Apple's upcoming iPhone 5 has not yet been officially announced, but rumors emerged suggesting an early October release was likely. However, the arrival will not go unchallenged, thanks to players like Motorola's Droid Bionic, which is expected to be the biggest threat to the iPhone 5.

In the case of the iPhone 5, most of the features attributed to it are in the realm of rumors. But some features are more likely to be included in the phone than others. For sure, the iPhone 5 will feature the latest iOS 5 operating system, the A5 processor found in iPad 2, a higher megapixel camera compared to the iPhone 4 and a slimmer and thinner design.

Bloomberg reports that Apple's next version will have an 8-megapixel camera and 1080p video recording, along with dual-LED flash, and will closely resemble the iPhone 4. As leaked by Sony CEO Howard Stringer, the iPhone 5 may also carry an HD FaceTime camera, similar to those shipping with the current MacBook Pro lineup.

Meanwhile, the much anticipated Motorola Droid Bionic will finally be available starting Sept. 8, and will be powered by Android 2.3.4 Gingerbread OS. The phone is completely modified from the original one introduced during CES 2011. Finally, Motorola has delivered on a promise it made eight months ago.

Droid Bionic comes with a lot of the standard qualities which have made Droid a household name in smartphones. This includes a 4.3-inch HD screen with a Corning Gorilla scratch-free screen, two cameras: front-facing for video chat and 8-megapixel back camera, Adobe Flash preloaded, 32 GB of memory and a slim frame.

The smartphone also comes with Video Surf, a Shazam-like app for videos, Motoprint for wireless printing, NFL Mobile and support for Netflix.

The 4G phone introduces a host of groundbreaking applications and accessories that turn the device into a multimedia hub, a ruler of remote access and a purveyor of virtuality, the company said.

The phone has received rave reviews from tech journalists who had the opportunity to handle the device.

The Motorola Droid Bionic is everything you want from a high-end smartphone. It's sleek, fast, and powerful, with features that will please both consumers and business users--if you're willing to pay the high price, Cnet stated in its review. Cnet gave 4 stars out of 5.

The build quality is excellent, the software is clean and intuitive, and the addition of ZumoCast is terrific. The display, however, is a big disappointment. The overall speed of the Droid Bionic is almost enough to make up for that shortcoming, but the high price makes the phone a tough sell, said PCWorld, which also gave 4 stars out of 5 for the smartphone.

Here are the key reasons why Motorola Droid Bionic will beat Apple's next-generation iPhone:

4G LTE: Even though iPhone 5 may be titled as a 4G phone, it may not feature Verizon's 4G LTE support as the LTE chip price is too high to match Apple's cost-efficient measures and it contrasts with Apple planning to deliver a thinner and lighter device. Most probably, as AT&T HSPA+ network advances, there are chances of the iPhone 5 being activated with 4G in near future.

According to Verizon Wireless, it's the first phone to combine the 4G LTE network with a dual-core chip. So, that gives the Motorola Droid Bionic a huge advantage over the iPhone 5. The speed of the device may not matter for many users who use smartphones to check their email and browse lightweight Websites, but it does make a big difference when transmitting large files, booking tickets online, bill payment, viewing complex sites or streaming video.

Speed: The speed on the device depends on a number factors, including RAM, processor and the network on which the device will run.

Droid Bionic has received an upgraded RAM memory of 1GB of DDR2 from 512 MB RAM featured during the beginning of this year. And Droid Bionic also has 2 GB ROM support along with 1 GHz of dual core processor. And with LTE 4G, surely Droid Bionic can be up to the claim made by the Verizon ad, which describes it as ferocious force and an all powerful unstoppable device. Control it and you can control everything.

In contrast, iPhone 5 has a dual core processor but is doubtful to come with a better RAM capacity than that of Droid Bionic. And with 4G LTE option looming low, the iPhone 5 may not stand a chance against Motorola's flagship phone.

Open Source Advantage:

The entire Android OS is an open source system. The open-source movement has inspired increased transparency and liberty. It also constitutes an example of user innovation. Being made publically available enables anyone to copy, modify and redistribute the source code without paying royalties or fees. Anyone can get access to the source of Android to better the system. If there's an Android application out there, even if it's not in Google's official Android Market, you can download, install, and run it.

The iPhone is as proprietary as Apple can possibly make it. If you like what Apple wants to give you in the iPhone its good, but if you want more than what Apple wants to offer you, you're out of luck.

Processor:  Those who unboxed and reviewed the Bionic found that the phone has dual core 1GHz TI's OMAP 4 chipset processor.

According to Engadget Texas Instruments' OMAP 4430, NVIDIA's Tegra 2 and Samsung's Exynos 4210 went head to head in a gauntlet of browser and graphical benchmarks, and it looks like the LG Optimus 3D's OMAP 4 came out on top, boasting of minor but significant improvements practically across the board.

Clearly Motorola boasts of a powerful processor. However, iPad 2's dual-core ARM Cortex-A9 CPU A5 processor, which is expected to make it into iPhone, 5 clocks at 1 GHz. With iPhone 5 being powered by a processor found in tablet, it almost equals Motorola Droid Bionic.

Flash: This is a big advantage an Android systems holds against iPhone. Flash enriches Web experience. Any Flash player has to be able to animate on top of video renderings, which makes hardware accelerated video rendering at least not as straightforward as with a purpose-built multimedia player. Therefore, even when only displaying video, Flash players are more resource-intensive than dedicated video player software. Presently for Apple only Mac OS 9/X supports flash. As Droid Bionic comes with Android OS, it enjoys the full support of flash.

Screen: Motorola Droid Bionic has qHD (540 x 960 pixels, 256 ppi pixel density) TFT display for its 4.3-inch screen. It has the privilege of featuring a movie-friendly 16:9 aspect ratio. The iPhone 5 is expected to come with a teardrop design with an aluminum plate casing that is supposed to be slimmer and lighter than past iPhone models, mostly featuring a 3.7-inch or 4-inch screen.

Watch a video on a 3.7-inch screen and then watch one on a 4.3-inch screen. It just isn't the same. The 4.3-inch display gives you a much better experience. If we are speaking about pure size and shape here, Motorola Droid Bionic easily wins, provided one values clarity over compactness. At 4.3 inches, the Droid Bionic's display dwarfs the upcoming iPhone 5.

The iPhone has the superior all-round picture with its sharpness and clarity at all angles due to its smaller display size. However, the Droid Bionic wins out for sheer size. Besides, it has a movie-friendly 16:9 aspect ratio.