While previously the Android facebook client was a native app, it recently became a webview (it also got slower because of this). I'm pretty sure the iOS app is

While previously the Android facebook client was a native app, it recently became a webview (it also got slower because of this). I'm pretty sure the iOS app is also a webview now too. From the perspective of multi-mobile OS adoption, this makes sense. You now only need to develop a single webapp, and since you control the client apps, you can ensure 100% compatibility. While I don't think they'll try to cripple other phones, they'll most likely make new features a priority for the facebook phone.