diff --git a/tests/cts/multidevices/Android.bp b/tests/cts/multidevices/Android.bp
new file mode 100644
index 0000000..5ac4229
--- /dev/null
+++ b/tests/cts/multidevices/Android.bp
@@ -0,0 +1,42 @@
+// Copyright (C) 2024 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 {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+python_test_host {
+    name: "CtsConnectivityMultiDevicesTestCases",
+    main: "connectivity_multi_devices_test.py",
+    srcs: ["connectivity_multi_devices_test.py"],
+    libs: [
+        "mobly",
+    ],
+    test_suites: [
+        "cts",
+        "general-tests",
+    ],
+    test_options: {
+        unit_test: false,
+    },
+    data: [
+        // Package the snippet with the mobly test
+        ":connectivity_multi_devices_snippet",
+    ],
+    version: {
+        py3: {
+            embedded_launcher: true,
+        },
+    },
+}
diff --git a/tests/cts/multidevices/AndroidTest.xml b/tests/cts/multidevices/AndroidTest.xml
new file mode 100644
index 0000000..5312b4d
--- /dev/null
+++ b/tests/cts/multidevices/AndroidTest.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 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.
+-->
+<configuration description="Config for CTS Connectivity multi devices test cases">
+    <option name="test-suite-tag" value="cts" />
+    <option name="config-descriptor:metadata" key="component" value="networking" />
+    <option name="config-descriptor:metadata" key="token" value="SIM_CARD" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+
+    <device name="device1">
+        <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+            <option name="test-file-name" value="connectivity_multi_devices_snippet.apk" />
+        </target_preparer>
+        <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer">
+        </target_preparer>
+    </device>
+    <device name="device2">
+        <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
+            <option name="test-file-name" value="connectivity_multi_devices_snippet.apk" />
+        </target_preparer>
+        <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer">
+        </target_preparer>
+    </device>
+
+    <test class="com.android.tradefed.testtype.mobly.MoblyBinaryHostTest">
+      <!-- The mobly-par-file-name should match the module name -->
+      <option name="mobly-par-file-name" value="CtsConnectivityMultiDevicesTestCases" />
+      <!-- Timeout limit in milliseconds for all test cases of the python binary -->
+      <option name="mobly-test-timeout" value="180000" />
+    </test>
+</configuration>
+
diff --git a/tests/cts/multidevices/connectivity_multi_devices_test.py b/tests/cts/multidevices/connectivity_multi_devices_test.py
new file mode 100644
index 0000000..ab88504
--- /dev/null
+++ b/tests/cts/multidevices/connectivity_multi_devices_test.py
@@ -0,0 +1,110 @@
+# Lint as: python3
+"""Connectivity multi devices tests."""
+import base64
+import sys
+import uuid
+
+from mobly import asserts
+from mobly import base_test
+from mobly import test_runner
+from mobly import utils
+from mobly.controllers import android_device
+
+CONNECTIVITY_MULTI_DEVICES_SNIPPET_PACKAGE = "com.google.snippet.connectivity"
+
+
+class UpstreamType:
+  CELLULAR = 1
+  WIFI = 2
+
+
+class ConnectivityMultiDevicesTest(base_test.BaseTestClass):
+
+  def setup_class(self):
+    # Declare that two Android devices are needed.
+    self.clientDevice, self.serverDevice = self.register_controller(
+        android_device, min_number=2
+    )
+
+    def setup_device(device):
+      device.load_snippet(
+          "connectivity_multi_devices_snippet",
+          CONNECTIVITY_MULTI_DEVICES_SNIPPET_PACKAGE,
+      )
+
+    # Set up devices in parallel to save time.
+    utils.concurrent_exec(
+        setup_device,
+        ((self.clientDevice,), (self.serverDevice,)),
+        max_workers=2,
+        raise_on_exception=True,
+    )
+
+  @staticmethod
+  def generate_uuid32_base64():
+    """Generates a UUID32 and encodes it in Base64.
+
+    Returns:
+        str: The Base64-encoded UUID32 string. Which is 22 characters.
+    """
+    return base64.b64encode(uuid.uuid1().bytes).decode("utf-8").strip("=")
+
+  def _do_test_hotspot_for_upstream_type(self, upstream_type):
+    """Test hotspot with the specified upstream type.
+
+    This test create a hotspot, make the client connect
+    to it, and verify the packet is forwarded by the hotspot.
+    """
+    server = self.serverDevice.connectivity_multi_devices_snippet
+    client = self.clientDevice.connectivity_multi_devices_snippet
+
+    # Assert pre-conditions specific to each upstream type.
+    asserts.skip_if(not client.hasWifiFeature(), "Client requires Wifi feature")
+    asserts.skip_if(
+      not server.hasHotspotFeature(), "Server requires hotspot feature"
+    )
+    if upstream_type == UpstreamType.CELLULAR:
+      asserts.skip_if(
+          not server.hasTelephonyFeature(), "Server requires Telephony feature"
+      )
+      server.requestCellularAndEnsureDefault()
+    elif upstream_type == UpstreamType.WIFI:
+      asserts.skip_if(
+          not server.isStaApConcurrencySupported(),
+          "Server requires Wifi AP + STA concurrency",
+      )
+      server.ensureWifiIsDefault()
+    else:
+      raise ValueError(f"Invalid upstream type: {upstream_type}")
+
+    # Generate ssid/passphrase with random characters to make sure nearby devices won't
+    # connect unexpectedly. Note that total length of ssid cannot go over 32.
+    testSsid = "HOTSPOT-" + self.generate_uuid32_base64()
+    testPassphrase = self.generate_uuid32_base64()
+
+    try:
+      # Create a hotspot with fixed SSID and password.
+      server.startHotspot(testSsid, testPassphrase)
+
+      # Make the client connects to the hotspot.
+      client.connectToWifi(testSsid, testPassphrase, True)
+
+    finally:
+      if upstream_type == UpstreamType.CELLULAR:
+        server.unrequestCellular()
+      # Teardown the hotspot.
+      server.stopAllTethering()
+
+  def test_hotspot_upstream_wifi(self):
+    self._do_test_hotspot_for_upstream_type(UpstreamType.WIFI)
+
+  def test_hotspot_upstream_cellular(self):
+    self._do_test_hotspot_for_upstream_type(UpstreamType.CELLULAR)
+
+
+if __name__ == "__main__":
+  # Take test args
+  if "--" in sys.argv:
+    index = sys.argv.index("--")
+    sys.argv = sys.argv[:1] + sys.argv[index + 1 :]
+  test_runner.main()
diff --git a/tests/cts/multidevices/snippet/Android.bp b/tests/cts/multidevices/snippet/Android.bp
new file mode 100644
index 0000000..5940cbb
--- /dev/null
+++ b/tests/cts/multidevices/snippet/Android.bp
@@ -0,0 +1,37 @@
+// Copyright (C) 2024 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 {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+android_test_helper_app {
+    name: "connectivity_multi_devices_snippet",
+    defaults: [
+        "ConnectivityTestsLatestSdkDefaults",
+        "cts_defaults",
+        "framework-connectivity-test-defaults",
+    ],
+    srcs: [
+        "ConnectivityMultiDevicesSnippet.kt",
+    ],
+    manifest: "AndroidManifest.xml",
+    static_libs: [
+        "androidx.test.runner",
+        "mobly-snippet-lib",
+        "cts-net-utils",
+    ],
+    platform_apis: true,
+    min_sdk_version: "30", // R
+}
diff --git a/tests/cts/multidevices/snippet/AndroidManifest.xml b/tests/cts/multidevices/snippet/AndroidManifest.xml
new file mode 100644
index 0000000..9ed8146
--- /dev/null
+++ b/tests/cts/multidevices/snippet/AndroidManifest.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 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.
+-->
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.google.snippet.connectivity">
+  <!-- Declare the minimum Android SDK version and internet permission,
+       which are required by Mobly Snippet Lib since it uses network socket. -->
+  <uses-sdk android:minSdkVersion="30" />
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+  <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+  <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+  <uses-permission android:name="android.permission.INTERNET" />
+  <application>
+    <!-- Add any classes that implement the Snippet interface as meta-data, whose
+         value is a comma-separated string, each section being the package path
+         of a snippet class -->
+    <meta-data
+        android:name="mobly-snippets"
+        android:value="com.google.snippet.connectivity.ConnectivityMultiDevicesSnippet" />
+  </application>
+  <!-- Add an instrumentation tag so that the app can be launched through an
+       instrument command. The runner `com.google.android.mobly.snippet.SnippetRunner`
+       is derived from `AndroidJUnitRunner`, and is required to use the
+       Mobly Snippet Lib. -->
+  <instrumentation
+      android:name="com.google.android.mobly.snippet.SnippetRunner"
+      android:targetPackage="com.google.snippet.connectivity" />
+</manifest>
diff --git a/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt b/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
new file mode 100644
index 0000000..115210b
--- /dev/null
+++ b/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2024 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 com.google.snippet.connectivity
+
+import android.Manifest.permission.OVERRIDE_WIFI_CONFIG
+import android.content.pm.PackageManager.FEATURE_TELEPHONY
+import android.content.pm.PackageManager.FEATURE_WIFI
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED
+import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.net.NetworkRequest
+import android.net.cts.util.CtsNetUtils
+import android.net.cts.util.CtsTetheringUtils
+import android.net.wifi.ScanResult
+import android.net.wifi.SoftApConfiguration
+import android.net.wifi.SoftApConfiguration.SECURITY_TYPE_WPA2_PSK
+import android.net.wifi.WifiConfiguration
+import android.net.wifi.WifiManager
+import android.net.wifi.WifiNetworkSpecifier
+import android.net.wifi.WifiSsid
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.testutils.ConnectUtil
+import com.android.testutils.RecorderCallback.CallbackEntry.Available
+import com.android.testutils.RecorderCallback.CallbackEntry.CapabilitiesChanged
+import com.android.testutils.TestableNetworkCallback
+import com.android.testutils.runAsShell
+import com.google.android.mobly.snippet.Snippet
+import com.google.android.mobly.snippet.rpc.Rpc
+
+class ConnectivityMultiDevicesSnippet : Snippet {
+    private val context = InstrumentationRegistry.getInstrumentation().getTargetContext()
+    private val wifiManager = context.getSystemService(WifiManager::class.java)!!
+    private val cm = context.getSystemService(ConnectivityManager::class.java)!!
+    private val pm = context.packageManager
+    private val ctsNetUtils = CtsNetUtils(context)
+    private val ctsTetheringUtils = CtsTetheringUtils(context)
+    private var oldSoftApConfig: SoftApConfiguration? = null
+
+    @Rpc(description = "Check whether the device has wifi feature.")
+    fun hasWifiFeature() = pm.hasSystemFeature(FEATURE_WIFI)
+
+    @Rpc(description = "Check whether the device has telephony feature.")
+    fun hasTelephonyFeature() = pm.hasSystemFeature(FEATURE_TELEPHONY)
+
+    @Rpc(description = "Check whether the device supporters AP + STA concurrency.")
+    fun isStaApConcurrencySupported() {
+        wifiManager.isStaApConcurrencySupported()
+    }
+
+    @Rpc(description = "Request cellular connection and ensure it is the default network.")
+    fun requestCellularAndEnsureDefault() {
+        ctsNetUtils.disableWifi()
+        val network = ctsNetUtils.connectToCell()
+        ctsNetUtils.expectNetworkIsSystemDefault(network)
+    }
+
+    @Rpc(description = "Unrequest cellular connection.")
+    fun unrequestCellular() {
+        ctsNetUtils.disconnectFromCell()
+    }
+
+    @Rpc(description = "Ensure any wifi is connected and is the default network.")
+    fun ensureWifiIsDefault() {
+        val network = ctsNetUtils.ensureWifiConnected()
+        ctsNetUtils.expectNetworkIsSystemDefault(network)
+    }
+
+    @Rpc(description = "Connect to specified wifi network.")
+    // Suppress warning because WifiManager methods to connect to a config are
+    // documented not to be deprecated for privileged users.
+    @Suppress("DEPRECATION")
+    fun connectToWifi(ssid: String, passphrase: String, requireValidation: Boolean): Network {
+        val specifier = WifiNetworkSpecifier.Builder()
+            .setSsid(ssid)
+            .setWpa2Passphrase(passphrase)
+            .setBand(ScanResult.WIFI_BAND_24_GHZ)
+            .build()
+        val wifiConfig = WifiConfiguration()
+        wifiConfig.SSID = "\"" + ssid + "\""
+        wifiConfig.preSharedKey = "\"" + passphrase + "\""
+        wifiConfig.hiddenSSID = true
+        wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA2_PSK)
+        wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP)
+        wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP)
+
+        // Register network callback for the specific wifi.
+        val networkCallback = TestableNetworkCallback()
+        val wifiRequest = NetworkRequest.Builder().addTransportType(TRANSPORT_WIFI)
+            .setNetworkSpecifier(specifier)
+            .build()
+        cm.registerNetworkCallback(wifiRequest, networkCallback)
+
+        try {
+            // Add the test configuration and connect to it.
+            val connectUtil = ConnectUtil(context)
+            connectUtil.connectToWifiConfig(wifiConfig)
+
+            val event = networkCallback.expect<Available>()
+            if (requireValidation) {
+                networkCallback.eventuallyExpect<CapabilitiesChanged> {
+                    it.caps.hasCapability(NET_CAPABILITY_VALIDATED)
+                }
+            }
+            return event.network
+        } finally {
+            cm.unregisterNetworkCallback(networkCallback)
+        }
+    }
+
+    @Rpc(description = "Check whether the device supports hotspot feature.")
+    fun hasHotspotFeature(): Boolean {
+        val tetheringCallback = ctsTetheringUtils.registerTetheringEventCallback()
+        try {
+            return tetheringCallback.isWifiTetheringSupported(context)
+        } finally {
+            ctsTetheringUtils.unregisterTetheringEventCallback(tetheringCallback)
+        }
+    }
+
+    @Rpc(description = "Start a hotspot with given SSID and passphrase.")
+    fun startHotspot(ssid: String, passphrase: String) {
+        // Store old config.
+        runAsShell(OVERRIDE_WIFI_CONFIG) {
+            oldSoftApConfig = wifiManager.getSoftApConfiguration()
+        }
+
+        val softApConfig = SoftApConfiguration.Builder()
+            .setWifiSsid(WifiSsid.fromBytes(ssid.toByteArray()))
+            .setPassphrase(passphrase, SECURITY_TYPE_WPA2_PSK)
+            .setBand(SoftApConfiguration.BAND_2GHZ)
+            .build()
+        runAsShell(OVERRIDE_WIFI_CONFIG) {
+            wifiManager.setSoftApConfiguration(softApConfig)
+        }
+        val tetheringCallback = ctsTetheringUtils.registerTetheringEventCallback()
+        try {
+            tetheringCallback.expectNoTetheringActive()
+            ctsTetheringUtils.startWifiTethering(tetheringCallback)
+        } finally {
+            ctsTetheringUtils.unregisterTetheringEventCallback(tetheringCallback)
+        }
+    }
+
+    @Rpc(description = "Stop all tethering.")
+    fun stopAllTethering() {
+        ctsTetheringUtils.stopAllTethering()
+
+        // Restore old config.
+        oldSoftApConfig?.let {
+            runAsShell(OVERRIDE_WIFI_CONFIG) {
+                wifiManager.setSoftApConfiguration(it)
+            }
+        }
+    }
+}