/test-android/firestore_export/all_namespaces/all_kinds/output-0 b/data/test-android/firestore_export/all_namespaces/all_kinds/output-0
new file mode 100644
index 000000000..799052f4a
Binary files /dev/null and b/data/test-android/firestore_export/all_namespaces/all_kinds/output-0 differ
diff --git a/data/test-android/firestore_export/firestore_export.overall_export_metadata b/data/test-android/firestore_export/firestore_export.overall_export_metadata
new file mode 100644
index 000000000..958d2b23e
Binary files /dev/null and b/data/test-android/firestore_export/firestore_export.overall_export_metadata differ
diff --git a/firebase.local.json b/firebase.local.json
index ad6da9a8f..d210970a4 100644
--- a/firebase.local.json
+++ b/firebase.local.json
@@ -13,6 +13,9 @@
     ]
   },
   "emulators": {
+    "auth": {
+      "port": 9099
+    },
     "functions": {
       "port": 5001
     },
diff --git a/package.json b/package.json
index bc89e6fd3..ea1068cc1 100644
--- a/package.json
+++ b/package.json
@@ -41,6 +41,18 @@
           "build"
         ]
       },
+      "start-android-test-data": {
+        "executor": "nx:run-commands",
+        "options": {
+          "commands": [
+            "firebase experiments:enable webframeworks",
+            "firebase emulators:start --project demo-local --config firebase.local.json --import data/test-android"
+          ]
+        },
+        "dependsOn": [
+          "build"
+        ]
+      },
       "deploy": {
         "executor": "nx:run-commands",
         "configurations": {
@@ -110,4 +122,4 @@
   "overrides": {
     "eslint-plugin-n": "^17.0.0"
   }
-}
+}
\ No newline at end of file