diff --git a/README.md b/README.md
index 57ebc34..5e52fee 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,34 @@ JS 全局对象：
 
 所有方法都使用 Cordova callback 风格，适合在 OutSystems client action 中封装。
 
+```js
+BluememeUtils.getDeviceInfo(function (info) {
+  console.log(info.deviceKey);
+}, error);
+```
+
+`getDeviceInfo` 返回：
+
+```json
+{
+  "deviceKey": "generated-and-persisted-uuid",
+  "platform": "Android",
+  "appIdentifier": "com.company.app",
+  "appVersion": "1.0.0",
+  "buildNumber": "1",
+  "osVersion": "15",
+  "sdkVersion": 35,
+  "deviceModel": "Google Pixel 8",
+  "manufacturer": "Google",
+  "brand": "google",
+  "model": "Pixel 8",
+  "locale": "ja-JP",
+  "timeZone": "Asia/Tokyo"
+}
+```
+
+`deviceKey` 首次调用时生成并保存在本地，用于标识当前 App 安装实例。App 卸载或清除数据后会重新生成。iOS 不返回 `sdkVersion`、`manufacturer`、`brand`，但会返回 `systemName`。
+
 ```js
 BluememeUtils.requestWifiPermission(success, error);
 
diff --git a/src/android/BluememeUtils.java b/src/android/BluememeUtils.java
index a8c469b..aeb917d 100644
--- a/src/android/BluememeUtils.java
+++ b/src/android/BluememeUtils.java
@@ -11,6 +11,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.hardware.biometrics.BiometricManager;
 import android.hardware.biometrics.BiometricPrompt;
@@ -47,11 +48,14 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Locale;
+import java.util.TimeZone;
+import java.util.UUID;
 import java.util.concurrent.Executor;
 
 public class BluememeUtils extends CordovaPlugin {
     private static final String TAG = "BluememeUtils";
     private static final String PREFS = "bluememe_utils";
+    private static final String KEY_DEVICE_KEY = "device_key";
     private static final String KEY_FCM_TOKEN = "fcm_token";
     private static final String KEY_INITIAL_NOTIFICATION = "initial_notification";
     private static final String ACTION_SUFFIX = ".BLUEMEME_UTILS_EVENT";
@@ -75,6 +79,10 @@ public class BluememeUtils extends CordovaPlugin {
 
     @Override
     public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
+        if ("getDeviceInfo".equals(action)) {
+            getDeviceInfo(callbackContext);
+            return true;
+        }
         if ("saveWifi".equals(action)) {
             saveWifi(args.optJSONObject(0), callbackContext);
             return true;
@@ -184,6 +192,32 @@ public class BluememeUtils extends CordovaPlugin {
         }
     }
 
+    private void getDeviceInfo(CallbackContext callbackContext) {
+        Context context = cordova.getActivity().getApplicationContext();
+        try {
+            JSONObject result = new JSONObject();
+            PackageInfo packageInfo = packageInfo(context);
+
+            result.put("deviceKey", getOrCreateDeviceKey(context));
+            result.put("platform", "Android");
+            result.put("appIdentifier", context.getPackageName());
+            result.put("appVersion", packageInfo == null || packageInfo.versionName == null ? "" : packageInfo.versionName);
+            result.put("buildNumber", packageInfo == null ? "" : String.valueOf(packageVersionCode(packageInfo)));
+            result.put("osVersion", Build.VERSION.RELEASE == null ? "" : Build.VERSION.RELEASE);
+            result.put("sdkVersion", Build.VERSION.SDK_INT);
+            result.put("deviceModel", deviceModel());
+            result.put("manufacturer", Build.MANUFACTURER == null ? "" : Build.MANUFACTURER);
+            result.put("brand", Build.BRAND == null ? "" : Build.BRAND);
+            result.put("model", Build.MODEL == null ? "" : Build.MODEL);
+            result.put("locale", currentLocaleTag());
+            result.put("timeZone", TimeZone.getDefault().getID());
+
+            callbackContext.success(result);
+        } catch (Exception ex) {
+            sendError(callbackContext, "DEVICE_INFO_FAILED", ex.getMessage());
+        }
+    }
+
     private void connectWifi(JSONObject options, CallbackContext callbackContext) {
         JSONObject normalized = normalizeWifiOptions(options);
         String validationError = validateWifiOptions(normalized);
@@ -1124,6 +1158,60 @@ public class BluememeUtils extends CordovaPlugin {
         return value == null ? "" : String.valueOf(value);
     }
 
+    private static PackageInfo packageInfo(Context context) {
+        try {
+            PackageManager packageManager = context.getPackageManager();
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+                return packageManager.getPackageInfo(context.getPackageName(), PackageManager.PackageInfoFlags.of(0));
+            }
+            return packageManager.getPackageInfo(context.getPackageName(), 0);
+        } catch (PackageManager.NameNotFoundException ex) {
+            Log.w(TAG, "Unable to read package info.", ex);
+            return null;
+        }
+    }
+
+    private static long packageVersionCode(PackageInfo packageInfo) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+            return packageInfo.getLongVersionCode();
+        }
+        return packageInfo.versionCode;
+    }
+
+    private static String getOrCreateDeviceKey(Context context) {
+        SharedPreferences preferences = prefs(context);
+        String existing = preferences.getString(KEY_DEVICE_KEY, "");
+        if (!TextUtils.isEmpty(existing)) {
+            return existing;
+        }
+        String generated = UUID.randomUUID().toString();
+        preferences.edit().putString(KEY_DEVICE_KEY, generated).apply();
+        return generated;
+    }
+
+    private static String deviceModel() {
+        String manufacturer = Build.MANUFACTURER == null ? "" : Build.MANUFACTURER;
+        String model = Build.MODEL == null ? "" : Build.MODEL;
+        if (TextUtils.isEmpty(manufacturer)) {
+            return model;
+        }
+        if (TextUtils.isEmpty(model)) {
+            return manufacturer;
+        }
+        if (model.toLowerCase(Locale.US).startsWith(manufacturer.toLowerCase(Locale.US))) {
+            return model;
+        }
+        return manufacturer + " " + model;
+    }
+
+    private static String currentLocaleTag() {
+        Locale locale = Locale.getDefault();
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            return locale.toLanguageTag();
+        }
+        return locale.toString();
+    }
+
     static String eventAction(Context context) {
         return context.getPackageName() + ACTION_SUFFIX;
     }
diff --git a/src/ios/CDVBluememeUtils.m b/src/ios/CDVBluememeUtils.m
index b1b2401..1915845 100644
--- a/src/ios/CDVBluememeUtils.m
+++ b/src/ios/CDVBluememeUtils.m
@@ -5,6 +5,8 @@
 #import <NetworkExtension/NetworkExtension.h>
 #import <UIKit/UIKit.h>
 
+static NSString * const BluememeDeviceKeyDefaultsKey = @"bluememe_utils_device_key";
+
 @interface CDVBluememeUtils ()
 @property (nonatomic, copy) NSString *notificationCallbackId;
 @property (nonatomic, strong) NSDictionary *initialNotification;
@@ -36,6 +38,33 @@
     [self applyWifiCommand:command defaultJoinOnce:YES];
 }
 
+- (void)getDeviceInfo:(CDVInvokedUrlCommand *)command
+{
+    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
+    NSString *bundleIdentifier = [self safeString:[[NSBundle mainBundle] bundleIdentifier]];
+    NSString *appVersion = [self safeString:[infoDictionary objectForKey:@"CFBundleShortVersionString"]];
+    NSString *buildNumber = [self safeString:[infoDictionary objectForKey:@"CFBundleVersion"]];
+    UIDevice *device = [UIDevice currentDevice];
+    NSLocale *locale = [NSLocale currentLocale];
+    NSString *localeIdentifier = [self safeString:[locale localeIdentifier]];
+    NSString *timeZone = [self safeString:[[NSTimeZone localTimeZone] name]];
+
+    NSDictionary *result = @{
+        @"deviceKey": [self getOrCreateDeviceKey],
+        @"platform": @"iOS",
+        @"appIdentifier": bundleIdentifier,
+        @"appVersion": appVersion,
+        @"buildNumber": buildNumber,
+        @"osVersion": [self safeString:device.systemVersion],
+        @"systemName": [self safeString:device.systemName],
+        @"deviceModel": [self safeString:device.model],
+        @"model": [self safeString:device.model],
+        @"locale": localeIdentifier,
+        @"timeZone": timeZone
+    };
+    [self sendSuccessForCommand:command dictionary:result];
+}
+
 - (void)removeWifi:(CDVInvokedUrlCommand *)command
 {
     NSDictionary *options = [self firstDictionaryArgument:command];
@@ -446,6 +475,20 @@ didReceiveNotificationResponse:(UNNotificationResponse *)response
     return @"";
 }
 
+- (NSString *)safeString:(id)value
+{
+    if ([value isKindOfClass:[NSString class]]) {
+        return value;
+    }
+    if ([value respondsToSelector:@selector(stringValue)]) {
+        return [value stringValue];
+    }
+    if ([value respondsToSelector:@selector(description)]) {
+        return [value description];
+    }
+    return @"";
+}
+
 - (BOOL)boolFromDictionary:(NSDictionary *)dictionary key:(NSString *)key defaultValue:(BOOL)defaultValue
 {
     id value = dictionary[key];
@@ -473,6 +516,20 @@ didReceiveNotificationResponse:(UNNotificationResponse *)response
     return @"";
 }
 
+- (NSString *)getOrCreateDeviceKey
+{
+    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSString *existing = [defaults stringForKey:BluememeDeviceKeyDefaultsKey];
+    if (existing.length > 0) {
+        return existing;
+    }
+
+    NSString *generated = [[NSUUID UUID] UUIDString];
+    [defaults setObject:generated forKey:BluememeDeviceKeyDefaultsKey];
+    [defaults synchronize];
+    return generated;
+}
+
 - (void)sendSuccessForCommand:(CDVInvokedUrlCommand *)command dictionary:(NSDictionary *)dictionary
 {
     CDVPluginResult *result = dictionary == nil
diff --git a/www/BluememeUtils.js b/www/BluememeUtils.js
index 31237b5..5472296 100644
--- a/www/BluememeUtils.js
+++ b/www/BluememeUtils.js
@@ -45,6 +45,10 @@ function dispatchLocalEvent(event) {
 }
 
 var api = {
+    getDeviceInfo: function (success, error) {
+        call('getDeviceInfo', [], success, error);
+    },
+
     saveWifi: function (options, success, error) {
         call('saveWifi', [asWifiOptions(options)], success, error);
     },