A new rumour suggests Samsung might be taking the smartphone war to another level with the introduction of a 5.3-inch Android-based smartphone that may take its rivals by surprise.

The Samsung GT-i9220, in comparison to its 4.3-inch predecessor Samsung Galaxy S2, is rumored to arrive soon with a 5.3-inch display. The next-biggest competitor to the device is the 5-inch Dell Streak, which is an Android-based tablet.

The GT-i9220 is also expected to arrive with the first HD-ready screen that will use Samsung's Super AMOLED Plus HD technology at 1280x720 pixels. The aforementioned resolution would be higher than the resolution on the iPhone 4 (960x640). The pixel density of the forthcoming smartphone, however, is lower in comparison (277 ppi compared to 330 ppi).

Though nothing much is known about the device at the moment, the rumored specifications include a 1.4GHz dual core SoC, which may possibly be a Samsung Exynos model. An 8 MP rear camera and a front-facing camera whose specifications are part of the design are yet to be revealed.

The device will run on Android OS 2.3.4 or Gingerbread juice and at least 16GB of onboard storage with 1GB of RAM. If the rumored smartphone is real, then it may overtake Samsung Galaxy S2 as the best selling smartphone on the planet, and cause further problems for the upcoming iPhone 5, according to an ITProPortal report.

Apple’s iPhone 5 is expected to arrive sometime in October with an 8MP LED camera with 1080p video playback and panoramic photo capture capability. A larger display and Near Field Communication (NFC) facility is also expected. More RAM, possibly 1GB, is also expected and will arrive with an improved A5 processor. Dual-core SoCs are also awaited by few.