As Google just released the Android 4.0, Ice Cream Sandwich along withthe new Samsung Galaxy Nexus, the Apple's iOS 5 and the new iPhone 4S got some new competition. Obviously, people would like to see the comparison between the two systems. Now here we go:

ICS offers a host of new features, including improved voice commands, an enhanced browser, facial recognition, photo enhancements, and changes to core apps such as Gmail and Calendar. The Galaxy Nexus hardware boasts a 4.65-inch Super AMOLED display with 1280-by-720-pixel resolution, a 1.2GHz dual-core processor, a near-field communication chip, a 5-megapixel rear-facing camera, and a 1.3-megapixel front-facing camera.Ice Cream Sandwich on the Galaxy Nexus will launch in November; pricing has not been announced.

iOS 5 includes over 200 new features including: Notification Center, an innovative way to easily view and manage notifications in one place without interruption; iMessage, a new messaging service that lets you easily send text messages, photos and videos between all iOS devices; and Newsstand, a new way to purchase and organize your newspaper and magazine subscriptions. With the new PC Free feature, iOS 5 users can activate and set up their iOS device right out of the box and get software updates over the air with no computer required.

Since ICS is now on its way, and Apple's iOS 5 and the iPhone 4S were released recently, prospective smartphone buyers can choose between the new versions of the two leading smartphone brands. And the differences between the two are many: Do you want deep voice-command integration with the iPhone 4S's Siri digital assistant, or will Voice Actions for Android be enough for you? Do you want to take a lot of panoramic shots, or do you prefer a solid camera without too many features?

Before you decide whether to land in the iOS camp or the Android camp in the coming weeks, here's a look at the highlights of the new versions of both operating systems.

Camera

Apple and Google have made improvements to their respective camera software, and both operating systems now offer users the ability to access the phone's camera from the lock screen. Apple also added to iOS 5 the ability to use grid lines to line up your shot, as well as pinch-to-zoom.

Google's Ice Cream Sandwich has a new panoramic mode that stitches together multiple snapshots to create a larger scene. ICS's new panoramic mode includes a slider at the bottom of the screen to help you align the series of shots. The panoramic shot above was posted to Google+ by Google employee Matt Cutts. The photo was taken at Yosemite National Park using a Nexus S running ICS.

Photo Improvements

Once you're done taking photos, both ICS and iOS 5 have baked-in tools to help you improve your pictures, allowing you to crop and rotate, remove red-eye, and auto-enhance. ICS will also let you set levels and add Instagram-style filters.