iPhone 4 the most awaited cell phone is available in the stores now. It is 9.3 mm thick, has 5X zoom and supports 4G. The new phone comes with Apple’s new Operating System called IOS4.this OS will not only power the iPhone4 but will also support its installation on 3GS,ans 3G phones. It can also be installed on iPod with limited features.
There are many cool features added to the iPhone4. Let’s unveil some of them here:
Camera

Has 5 Megapixel Camera with a 5X digital zoom. User needs to tap on the screen to zoom or focus. Photos can be rotated or resized by just a movement of finger. Camera supports landscape mode and photos can be categorized. Now user can select multiple photos for mass deletion.

Home Screen

Users will get the ability to categorise applications into folders of their choice. Can set custom background for home screen and lock screen. Earlier version supported upto 180 visible apps but with iPhone 4 the number has gone high to 2160.

Music

Playlist creation and nested playlists is possible now. Volume control for Bluetooth headsets is available on the home screen
Notes, Calendar and Calculator
Notes syncing with MobileMe, Gmail IMAP and Yahoo Mail is possible. If syncing is enabled users get notes settings option below Mail, Contacts, and Calendar Settings.
Contacts and Messages
Streamlined new contact screen. The phone now includes a Search bar for searching messages. iPhone 4 gives character count while typing messages, failed messages notification. It has option to toggle OFF the ability to send group messages and has larger fonts in Mail, SMS and alerts.

WEB

It gives you the recent searches below search field along with top Hit in search. Google suggest appears below search field if search engine is set to Google. It support in-page video playback. It includes the advanced safari browser which supports HTML5 and offline data storage features. Online videos can be rotated and zoomed.

Email

It has unified inboxes. Mails can be edited from Outbox. Display contact pictures along with emails, organize messages by threads and even open attachment in third party applications. It supports multiple exchange accounts, supports exchange Server 2010.

Other features

IPhone4 has Search with Web or Wikipedia enabled, HTTP Live streaming. Includes Bing Search, and has two cameras for video calling. iPhone’s Operating System includes APIs to alert you to many standard gestures and you can even hand code some gestures on your phone. It has a support for Apple Bluetooth Keyboards. This new version allows background music playback, so  you can listen to your favourite music while working on various applications. Copy/Paste operation has been very simplified and the clipboard can be used just by double clicking on any text.
Apple claims that we have done a lot of research in making iPhone4 a feature rich and easy to use phone. They say that this is the biggest thing happening to iPhone since iPhone.
This device is coming in two models; 16 GB iPhone for $199 and a 32 GB iPhone for $299.