By Michael Oleaga (staff@latinospost.com) | First Posted: Aug 20, 2012 09:18 AM EDT

Samsung has become the best-selling device company in mobile history, but it hasn't faced high expectations of the upcoming Apple iPhone 5.

The latest iPhone device is expected to be "the biggest handset launch in history," according to Jefferies analyst Peter Misek.

On a research note dated on Aug. 17, Jefferies has speculated that 15 million iPhone 5 handsets are in inventory for the rumored Sept. 12 launch. The launch is also rumored to coincide with the iPad Mini.

But in the hiatus leading up to the iPhone 5 release, as eWeek noted, Samsung has benefited from the wait with the Galaxy S3 in May.

For the month of July, the Samsung Galaxy S3 has sold more than 10 million units, strengthening the South Korean company's lead as the world's top-selling phone and smartphone maker.

Galaxy S3 runs with the Android 4.0.4 - also known as the Ice Cream Sandwich, with a 1.5GHz dual-core Snapdragon S4 processor, 2GB RAM, Super AMOLED HD display with 720p resolution, and the ability to capture 1080p HD video.

To further lure customers to the Galaxy S3 ahead of the iPhone 5 release, Samsung is reportedly to launch the Jelly Bean update. The Jelly Bean is a new mobile operating system with faster and improved features compared to the Ice Cream Sandwich

The iPhone 5 is rumored is feature a larger battery to last up to eight hours on 3G and 14 hours on 2G, and the addition of Long Term Evolution (LTE). The battery life is expected to have a capacity of 1140 mAh, 10 more than the iPhone 4S' 1430mAh and the iPhone 4's 1420mAh.

The battery life is low compared to the Galaxy S3, with a battery life of 2100mAh. Pop Herald suggests that due to the lower battery life compared to the Galaxy S3, the iPhone 5 will have a smaller display than a traditional Android display of 3.9-inch to 4.3-inch. Display size matter as a smaller display takes less battery use.

Other rumored features of the iPhone 5 is Near Field Communication (NFC), new cameras, processor, and wireless charging,

"We believe Apple's product leadership, vertical integration and vast scale mean that it will receive the lion's share of the economic benefit from the three biggest multi-year trends in technology: smartphones, 4G, and tablets," said Misek.

Dwayne Madden of Auto-o-Mobile stated, "While the iPhone 5 may be a huge hit with Apple fans, it is not expected to be better than the S3 in terms of hardware or software, but merely matching it. Given that I am not partial to either OS, I jumped on a Verizon Samsung Galaxy S3 last week already and haven't regretted it... yet."

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