Apple’s new iPhone OS gets a new name, iOS 4. Why, because it supports more than just the iPhone. The iPad and iPod touch use iOS to.
iOS 4 comes with many new features, one long-awaited feature is multi-tasking. I am going to explain 13 of the most important updates to iOS 4.

Features:

1. Multi-tasking has finally come to your iPhone. Apple say’s they have built an all-together new way of multi-tasking that won’t drain your battery life. To multi-task you have to double-click the Home button and a small bar will pop-up from the bottom displaying all your running Apps. What’s even cooler is that if you have an App that play’s music or the radio it will keep playing working without stopping, and in the multitask bar a music controls show up letting you pause, play, forward, and rewind!

2.Folder’s is a feature that lets you organize your apps into small folders, up to 9 apps per folder. All you have to is to keep touching an App until it starts to jiggle, then drag it onto the App you want to make a folder with, then keep dragging all the wanted Apps into that folder. The folder automatically names it  depending on the types of Apps in it, and you can also change the name to your likings.

3. Mail is redesigned in a whole new way. You can view all your mail in a unified inbox, organize messages by thread, and open attachments in third-party apps. Apple has also tweaked the User Interface a little bit.

4.iBooks has now come to an iPhone or iPod touch near you! So you can now read iBooks on your iPhone or iTouch. Apple has updated it to read PDF’s too. And of course there is the iBooks store to buy and download new books right on your phone. And you can sync the book between iOS devices for free and pick up exactly where you left off.

5.You can now create playlists directly on your iOS device without having to sync with your computer, directly through your iPod App.

6.5x zoom. Your can now zoom into your subjects with your iPhone, by up to 5x zoom!

7.When OS 3.0 came out Apple released a feature called Tap-to Focus when taking a picture. Now Apple has updated the feature so you can also Tap-to-Focus while taking video.

8.Faces and Places are now built into the photo’s app. You can Geo-Tag your photo’s depending on where you took them. You can also organize photos by the people in them.

9.Now you can add a wallpaper to your home screen, instead of the normal black background.

10.Now you have the ability gift Apps to family, friends, or whoever you want to gift an App to.

11.Spell checking is now built into many more Apps.

12. Now, with a Bluetooth keyboard, you can connect it to your iPhone and write messages with the Bluetooth keyboard.

13. The last feature might not be a thing you really want, but it will be really helpful to App developers, and this is iAds. Apple is now letting App developers add in this feature for free and the developer makes 60% of the Ad revenues. Apple, or Steve Jobs says that this to help developers keep their App at a low price.

Compatibility and Pricing:

iOS 4 will work, with all features on the iPhone 4, 3GS, iTouch 3rd Gen, and iPad. Sadly iPad owners have to wait till this fall to get this update for the iPad. The iPhone 3G and iTouch 2nd Gen will have most of the features except for example multi-tasking. The original iPhone and iTouch will not be able to support iOS 4.

This time Apple is giving iOS 4 free to all users, even iPod Touch and the iPad on this June 25th.

Hope you all learned a bit from this post. Please comment and keep on the lookout for new posts