> For the complete documentation index, see [llms.txt](https://uxper.gitbook.io/app-flutter/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://uxper.gitbook.io/app-flutter/faq-1/can-not-run-on-device-but-simulator-can-work-well.md).

# Can not run on device, but simulator can work well

```
Xcode's output: 
↳ 
note: Using new build system 
note: Building targets in parallel 
note: Planning build 
note: Constructing build description
error: Building for iOS Simulator, but the linked and embedded framework 'App.framework' was built for iOS. (in target 'Runner' from project 'Runner')

Could not build the application for the simulator.
Error launching application on iPhone 11.
```

#### **Condition** 

Xcode >= 11.4

#### Quick Solved

`rm -rf ios/Flutter/App.framework`

Run this command and run project again.

#### Official Solved

<https://flutter.dev/docs/development/ios-project-migration>

1. From the Flutter app directory, open ios/Runner.xcworkspace in Xcode.
2. In the Navigator pane, locate the Flutter group and remove App.framework and Flutter.framework. [![enter image description here](https://i.stack.imgur.com/WphmT.png)](https://i.stack.imgur.com/WphmT.png)
3. In the Runner target build settings Build Phases > Link Binary With Libraries confirm App.framework and Flutter.framework are no longer present. Also confirm in Build Phases > Embed Frameworks.

[![enter image description here](https://i.stack.imgur.com/e7gVy.png)](https://i.stack.imgur.com/e7gVy.png)

4\. Change the Runner target build settings Build Phases > Thin Binary script as follows:

> /bin/sh "$FLUTTER\_ROOT/packages/flutter\_tools/bin/xcode\_backend.sh" embed
>
> /bin/sh "$FLUTTER\_ROOT/packages/flutter\_tools/bin/xcode\_backend.sh" thin

[![enter image description here](https://i.stack.imgur.com/UVrtm.png)](https://i.stack.imgur.com/UVrtm.png)

5\. In the Runner target **Build Settings > Other Linker Flags**

(OTHER\_LDFLAGS) add $(inherited) -framework Flutter

[![enter image description here](https://i.stack.imgur.com/bVOva.png)](https://i.stack.imgur.com/bVOva.png)

Hope it helps!


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