[SOLVED] flutter: Authentication failed -ERROR: Invalid token.. Try again later

[yendiscart]

Firebase Phone Auth is working in simulator and not working in real device.

already i created an apn key in developer.apple.com and add that in firebase and enabled background mode and check fetch, process and background.

GTMSessionFetcher invoking fetch callbacks, data {length = 252, bytes = 0x7b0a2020 22657272 6f72223a 207b0a20 ... 5d0a2020 7d0a7d0a }, error Error Domain=com.google.HTTPStatus Code=400 "(null)" UserInfo={data={length = 252, bytes = 0x7b0a2020 22657272 6f72223a 207b0a20 ... 5d0a2020 7d0a7d0a }, data_content_type=application/json; charset=UTF-8}
flutter: Authentication failed -ERROR: Invalid token.. Try again later.

flutter doctor -v
[✓] Flutter (Channel stable, 2.5.2, on macOS 11.6.1 20G224 darwin-x64, locale en-US)
• Flutter version 2.5.2 at /Users/mac/Developer/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 3595343e20 (5 weeks ago), 2021-09-30 12:58:18 -0700
• Engine revision 6ac856380f
• Dart version 2.14.3

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
• Android SDK at /Users/mac/Library/Android/sdk
• Platform android-31, build-tools 31.0.0
• ANDROID_HOME = /Users/mac/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 13.0, Build version 13A233
• CocoaPods version 1.11.2

[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.2)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)

[✓] VS Code (version 1.62.0)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.28.0

[✓] Connected device (3 available)
• Device (mobile) • 00008030-001E65403A99802E • ios • iOS 15.1 19B74
• macOS (desktop) • macos • darwin-x64 • macOS 11.6.1 20G224 darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 95.0.4638.69

• No issues found!

[yendiscart]

Solved issue by uploading APN KEY to firebase.