diff --git a/README_zh.md b/README_zh.md
index 4e6e20560f4e4ea75717adc6f577eb2766d428f5..f5b378bfccfbbd3eaf11486d432d596af33dcda8 100755
--- a/README_zh.md
+++ b/README_zh.md
@@ -27,12 +27,14 @@
   - [`Flashlight:`手电筒（JS）](https://gitee.com/openharmony/app_samples/tree/master/common/Flashlight)
   - [`JsHelloWorld:`你好世界（JS）](https://gitee.com/openharmony/app_samples/tree/master/common/JsHelloWorld)
   - [`eTSUtilBase64Codec:`Base64编解码（eTS）](https://gitee.com/openharmony/app_samples/tree/master/common/eTSUtilBase64Codec)
-  
 - data
   - [`eTSFileIo:`文件管理（eTS）](https://gitee.com/openharmony/app_samples/tree/master/data/eTSFileIo)
   - [`eTSKvStore:`分布式数据库（eTS）](https://gitee.com/openharmony/app_samples/tree/master/data/eTSKvStore)
   - [`eTSLiteStorage:`轻量级存储（eTS）](https://gitee.com/openharmony/app_samples/tree/master/data/eTSLiteStorage)
   - [`eTSRdb:`关系型数据库（eTS）](https://gitee.com/openharmony/app_samples/tree/master/data/eTSRdb)
+- device
+  - [`eTSDeviceManager:`设备管理（eTS）](https://gitee.com/openharmony/app_samples/tree/master/device/eTSDeviceManager)
+  - [`eTSWlan:`WLAN（eTS）](https://gitee.com/openharmony/app_samples/tree/master/device/eTSWlan) 
 - media
   - [`JsAudioPlayer:`音频播放和管理（JS）](https://gitee.com/openharmony/app_samples/tree/master/media/JsAudioPlayer)
   - [`JsVideo:`视频播放（JS）](https://gitee.com/openharmony/app_samples/tree/master/media/JsVideo)
@@ -85,6 +87,7 @@
 - Util
   - [`eTSUtilScope:`范围判断（eTS）](https://gitee.com/openharmony/app_samples/tree/master/Util/eTSUtilScope)
   - [`eTSUtilLruBuffer:`缓冲区（eTS）](https://gitee.com/openharmony/app_samples/tree/master/Util/eTSUtilLruBuffer)
+  - [`eTSUtilRationalNumber:`有理数（eTS）](https://gitee.com/openharmony/app_samples/tree/master/Util/eTSUtilRationalNumber)
 
 ## 使用说明<a name="section17988202503116"></a>
 
diff --git a/device/eTSWlan/README_zh.md b/device/eTSWlan/README_zh.md
new file mode 100644
index 0000000000000000000000000000000000000000..866aff96afaf81c39693a27b001b761f609f2c38
--- /dev/null
+++ b/device/eTSWlan/README_zh.md
@@ -0,0 +1,20 @@
+#  网络与连接-WLAN
+
+### 简介
+
+本示例展示了在eTS中WLAN的基本使用，包括禁用和启用WLAN、WLAN扫描和获取扫描结果、WLAN状态监听、WiFi连接状态监听、获取IP信息、获取国家码、判断设备是否支持WLAN相关特性。
+
+### 使用说明
+
+1、启动应用后会判断WLAN是否激活，如果是激活状态，会扫描并展示可用WiFi列表，同时获取已连接WiFi信息并展示。
+
+2、点击界面的Switch开关可以禁用和激活WLAN，界面会监听WLAN状态扫描可用WiFi列表，也会监听WiFi连接状态展示已连接WiFi。
+
+3、点击可用WLAN列表中的WLAN信息，可以连接WiFi，如果是加密类型，会弹窗输入密码后连接。
+
+4、点击首页右上角的**关于**图标，进入关于界面，展示获取的IP信息、国家码和支持WLAN相关特性信息。
+
+### 约束与限制
+
+1、本示例仅支持标准系统上运行。
+
diff --git a/device/eTSWlan/build.gradle b/device/eTSWlan/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..40d7a3d7c8ec041dbbcbce83990eb3897047d276
--- /dev/null
+++ b/device/eTSWlan/build.gradle
@@ -0,0 +1,34 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+apply plugin: 'com.huawei.ohos.app'
+
+// For instructions on signature configuration, see https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ide_debug_device-0000001053822404#section1112183053510
+ohos {
+    compileSdkVersion 8
+    supportSystem "standard"
+}
+
+buildscript {
+    repositories {
+        maven {
+            url 'https://repo.huaweicloud.com/repository/maven/'
+        }
+        maven {
+            url 'https://developer.huawei.com/repo/'
+        }
+    }
+    dependencies {
+        classpath 'com.huawei.ohos:hap:3.0.5.2'
+        classpath 'com.huawei.ohos:decctest:1.2.7.2'
+    }
+}
+
+allprojects {
+    repositories {
+        maven {
+            url 'https://repo.huaweicloud.com/repository/maven/'
+        }
+        maven {
+            url 'https://developer.huawei.com/repo/'
+        }
+    }
+}
diff --git a/device/eTSWlan/entry/build.gradle b/device/eTSWlan/entry/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..30b7ce4d32977e84afa220954ce819137aefd049
--- /dev/null
+++ b/device/eTSWlan/entry/build.gradle
@@ -0,0 +1,21 @@
+apply plugin: 'com.huawei.ohos.hap'
+// For instructions on signature configuration, see https://developer.harmonyos.com/cn/docs/documentation/doc-guides/ide_debug_device-0000001053822404#section1112183053510
+ohos {
+    compileSdkVersion 8
+    defaultConfig {
+        compatibleSdkVersion 7
+    }
+    buildTypes {
+        release {
+            proguardOpt {
+                proguardEnabled false
+                rulesFiles 'proguard-rules.pro'
+            }
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar', '*.har'])
+    testImplementation 'junit:junit:4.13.1'
+}
diff --git a/device/eTSWlan/entry/src/main/config.json b/device/eTSWlan/entry/src/main/config.json
new file mode 100644
index 0000000000000000000000000000000000000000..852440dd100a4574e5ab01fdac00d153b0dda305
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/config.json
@@ -0,0 +1,68 @@
+{
+  "app": {
+    "bundleName": "ohos.samples.etswlan",
+    "vendor": "samples",
+    "version": {
+      "code": 1000000,
+      "name": "1.0.0"
+    }
+  },
+  "deviceConfig": {},
+  "module": {
+    "package": "ohos.samples.etswlan",
+    "name": ".MyApplication",
+    "mainAbility": ".MainAbility",
+    "srcPath": "",
+    "deviceType": [
+      "phone"
+    ],
+    "distro": {
+      "deliveryWithInstall": true,
+      "moduleName": "entry",
+      "moduleType": "entry",
+      "installationFree": false
+    },
+    "abilities": [
+      {
+        "skills": [
+          {
+            "entities": [
+              "entity.system.home"
+            ],
+            "actions": [
+              "action.system.home"
+            ]
+          }
+        ],
+        "orientation": "unspecified",
+        "visible": true,
+        "srcPath": "MainAbility",
+        "name": ".MainAbility",
+        "srcLanguage": "ets",
+        "icon": "$media:icon",
+        "description": "$string:description_mainability",
+        "formsEnabled": false,
+        "label": "$string:entry_MainAbility",
+        "type": "page",
+        "launchType": "standard"
+      }
+    ],
+    "js": [
+      {
+        "mode": {
+          "syntax": "ets",
+          "type": "pageAbility"
+        },
+        "pages": [
+          "pages/index",
+          "pages/about"
+        ],
+        "name": ".MainAbility",
+        "window": {
+          "designWidth": 720,
+          "autoDesignWidth": false
+        }
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/app.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/app.ets
new file mode 100644
index 0000000000000000000000000000000000000000..bf28e58b36cf11db491d3f00768ef2c9e41d05cf
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/app.ets
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+export default {
+  onCreate() {
+    console.info('Application onCreate')
+  },
+  onDestroy() {
+    console.info('Application onDestroy')
+  },
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/component/availableWifi.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/component/availableWifi.ets
new file mode 100644
index 0000000000000000000000000000000000000000..d20e3b6135da0386bd51357c38457e1bbcfd6cc6
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/component/availableWifi.ets
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+import prompt from '@system.prompt'
+import { WifiModel } from '../model/wifiModel'
+import { WifiView } from '../component/wifiView'
+import { PasswordDialog } from '../component/pswDialog'
+
+const TAG = '[AvailableWiFi]'
+let self = null
+
+@Component
+export struct AvailableWifi {
+  private wifiModel = new WifiModel()
+  @State wifiList: Array<any> = []
+  private linkedInfo: any = null
+  private selectIndex: number = -1
+  private pswDialogController: CustomDialogController = new CustomDialogController({
+    builder: PasswordDialog({ scanInfo: this.wifiList[this.selectIndex], action: this.onAccept }),
+    autoCancel: true
+  })
+
+  onAccept(scanInfo, psw) {
+    console.info(`${TAG} connect wifi`)
+    self.wifiModel.connectNetwork(scanInfo, psw)
+  }
+
+  aboutToAppear() {
+    self = this
+  }
+
+  build() {
+    Column() {
+      Row() {
+        Text($r('app.string.available_wlan'))
+          .fontSize(22)
+          .layoutWeight(1)
+      }
+      .width('95%')
+
+      List() {
+        ForEach(this.wifiList, (item, index) => {
+          ListItem() {
+            WifiView({ wifi: item })
+          }
+          .onClick(() => {
+            console.info(TAG + 'connect wifi')
+            this.selectIndex = index
+            if (this.linkedInfo !== null && item.ssid === this.linkedInfo.ssid) {
+              prompt.showToast({ message: 'this wifi is connected' })
+              return
+            }
+            if (item.securityType === 0 || item.securityType === 1) {
+              this.wifiModel.connectNetwork(item, '')
+              return
+            }
+            this.pswDialogController.open()
+          })
+        }, item => JSON.stringify(item))
+      }
+      .layoutWeight(1)
+      .divider({ strokeWidth: 1, color: Color.Gray, startMargin: 10, endMargin: 10 })
+      .margin(10)
+    }
+    .margin({ top: 15 })
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/component/infoView.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/component/infoView.ets
new file mode 100644
index 0000000000000000000000000000000000000000..d2ddb37e3b68188ef1f201bc32fd37621ce28664
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/component/infoView.ets
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+@Component
+export struct InfoView {
+  private infoList: Array<any> = []
+
+  build() {
+    Column() {
+      ForEach(this.infoList, (item, index) => {
+        Column() {
+          Text(item.key)
+            .fontColor(Color.Black)
+            .fontSize(20)
+            .width('100%')
+          Text(item.value)
+            .fontColor(Color.Black)
+            .fontSize(20)
+            .width('100%')
+            .margin({ top: 5, bottom: 5 })
+          if (index < this.infoList.length - 1) {
+            Divider().color(Color.Grey)
+          }
+        }
+        .padding(5)
+      }, item => JSON.stringify(item))
+    }
+    .margin(10)
+    .border({ width: 1, color: Color.Gray, radius: 15 })
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/component/pswDialog.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/component/pswDialog.ets
new file mode 100644
index 0000000000000000000000000000000000000000..efdfd8f9750d515fb1a7592a59ef8beb3b99c46a
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/component/pswDialog.ets
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+@CustomDialog
+export struct PasswordDialog {
+  private scanInfo: any = null
+  private psw: string = ''
+  private controller: CustomDialogController
+  private action: (scanInfo, psw) => void
+
+  build() {
+    Column() {
+      Text(this.scanInfo.ssid)
+        .fontSize(20)
+        .width('95%')
+      TextInput({ placeholder: 'input password' })
+        .type(InputType.Password)
+        .placeholderColor(Color.Gray)
+        .fontSize(19)
+        .margin({ top: 15 })
+        .width('95%')
+        .onChange((value: string) => {
+          this.psw = value
+        })
+      Row() {
+        Button() {
+          Text($r('app.string.sure'))
+            .fontColor(Color.Blue)
+            .fontSize(17)
+        }
+        .layoutWeight(7)
+        .backgroundColor(Color.White)
+        .margin(5)
+        .onClick(() => {
+          this.controller.close()
+          this.action(this.scanInfo, this.psw)
+        })
+
+        Text()
+          .width(1).height(35)
+          .backgroundColor('#8F8F8F')
+        Button() {
+          Text($r('app.string.cancel'))
+            .fontColor(Color.Red)
+            .fontSize(17)
+        }
+        .layoutWeight(7)
+        .backgroundColor(Color.White)
+        .margin(5)
+        .onClick(() => {
+          this.controller.close()
+        })
+      }
+      .width('100%')
+      .margin({ top: '3%' })
+    }
+    .padding(15)
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/component/titleBar.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/component/titleBar.ets
new file mode 100644
index 0000000000000000000000000000000000000000..cd91e1db061c5d905798a4295350a48faf34e229
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/component/titleBar.ets
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import router from '@system.router';
+
+@Component
+export struct TitleBar {
+  build() {
+    Row() {
+      Text($r('app.string.entry_MainAbility'))
+        .fontColor(Color.White)
+        .fontSize(25)
+        .layoutWeight(1)
+      Button() {
+        Image($r('app.media.about'))
+          .size({ width: 60, height: '95%' })
+          .objectFit(ImageFit.Contain)
+      }.type(ButtonType.Normal)
+      .height('90%')
+      .backgroundColor('#0D9FFB')
+      .onClick(() => {
+        router.push({ uri: 'pages/about' })
+      })
+    }
+    .width('100%')
+    .height('8%')
+    .constraintSize({ minHeight: 50 })
+    .padding({ left: 15 })
+    .backgroundColor('#0D9FFB')
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/component/wifiView.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/component/wifiView.ets
new file mode 100644
index 0000000000000000000000000000000000000000..bc3692865926a03d7c0a7e6410de31907928e03d
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/component/wifiView.ets
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+@Component
+export struct WifiView {
+  private wifi: any = null
+  private securityString: Resource = $r('app.string.encryption')
+  @State isLock: boolean = true
+
+  aboutToAppear() {
+    if (this.wifi.securityType === 0 || this.wifi.securityType === 1) {
+      this.securityString = $r('app.string.open')
+      this.isLock = false
+    }
+  }
+
+  build() {
+    Row() {
+      Column() {
+        Text(this.wifi.ssid)
+          .fontSize(20)
+          .width('100%')
+        Text(this.securityString)
+          .fontSize(18)
+          .fontColor(Color.Gray)
+          .width('100%')
+      }
+      .layoutWeight(1)
+
+      Stack({ alignContent: Alignment.BottomEnd }) {
+        Image($r('app.media.wifi'))
+          .height(30).width(30)
+          .objectFit(ImageFit.Contain)
+        if (this.isLock) {
+          Image($r("app.media.lock"))
+            .objectFit(ImageFit.Contain)
+            .width(15).height(15)
+        }
+      }
+      .width(40).height(40)
+      .margin({ right: 10 })
+    }
+    .backgroundColor(Color.White)
+    .width('100%')
+    .padding(10)
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/model/wifiModel.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/model/wifiModel.ets
new file mode 100644
index 0000000000000000000000000000000000000000..44bee75aa73628e21ffb5d5fd6ed21a6f06dcd16
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/model/wifiModel.ets
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import wifi from '@ohos.wifi';
+import prompt from '@system.prompt';
+
+const TAG = '[WiFiModel]'
+
+export class WifiModel {
+  private eventListener = null
+
+  constructor() {
+    this.eventListener = new wifi.EventListener()
+  }
+
+  addConnectListener(callback) {
+    this.eventListener.on('wifiConnectionChange', (state) => {
+      console.info(`${TAG} wifiConnectionChange ${state}`)
+      callback(state)
+    })
+  }
+
+  addWifiStateListener(callback) {
+    this.eventListener.on('wifiStateChange', (state) => {
+      console.info(`${TAG} wifiStateChange ${state}`)
+      callback(state)
+    })
+  }
+
+  getScanInfos(callback) {
+    wifi.scan()
+    console.info(`${TAG} scanWifi`)
+    wifi.getScanInfos((result) => {
+      let wifiList = []
+      console.info(`${TAG} wifi received scan info call back:${JSON.stringify(result)}`)
+      if (result === null || result.length === 0) {
+        callback(wifiList)
+        return
+      }
+      for (var i = 0; i < result.length; ++i) {
+        wifiList.push({
+          ssid: result[i].ssid,
+          bssid: result[i].bssid,
+          securityType: result[i].securityType,
+          rssi: result[i].rssi,
+          band: result[i].band,
+          frequency: result[i].frequency,
+          timestamp: result[i].timestamp,
+        })
+      }
+      callback(wifiList)
+    })
+  }
+
+  connectNetwork(scanInfo, psw) {
+    prompt.showToast({ message: 'connecting' })
+    console.info(`${TAG} connectNetwork bssid=${scanInfo.bssid}`)
+    let deviceConfigs = wifi.getDeviceConfigs()
+    console.info(TAG + 'getDeviceConfigs:' + JSON.stringify(deviceConfigs))
+    for (let i = 0;i < deviceConfigs.length; i++) {
+      if (deviceConfigs[i].bssid === scanInfo.bssid) {
+        if (deviceConfigs[i].preSharedKey !== psw) {
+          prompt.showToast({ message: 'err password' })
+          return
+        }
+        prompt.showToast({ message: `connect result = ${wifi.connectToDevice(deviceConfigs[i])}` })
+        return
+      }
+    }
+    let deviceConfig = {
+      ssid: scanInfo.ssid,
+      bssid: scanInfo.bssid,
+      preSharedKey: psw,
+      isHiddenSsid: false,
+      securityType: scanInfo.securityType
+    }
+    if (wifi.connectToDevice(deviceConfig)) {
+      prompt.showToast({ message: 'connect success' })
+      wifi.addDeviceConfig(deviceConfig)
+    } else {
+      prompt.showToast({ message: 'connect fail' })
+    }
+  }
+
+  resolveIP(ip) {
+    let address: string = ip.toString()
+    if (address === '0') {
+      return '00:00:000:000'
+    }
+    address.substring(0, 2)
+    return `${address.substring(0, 2)}:${address.substring(2, 4)}:${address.substring(4, 7)}:${address.substring(7, 10)}`
+  }
+
+  getIpInfo() {
+    let ipInfoList = []
+    let ipInfo = wifi.getIpInfo()
+    console.info(`${TAG} getIpInfo=${JSON.stringify(ipInfo)}`)
+    ipInfoList.push({ key: $r('app.string.ip_address'), value: this.resolveIP(ipInfo.ipAddress) })
+    ipInfoList.push({ key: $r('app.string.gate_way'), value: this.resolveIP(ipInfo.gateway) })
+    ipInfoList.push({ key: $r('app.string.net_mask'), value: this.resolveIP(ipInfo.netmask) })
+    ipInfoList.push({ key: $r('app.string.primary_dns'), value: this.resolveIP(ipInfo.primaryDns) })
+    ipInfoList.push({ key: $r('app.string.second_dns'), value: this.resolveIP(ipInfo.secondDns) })
+    ipInfoList.push({ key: $r('app.string.server_ip'), value: this.resolveIP(ipInfo.serverIp) })
+    ipInfoList.push({ key: $r('app.string.lease_duration'), value: ipInfo.leaseDuration.toString() })
+    return ipInfoList
+  }
+
+  getCountryCode() {
+    let countryCodeList = []
+    let countryCode = wifi.getCountryCode()
+    countryCodeList.push({ key: $r('app.string.country_code'), value: 'CH' })
+    return countryCodeList
+  }
+
+  getFeatureSupport() {
+    let featureSupportedList = []
+    featureSupportedList.push({
+      key: $r('app.string.infrastructure_feature'),
+      value: wifi.isFeatureSupported(0x0001).toString()
+    })
+    featureSupportedList.push({ key: $r('app.string.ghz_feature'), value: wifi.isFeatureSupported(0x0002).toString() })
+    featureSupportedList.push({
+      key: $r('app.string.gas_anqp_feature'),
+      value: wifi.isFeatureSupported(0x0004).toString()
+    })
+    featureSupportedList.push({ key: $r('app.string.wifi_direct'), value: wifi.isFeatureSupported(0x0008).toString() })
+    featureSupportedList.push({ key: $r('app.string.soft_ap'), value: wifi.isFeatureSupported(0x0010).toString() })
+    featureSupportedList.push({ key: $r('app.string.wifi_aware'), value: wifi.isFeatureSupported(0x0040).toString() })
+    return featureSupportedList
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/pages/about.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/pages/about.ets
new file mode 100644
index 0000000000000000000000000000000000000000..8b2e394955c909327a97d2b53ff81b941eacf64d
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/pages/about.ets
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import router from '@system.router'
+import { WifiModel } from '../model/wifiModel'
+import { InfoView } from '../component/infoView.ets'
+
+@Entry
+@Component
+struct About {
+  private wifiModel: WifiModel = new WifiModel()
+
+  build() {
+    Column() {
+      Row() {
+        Image($r('app.media.ic_back'))
+          .size({ width: 50, height: '100%' })
+          .objectFit(ImageFit.Contain)
+          .onClick(() => {
+            router.back()
+          })
+        Text($r('app.string.about'))
+          .fontColor(Color.White)
+          .fontSize(25)
+          .layoutWeight(1)
+      }
+      .width('100%').height('8%')
+      .constraintSize({ minHeight: 50 })
+      .backgroundColor('#0D9FFB')
+
+      Scroll() {
+        Column() {
+          InfoView({ infoList: this.wifiModel.getIpInfo() })
+          InfoView({ infoList: this.wifiModel.getCountryCode() })
+          InfoView({ infoList: this.wifiModel.getFeatureSupport() })
+        }
+      }
+      .layoutWeight(1)
+    }
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/ets/MainAbility/pages/index.ets b/device/eTSWlan/entry/src/main/ets/MainAbility/pages/index.ets
new file mode 100644
index 0000000000000000000000000000000000000000..7f7086cb37039fbef24bcf701e7718ef67df61e9
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/ets/MainAbility/pages/index.ets
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2021 Huawei Device Co., Ltd.
+ * 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.
+ */
+
+import wifi from '@ohos.wifi';
+import { WifiModel } from '../model/wifiModel'
+import { TitleBar } from '../component/titleBar'
+import { AvailableWifi } from '../component/availableWifi'
+
+const TAG = '[eTSWiFi]'
+let self = null
+
+@Entry
+@Component
+struct Index {
+  private wifiModel: WifiModel = new WifiModel()
+  private linkedInfo: any = { ssid: "", bssid: "", networkId: 0, rssi: 0, band: 0 }
+  @State wifiList: Array<any> = []
+  @State isLinked: boolean = false
+  @State isSwitchOn: boolean = false
+
+  scan() {
+    this.wifiModel.getScanInfos((result) => {
+      if (self.isSwitchOn) {
+        self.wifiList = result
+        if (result.length === 0) {
+          setTimeout(() => {
+            self.scan()
+          }, 1000)
+        }
+      }
+    })
+  }
+
+  getLinkedInfo() {
+    wifi.getLinkedInfo((linkedInfo) => {
+      console.info(`${TAG} linkedInfo ${JSON.stringify(linkedInfo)}`)
+      if (linkedInfo === null) {
+        self.isLinked = false
+        self.linkedInfo = { ssid: "", bssid: "", networkId: 0, rssi: 0, band: 0 }
+        return
+      }
+      self.linkedInfo = linkedInfo
+      self.isLinked = self.linkedInfo.bssid.length > 0 ? true : false
+    })
+  }
+
+  addListener() {
+    this.wifiModel.addConnectListener((state) => {
+      console.info(`${TAG}  connectLisener state=' ${state}`)
+      if (state === 1 || state === 4) {
+        self.isLinked = true
+        self.getLinkedInfo()
+        return
+      }
+      self.isLinked = false
+    })
+    this.wifiModel.addWifiStateListener((state) => {
+      console.info(`${TAG}  wifiStateLisener state=' ${state}`)
+      self.wifiList = []
+      if (state === 2 || state === 3) {
+        self.scan()
+      }
+    })
+  }
+
+  aboutToAppear() {
+    self = this
+    if (wifi.isWifiActive()) {
+      console.info(`${TAG}  wifi active`)
+      this.isSwitchOn = true
+      this.scan()
+      if (wifi.isConnected()) {
+        this.getLinkedInfo()
+      }
+    }
+    this.addListener()
+  }
+
+  build() {
+    Column() {
+      TitleBar()
+      Row() {
+        Text($r('app.string.wlan'))
+          .fontSize(22)
+          .fontWeight(FontWeight.Bold)
+          .layoutWeight(1)
+        Column() {
+          Toggle({ type: ToggleType.Switch, isOn: this.isSwitchOn })
+            .onChange((isOn: boolean) => {
+              console.info(`${TAG} wifi swtich is ${isOn}`)
+              if (isOn) {
+                this.isSwitchOn = true
+                wifi.enableWifi()
+                return
+              }
+              this.isSwitchOn = false
+              this.isLinked = false
+              wifi.disconnect()
+              wifi.disableWifi()
+            })
+        }
+      }
+      .width('95%')
+
+      if (this.isLinked) {
+        Text($r('app.string.connected'))
+          .fontSize(22)
+          .width('95%')
+        Row() {
+          Text(this.linkedInfo.ssid)
+            .fontSize(20)
+            .fontColor(Color.Black)
+            .layoutWeight(1)
+          Text($r('app.string.connected'))
+            .fontSize(18)
+            .fontColor(Color.Black)
+        }
+        .width('95%')
+        .padding(10)
+        .margin(10)
+        .border({ radius: 15, color: Color.Gray, width: 1 })
+        .backgroundColor(Color.White)
+      }
+      AvailableWifi({ wifiList: this.wifiList, linkedInfo: this.linkedInfo })
+    }
+    .size({ width: '100%', height: '100%' })
+    .backgroundColor('#F5F5F5')
+  }
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/resources/base/element/string.json b/device/eTSWlan/entry/src/main/resources/base/element/string.json
new file mode 100644
index 0000000000000000000000000000000000000000..0fa7e414a8f85f80364ce97fdb1b6d9df2b78278
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/resources/base/element/string.json
@@ -0,0 +1,100 @@
+{
+  "string": [
+    {
+      "name": "entry_MainAbility",
+      "value": "eTSWLAN"
+    },
+    {
+      "name": "description_mainability",
+      "value": "eTSWLAN Ability"
+    },
+    {
+      "name": "cancel",
+      "value": "Cancel"
+    },
+    {
+      "name": "sure",
+      "value": "Sure"
+    },
+    {
+      "name": "wlan",
+      "value": "WLAN"
+    },
+    {
+      "name": "available_wlan",
+      "value": "Available WLAN"
+    },
+    {
+      "name": "connected",
+      "value": "Connected"
+    },
+    {
+      "name": "about",
+      "value": "About"
+    },
+    {
+      "name": "ip_address",
+      "value": "IP address:"
+    },
+    {
+      "name": "gate_way",
+      "value": "Gateway:"
+    },
+    {
+      "name": "net_mask",
+      "value": "Netmask:"
+    },
+    {
+      "name": "primary_dns",
+      "value": "Primary Dns IP address:"
+    },
+    {
+      "name": "second_dns",
+      "value": "Second DNS IP address:"
+    },
+    {
+      "name": "server_ip",
+      "value": "DHCP server IP:"
+    },
+    {
+      "name": "lease_duration",
+      "value": "IP address lease duration:"
+    },
+    {
+      "name": "country_code",
+      "value": "Country code:"
+    },
+    {
+      "name": "infrastructure_feature",
+      "value": "Infrastructure Feature:"
+    },
+    {
+      "name": "ghz_feature",
+      "value": "5 GHz Feature:"
+    },
+    {
+      "name": "gas_anqp_feature",
+      "value": "GAS/ANQP Feature:"
+    },
+    {
+      "name": "wifi_direct",
+      "value": "WiFi-Direct Feature:"
+    },
+    {
+      "name": "soft_ap",
+      "value": "Soft AP Feature:"
+    },
+    {
+      "name": "wifi_aware",
+      "value": "WiFi Aware Feature:"
+    },
+    {
+      "name": "encryption",
+      "value": "encrypted"
+    },
+    {
+      "name": "open",
+      "value": "open"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/resources/base/media/about.png b/device/eTSWlan/entry/src/main/resources/base/media/about.png
new file mode 100644
index 0000000000000000000000000000000000000000..2613fc352850e45f0582fa825183e3928cef3378
Binary files /dev/null and b/device/eTSWlan/entry/src/main/resources/base/media/about.png differ
diff --git a/device/eTSWlan/entry/src/main/resources/base/media/ic_back.png b/device/eTSWlan/entry/src/main/resources/base/media/ic_back.png
new file mode 100644
index 0000000000000000000000000000000000000000..9f793557fd1ba7a4941e2ba4dea6fc2316eb5f24
Binary files /dev/null and b/device/eTSWlan/entry/src/main/resources/base/media/ic_back.png differ
diff --git a/device/eTSWlan/entry/src/main/resources/base/media/icon.png b/device/eTSWlan/entry/src/main/resources/base/media/icon.png
new file mode 100644
index 0000000000000000000000000000000000000000..ce307a8827bd75456441ceb57d530e4c8d45d36c
Binary files /dev/null and b/device/eTSWlan/entry/src/main/resources/base/media/icon.png differ
diff --git a/device/eTSWlan/entry/src/main/resources/base/media/lock.png b/device/eTSWlan/entry/src/main/resources/base/media/lock.png
new file mode 100644
index 0000000000000000000000000000000000000000..b78d86d2fc3afcc542f069b75ada2338fcf1a71a
Binary files /dev/null and b/device/eTSWlan/entry/src/main/resources/base/media/lock.png differ
diff --git a/device/eTSWlan/entry/src/main/resources/base/media/wifi.png b/device/eTSWlan/entry/src/main/resources/base/media/wifi.png
new file mode 100644
index 0000000000000000000000000000000000000000..7017ea920f2683095b49d9f8221e40d7697f9943
Binary files /dev/null and b/device/eTSWlan/entry/src/main/resources/base/media/wifi.png differ
diff --git a/device/eTSWlan/entry/src/main/resources/en/element/string.json b/device/eTSWlan/entry/src/main/resources/en/element/string.json
new file mode 100644
index 0000000000000000000000000000000000000000..55c25ef852b8c14e302d2f4963ecb4764776cf8c
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/resources/en/element/string.json
@@ -0,0 +1,100 @@
+{
+  "string": [
+    {
+      "name": "entry_MainAbility",
+      "value": "eTSWLAN"
+    },
+    {
+      "name": "description_mainability",
+      "value": "eTSWLAN Ability"
+    },
+    {
+      "name": "cancel",
+      "value": "Cancel"
+    },
+    {
+      "name": "wlan",
+      "value": "WLAN"
+    },
+    {
+      "name": "sure",
+      "value": "Sure"
+    },
+    {
+      "name": "available_wlan",
+      "value": "Available WLAN"
+    },
+    {
+      "name": "connected",
+      "value": "Connected"
+    },
+    {
+      "name": "about",
+      "value": "About"
+    },
+    {
+      "name": "ip_address",
+      "value": "IP address:"
+    },
+    {
+      "name": "gate_way",
+      "value": "Gateway:"
+    },
+    {
+      "name": "net_mask",
+      "value": "Netmask:"
+    },
+    {
+      "name": "primary_dns",
+      "value": "Primary Dns IP address:"
+    },
+    {
+      "name": "second_dns",
+      "value": "Second DNS IP address:"
+    },
+    {
+      "name": "server_ip",
+      "value": "DHCP server IP:"
+    },
+    {
+      "name": "lease_duration",
+      "value": "IP address lease duration:"
+    },
+    {
+      "name": "country_code",
+      "value": "Country code:"
+    },
+    {
+      "name": "infrastructure_feature",
+      "value": "Infrastructure Feature:"
+    },
+    {
+      "name": "ghz_feature",
+      "value": "5 GHz Feature:"
+    },
+    {
+      "name": "gas_anqp_feature",
+      "value": "GAS/ANQP Feature:"
+    },
+    {
+      "name": "wifi_direct",
+      "value": "WiFi-Direct Feature:"
+    },
+    {
+      "name": "soft_ap",
+      "value": "Soft AP Feature:"
+    },
+    {
+      "name": "wifi_aware",
+      "value": "WiFi Aware Feature:"
+    },
+    {
+      "name": "encryption",
+      "value": "encrypted"
+    },
+    {
+      "name": "open",
+      "value": "open"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/device/eTSWlan/entry/src/main/resources/zh/element/string.json b/device/eTSWlan/entry/src/main/resources/zh/element/string.json
new file mode 100644
index 0000000000000000000000000000000000000000..104950ec13dbe6e6c3731bd756f64e9ea2547da3
--- /dev/null
+++ b/device/eTSWlan/entry/src/main/resources/zh/element/string.json
@@ -0,0 +1,100 @@
+{
+  "string": [
+    {
+      "name": "entry_MainAbility",
+      "value": "eTSWLAN"
+    },
+    {
+      "name": "description_mainability",
+      "value": "eTSWLAN Ability"
+    },
+    {
+      "name": "cancel",
+      "value": "取消"
+    },
+    {
+      "name": "sure",
+      "value": "确定"
+    },
+    {
+      "name": "wlan",
+      "value": "WLAN"
+    },
+    {
+      "name": "available_wlan",
+      "value": "可用WLAN"
+    },
+    {
+      "name": "connected",
+      "value": "已连接"
+    },
+    {
+      "name": "about",
+      "value": "关于"
+    },
+    {
+      "name": "ip_address",
+      "value": "IP地址:"
+    },
+    {
+      "name": "gate_way",
+      "value": "网关:"
+    },
+    {
+      "name": "net_mask",
+      "value": "掩码:"
+    },
+    {
+      "name": "primary_dns",
+      "value": "主DNS服务器:"
+    },
+    {
+      "name": "second_dns",
+      "value": "备DNS服务器:"
+    },
+    {
+      "name": "server_ip",
+      "value": "DHCP服务端ip:"
+    },
+    {
+      "name": "lease_duration",
+      "value": "IP地址租用时长:"
+    },
+    {
+      "name": "country_code",
+      "value": "国家码："
+    },
+    {
+      "name": "infrastructure_feature",
+      "value": "基础结构模式特性:"
+    },
+    {
+      "name": "ghz_feature",
+      "value": "5 GHz 宽带特性:"
+    },
+    {
+      "name": "gas_anqp_feature",
+      "value": "GAS/ANQP特性:"
+    },
+    {
+      "name": "wifi_direct",
+      "value": "WiFi-Direct特性:"
+    },
+    {
+      "name": "soft_ap",
+      "value": "Soft AP特性:"
+    },
+    {
+      "name": "wifi_aware",
+      "value": "WiFi Aware组网特性:"
+    },
+    {
+      "name": "encryption",
+      "value": "加密"
+    },
+    {
+      "name": "open",
+      "value": "开放"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/device/eTSWlan/screenshots/device/about.png b/device/eTSWlan/screenshots/device/about.png
new file mode 100644
index 0000000000000000000000000000000000000000..0bd29a963b7d150e90fee835d3c358e85374a6ed
Binary files /dev/null and b/device/eTSWlan/screenshots/device/about.png differ
diff --git a/device/eTSWlan/screenshots/device/main.png b/device/eTSWlan/screenshots/device/main.png
new file mode 100644
index 0000000000000000000000000000000000000000..89be60c2bc65f363f802fda83dafa103818e7586
Binary files /dev/null and b/device/eTSWlan/screenshots/device/main.png differ
diff --git a/device/eTSWlan/screenshots/device/password.png b/device/eTSWlan/screenshots/device/password.png
new file mode 100644
index 0000000000000000000000000000000000000000..a5c8b4fee5109a1858eb211fcbea178596ed18c8
Binary files /dev/null and b/device/eTSWlan/screenshots/device/password.png differ
diff --git a/device/eTSWlan/settings.gradle b/device/eTSWlan/settings.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..4773db73233a570c2d0c01a22e75321acfbf7a07
--- /dev/null
+++ b/device/eTSWlan/settings.gradle
@@ -0,0 +1 @@
+include ':entry'