Rumors indicate that Nokia will be unveiling two Windows Phone 8 handsets on Sept. 5 at its Nokia World event. One model will be called Nokia Phi and the other model is currently codenamed Nokia Arrow.

Recently, a leaked picture of a frame, for an upcoming Windows Phone 8 device, surfaced on the Internet. This device was believed to be Nokia's next-gen smartphone. Now, Russian blogger Eldar Murtazin has provided a few extra details regarding the Nokia Phi, reports Pocket-Lint.

Murtazin reckons that the Phi will have a curved 4.7-inch AMOLED display, which will be the biggest Nokia screen to date. The device will be thinner than the Nokia Lumia 800 and Lumia 900. The slenderness of the device will in turn end up compromising the battery of the smartphone and just a single day of usage is expected. The device will also have a microSD card slot that can be accessed through the polycarbonate unibody. It is rumored that the Phi will support LTE connectivity and be NFC enabled.

Reports suggest that Nokia's flagship model for 2012 - Nokia Phi - will be initially exclusive to AT&T and the mid-ranged Nokia Arrow will be available on both AT&T and T-Mobile in the U.S.

Fact or fiction, consumers will have to wait for a fortnight for Nokia's next smartphones to be released. Nokia rules over the Windows smartphone market share, but is that enough? Popular smartphone makers like Samsung, Apple, and HTC are all expected to launch their new smartphones soon. Time will tell if Nokia's can pull out a few rabbits from its hat and stun rivals.