Apple has released iPhone OS 4 in beta preview for iPhone Developers with paid account. But here is a little problem if you’re an iPhone 3G user. iPhone OS 4 works well on iPhone 3G and supports all the new features except for ‘Multitasking. It’s been said, “iPhone 3G has incompatible hardware to support Multitasking feature”.

If you’re an iPhone 3G user you will probably have to wait for some more time to experience multitasking. There’s a new iPhone coming up this summer. It would also mean iPhone developers who are creating apps based on this multitasking feature would serve only users with iPhone 3GS.

Your iPhone 3G will be getting the rest of the cool features offered by iPhone OS 4, like Wallpaper, Folders etc. Keep checking back this place to know more about what iPhone 3G & 3GS are getting in particular.

However, iPhone 3GS has full support for all the features that have been shown off at the preview event. You can refer to our earlier post to read more about all the features of iPhone OS 4 that Apple showed off in the preview event.