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When running an app for the first time from Xamarin Studio on an iOS 10.1 Simulator, I got the following message:
app name May Slow Down Your iPhone
The developer of this app needs to update it to improve its compatibility.
The app runs normally, and the message does not appear when I run it for the second time. How can I get rid of this message?
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You accidentally pressed the slow animation on debug when using simulator. So Run Simulator -> Debug -> Uncheck Slow Animation.
Install Apps on Simulators To install an app on a connected simulator, follow these steps. Go to Apps > Install Application. Find and open the app you want to install from your Mac. The app appears in the list of installed apps on the right side of the iOS Gateway window.
You can run iPhone Simulator on Windows by installing simulators as native applications on PC. For example, iPadian is a popular tool used by more than 1 million users (official statistics) to simulate Apple's operating system and give you a feel of the iPhone.
It turned out that the app was only built for the i386 architecture and not for the newer x86_64 one. After changing this in the build settings (to "i386 & x86_64", though I suppose "x86_64" would help as well) it didn't occur anymore.
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Ref: https://releases.xamarin.com/stable-release-cycle-8-service-release-0-w-xcode8-1-support/
[Xamarin Studio] – 45861 – “May Slow Down Your iPhone … The developer of this app needs to update it to improve its compatibility.” because of default “i386” supported architecture setting in the iPhoneSimulator configuration on new projects
Fix: Change Project options > iOS Build > Supported architectures to x86_64 (instead of the default i386) for the iPhoneSimulator configuration.
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