Can a restrict my app to iPhone 3GS/iPhone 4?

I have an app which runs exc开发者_运维百科ellently on an iPhone 4, and comfortably on a 3GS. Is it possible to target only the 3GS/4 and not the 3G? The 3G just freaks out when I run it, all sorts of graphical glitches, crashing, low fps etc, I don't even want 3G users to see the app on the store. I can't really 'tone down' the app to use less memory/power for the 3G, it would remove the main purpose of the app.

The only way I have come up with is to adding multitasking as a requirement for the app in the info.plist, but this seems a little hacky.

Also, is this likely to get me in trouble as far as submission goes?

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Add "armv7" to the required device capabilities of your app's info.plist. Only the 3GS and newer use that CPU architecture. An app requiring armv7 won't even install on a 3G and other older armv6 devices.

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Looks like this has been addressed previously, you can determine the version and perform an appropriate action based on that.

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