Apple iPhone lovers must feel like proud owners of a device that boasts of so many features and applications. Besides listening to videos and music, you can video chat; click, edit and share photos. You can install more than 20,000 iPhone apps using the Apple App Store. Some of the applications are cool and amazing that come of use in every day’s life. Here’s alook at some iPhone 4 applications you must install.

How about an app that identifies and download a song for you? Yes, an app named Shazam does that when you point your iPhone to the speaker. Few mandatory apps you must have are Google Earth and Skype apps. Google Earth allows you to virtually fly around a 3D view of the world made from satellite and aerial imagery mapped onto the planet’s mountains and valleys.

With Skype on your iPhone, you can make and receive calls, and instant message anyone else on Skype, wherever they are in the world. With Tweetie app, you can tweet from your iPhone.

With an app named Universal Remote, you can control almost any devices through your iPhone. It acts, as the name implies, as a universal remote. iMovie app helps you edit 720p HD video that you’ve shot using your iPhone. Another app acts as a friend and guide for you. If you are new to a place or simply want to locate the nearest bank or mall, use the Around Me app. You can check the apps by browsing through the App Store in your iPhone.