Test iOS apps in the simulator changeddesktop-ios-simulator
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### Minimize or close the simulator pane
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6060When the app launches in a simulator, the iOS Simulator pane opens next to the conversation. The first time Claude uses a device, the desktop app asks you to allow it; see [Grant Claude access to a device](#grant-claude-access-to-a-device). Claude installs the app, taps through it, and reads the screen to verify its own changes while you watch.
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62The simulator pane opens whenever Claude launches the app in a simulator, at any point in the session. When your request is about seeing the app, for example "does the new screen look right?", Claude starts a simulator before it begins the work. After Claude fixes a bug or changes a screen, ask it to verify the change: relaunching the app reopens the pane if it isn't open.
62When your request is about seeing the app, for example "does the new screen look right?", Claude starts a simulator before it begins the work. After Claude fixes a bug or changes a screen, ask it to verify the change.
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6464The simulator pane shows whichever device the app actually launched in. To test on a specific device, name it in your request, for example "run it on the iPhone SE simulator", and Claude targets that device when it builds and launches.
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8181If the pane shows a **Display** menu, use it to tune the video stream from the simulator. Lower **Frame rate** or **Resolution** if the pane strains your Mac. Both settings change how the pane displays the device, not how the app runs.
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8383You and Claude drive the same device, so your taps change the app state Claude sees. To have Claude check a specific screen, tap through to it, then ask. While Claude is driving the device, the pane shows a **Claude is using this device** badge above the screen; hold off tapping until the badge clears, so the result reflects the app rather than your input.
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85### Minimize or close the simulator pane
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87You can minimize or close the simulator pane, and Claude can still use the device either way.
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89* If you minimize the pane, the device stays in view at a small size. To minimize the pane or expand it again, see [Minimize a pane](https://code.claude.com/docs/en/desktop.md#minimize-a-pane).
90* If you close the full-size or minimized pane, the device stays attached and running. To show the device again, click **iOS Simulator** in the session's title bar.
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8592## How sessions manage devices
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