diff --git a/.gitignore b/.gitignore
index 4c70518..17c0893 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,14 +1,114 @@
-# See https://www.dartlang.org/guides/libraries/private-files
+# Miscellaneous
+*.class
+*.lock
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
 
-# Files and directories created by pub
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# Visual Studio Code related
+.classpath
+.project
+.settings/
+.vscode/
+
+# Flutter repo-specific
+/bin/cache/
+/bin/mingit/
+/dev/benchmarks/mega_gallery/
+/dev/bots/.recipe_deps
+/dev/bots/android_tools/
+/dev/docs/doc/
+/dev/docs/flutter.docs.zip
+/dev/docs/lib/
+/dev/docs/pubspec.yaml
+/dev/integration_tests/**/xcuserdata
+/dev/integration_tests/**/Pods
+/packages/flutter/coverage/
+version
+
+# packages file containing multi-root paths
+.packages.generated
+
+# Flutter/Dart/Pub related
+**/doc/api/
 .dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
 .packages
+.pub-cache/
 .pub/
 build/
-# If you're building an application, you may want to check-in your pubspec.lock
-pubspec.lock
+flutter_*.png
+linked_*.ds
+unlinked.ds
+unlinked_spec.ds
 
-# Directory created by dartdoc
-# If you don't generate documentation locally you can remove this line.
-doc/api/
-.idea
+# Android related
+**/android/**/gradle-wrapper.jar
+**/android/.gradle
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/local.properties
+**/android/**/GeneratedPluginRegistrant.java
+**/android/key.properties
+*.jks
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# macOS
+**/macos/Flutter/GeneratedPluginRegistrant.swift
+**/macos/Flutter/Flutter-Debug.xcconfig
+**/macos/Flutter/Flutter-Release.xcconfig
+**/macos/Flutter/Flutter-Profile.xcconfig
+
+# Coverage
+coverage/
+
+# Symbols
+app.*.symbols
+
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+!/dev/ci/**/Gemfile.lock
\ No newline at end of file
diff --git a/lib/src/flutter_sms_platform.dart b/lib/src/flutter_sms_platform.dart
index 8715128..9dd7563 100644
--- a/lib/src/flutter_sms_platform.dart
+++ b/lib/src/flutter_sms_platform.dart
@@ -1,11 +1,11 @@
 import 'dart:async';
 import 'dart:io';
-import 'dart:html' as html;
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
 import 'package:url_launcher/url_launcher.dart';
+import 'package:flutter_user_agent/flutter_user_agent.dart';
 
 const MethodChannel _channel = MethodChannel('flutter_sms');
 
@@ -87,7 +87,7 @@ class FlutterSmsPlatform extends PlatformInterface {
         'iPod',
         'Mac OS X',
       ];
-      final _agent = html.window.navigator.userAgent;
+      final String _agent = FlutterUserAgent.webViewUserAgent;
       for (final device in _devices) {
         if (_agent.contains(device)) {
           return true;
diff --git a/pubspec.yaml b/pubspec.yaml
index 6db7cc7..daa7cab 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -16,6 +16,7 @@ dependencies:
   flutter_web_plugins:
     sdk: flutter
   plugin_platform_interface: ^1.0.1
+  flutter_user_agent: ^1.2.2
 
 dev_dependencies:
   flutter_test: