Considering that one big rival of the iPhone 4S will be the Motorola Droid Bionic, it will be interesting to compare the features of the two competitors.

The iPhone 4S weighs 140g, has a 420 mAh battery, with 8 hours of talk time on 3G and up to 14 hours on 2G networks (GSM). The Motorola Droid Bionic, weighing 158.8g, has a standard 1735 mAh battery offering talk time of 650 minutes and standby time of 200 hours.

Motorola Droid Bionic runs on the Android 2.3.4 Gingerbread OS. The iPhone 4S is loaded with the latest Apple operating system iOS 5, which brings over 200 new features to the iPhone.

The iPhone 4S will have a 3.5-inch TFT Retina multi-touch display, with 960x640 resolutions at 330 ppi pixel density. The Motorola Droid Bionic has a 4.3-inch qHD screen that should give a resolution of 960x540-pixel at 256 ppi pixel density.

The Motorola Droid Bionic has an 8-megapixel auto-focus camera with 3264×2448 pixels, autofocus and dual LED flash, as well as a front-facing camera for video chats. The camera can shoot HD videos of up to 1080p. The iPhone 4S also comes with an 8-megapixel, 3264×2448 pixels, autofocus, LED flash camera in the front. It features a VGA front-facing camera. The camera can also shoot HD videos of up to 1080p.

Motorola Droid Bionic comes with a dual-core 1GHz ARM Cortex-A9 processor, ULP GeForce GPU and Tegra 2 AP20H chipset. The iPhone 4S features 1GHz dual-core ARM Cortex-A9 processor, PowerVR SGX543MP2 GPU and an Apple A5 chipset.

The iPhone 4S comes in 16GB, 32GB and 64GB models. It doesn't support a MicroSD card slot. The Motorola Droid Bionic has 16GB internal storage and another 16GB microSD card preinstalled, which can be expanded to 32 GB.

The iPhone 4S costs $199 for the 16GB model, $299 for the 32GB model and $399 for the 64GB model. The Motorola Droid Bionic is priced at $299 with a two-year contract from Verizon.

The next few months should see the competition between the iPhone 4S and the Droid Bionic intensifying.

Must Read: iPhone 4S Sold Out: Pre-order Record in Memory of Steve Jobs?

Must Read : iPhone 4S Buyers Could be Opting For a Steve Jobs Keepsake
Must Read : iPhone 4S: Should You Buy iPhone 4S or Wait for iPhone 5?
Must Read : iPhone 4S Sets New Pre-order Record: Top 10 Reasons Why You Should Get One (PHOTOS)

Must Read: iPhone 5 With 4G LTE: What is Hidden in Sprint's 2012 4G Network Rollout?