The LG Optimus 2X is the first Android phone with 1GHz dual-core processor offering a performance improvement over the smartphones powered by 1GHz single core phones.

In terms of price it makes a better deal than the HTC Incredible S, the Samsung Nexus S and the Sony Ericsson siblings the Arc and the Play.

The 4.0-inch screen phone with a Gorilla Glass display comes with Android 2.2, with a promised update for Android 2.3 soon.

Samsung Galaxy S II which runs Android 2.3 could give a tough competition to Optimus 2X . However, LG has done well in making the UI look snazzier than before. The widgets look more in line with the HTC Sense, which is a sort of benchmark as far as Android UI’s are concerned.

While flicking between the multiple screens on this UI, it was hard to miss the effort LG has put in to make more vibrant. The widgets have a variety and are better too.

HTC Sensation is also powered by a 1.2 GHz dual core processor running on the latest Android 2.3.2 (Gingerbread) with the new HTC Sense 3.0 UI, which features a huge 4.3” qHD display at a resolution of 540 x 960 pixels using Super LCD technology.

Optimus 2X also sports an 8MP camera which can record 1080p HD videos @ 24fps. The phone comes with 8GB built-in storage, and will hold up to 32GB in a microSD card. The 4.0-inch display is the IPS LCD type with a resolution of 480 x 800 pixels.

However, the pictures and videos taken in dim light will have grainy effect on it like most other smartphone cameras.

The dual-core processor was feared to reduce the battery life but LG flaunts a powerhouse that it says lasts for 2 days from full charge to full discharge.