[BUG] Maui.Camera not working on iPhone 17 (Pro and ProMax at least)

[DodoTheDuck]

Is there an existing issue for this?

• I have searched the existing issues

Did you read the "Reporting a bug" section on Contributing file?

• I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

Current Behavior

Maui.Camera delivers a grey preview picture (bug 1)
Taking a picture is not working (bug 2)

Expected Behavior

Taking a picture works, as it does on every other device

Steps To Reproduce

1. Use Maui.Camera (reproduced on 4.0.0 and 5.0.0)
2. Look at the previewcontrol of the camera (bug 1)
3. Take a picture using CameraView.CaptureImage (bug2)

Link to public reproduction project repository

https://github.com/DodoTheDuck/CTMauiCameraProblem

Environment

- .NET MAUI CommunityToolkit: 13.0.0
- OS: Windows for Deployment, iOS 26.2 to reproduce
- .NET MAUI: workload version 10.0.1 (installation source SDK 10.0.100)

Anything else?

I caught the following error in my app:

Objective-C exception thrown. Name: NSInvalidArgumentException Reason: *** -[AVCapturePhotoOutput capturePhotoWithSettings:delegate:] No active and enabled video connection
Native stack trace:
0 CoreFoundation 0x0000000195602970 0BE54DBE-1ADC-3588-BFFA-E7C99E8D8208 + 809328
1 libobjc.A.dylib 0x00000001924f1814 objc_exception_throw + 88
2 AVFCapture 0x00000001bbb46274 758D6CE7-543C-309E-B569-3E79A971AA9B + 967284
3 CodexApp 0x00000001088d2870 xamarin_log + 7428
4 CodexApp 0x0000000103bdcb98 CodexApp + 14912408
5 CodexApp 0x000000010882fa38 CodexApp + 94943800
6 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
7 CodexApp 0x0000000105244fdc CodexApp + 38408156
8 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
9 CodexApp 0x0000000105240964 CodexApp + 38390116
10 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
11 CodexApp 0x0000000104c10fc8 CodexApp + 31903688
12 CodexApp 0x000000010855d2f0 CodexApp + 91984624
13 CodexApp 0x0000000108544084 CodexApp + 91881604
14 CodexApp 0x000000010852c49c CodexApp + 91784348
15 CodexApp 0x0000000108a3f740 BrotliEncoderHasMoreOutput + 1140240
16 CodexApp 0x00000001089f0090 BrotliEncoderHasMoreOutput + 814944
17 CodexApp 0x0000000108a00608 BrotliEncoderHasMoreOutput + 881880
18 libsystem_pthread.dylib 0x00000001f1e2344c _pthread_start + 136
19 libsystem_pthread.dylib 0x00000001f1e1f8cc thread_start + 8

at AVFoundation.AVCapturePhotoOutput.CapturePhoto(AVCapturePhotoSettings , IAVCapturePhotoCaptureDelegate )
at CommunityToolkit.Maui.Core.CameraManager.d__45.MoveNext()
at CommunityToolkit.Maui.Views.CameraView.CaptureImage(CancellationToken token)
at CodexApp.View.Kamera.FastCamera.CaptureAndProcessImageAsync()
ObjCRuntime.ObjCException: Objective-C exception thrown. Name: NSInvalidArgumentException Reason: *** -[AVCapturePhotoOutput capturePhotoWithSettings:delegate:] No active and enabled video connection
Native stack trace:
0 CoreFoundation 0x0000000195602970 0BE54DBE-1ADC-3588-BFFA-E7C99E8D8208 + 809328
1 libobjc.A.dylib 0x00000001924f1814 objc_exception_throw + 88
2 AVFCapture 0x00000001bbb46274 758D6CE7-543C-309E-B569-3E79A971AA9B + 967284
3 CodexApp 0x00000001088d2870 xamarin_log + 7428
4 CodexApp 0x0000000103bdcb98 CodexApp + 14912408
5 CodexApp 0x000000010882fa38 CodexApp + 94943800
6 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
7 CodexApp 0x0000000105244fdc CodexApp + 38408156
8 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
9 CodexApp 0x0000000105240964 CodexApp + 38390116
10 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
11 CodexApp 0x0000000104c10fc8 CodexApp + 31903688
12 CodexApp 0x000000010855d2f0 CodexApp + 91984624
13 CodexApp 0x0000000108544084 CodexApp + 91881604
14 CodexApp 0x000000010852c49c CodexApp + 91784348
15 CodexApp 0x0000000108a3f740 BrotliEncoderHasMoreOutput + 1140240
16 CodexApp 0x00000001089f0090 BrotliEncoderHasMoreOutput + 814944
17 CodexApp 0x0000000108a00608 BrotliEncoderHasMoreOutput + 881880
18 libsystem_pthread.dylib 0x00000001f1e2344c _pthread_start + 136
19 libsystem_pthread.dylib 0x00000001f1e1f8cc thread_start + 8

at AVFoundation.AVCapturePhotoOutput.CapturePhoto(AVCapturePhotoSettings , IAVCapturePhotoCaptureDelegate )
at CommunityToolkit.Maui.Core.CameraManager.d__45.MoveNext()
at CommunityToolkit.Maui.Views.CameraView.CaptureImage(CancellationToken token)
at CodexApp.View.Kamera.FastCamera.CaptureAndProcessImageAsync()
Native stack trace:
0 CoreFoundation 0x0000000195602970 0BE54DBE-1ADC-3588-BFFA-E7C99E8D8208 + 809328
1 libobjc.A.dylib 0x00000001924f1814 objc_exception_throw + 88
2 AVFCapture 0x00000001bbb46274 758D6CE7-543C-309E-B569-3E79A971AA9B + 967284
3 CodexApp 0x00000001088d2870 xamarin_log + 7428
4 CodexApp 0x0000000103bdcb98 CodexApp + 14912408
5 CodexApp 0x000000010882fa38 CodexApp + 94943800
6 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
7 CodexApp 0x0000000105244fdc CodexApp + 38408156
8 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
9 CodexApp 0x0000000105240964 CodexApp + 38390116
10 CodexApp 0x0000000103ae7bf4 CodexApp + 13908980
11 CodexApp 0x0000000104c10fc8 CodexApp + 31903688
12 CodexApp 0x000000010855d2f0 CodexApp + 91984624
13 CodexApp 0x0000000108544084 CodexApp + 91881604
14 CodexApp 0x000000010852c49c CodexApp + 91784348
15 CodexApp 0x0000000108a3f740 BrotliEncoderHasMoreOutput + 1140240
16 CodexApp 0x00000001089f0090 BrotliEncoderHasMoreOutput + 814944
17 CodexApp 0x0000000108a00608 BrotliEncoderHasMoreOutput + 881880
18 libsystem_pthread.dylib 0x00000001f1e2344c _pthread_start + 136
19 libsystem_pthread.dylib 0x00000001f1e1f8cc thread_start + 8

[mduchev-racebox]

I have the same problems

[phunkeler]

Hi @DodoTheDuck, the issue has previously been identified in #2920 and fixed by #2941, but isn't released yet.

In the meantime, you may be able to workaround this issue by explicitly setting a resolution to avoid the automatic selection of problematic high-res formats.

<!-- Camera Preview -->
<camera:CameraView x:Name="cameraView"
    Grid.Row="0"
    CameraFlashMode="Off"
    MediaCaptured="OnMediaCaptured">
    <camera:CameraView.ImageCaptureResolution>
        <OnPlatform x:TypeArguments="Size">
            <On Platform="iOS" Value="3000,4000" />
        </OnPlatform>
    </camera:CameraView.ImageCaptureResolution>
</camera:CameraView>

iPhone 17 Pro (iOS 26.2)