LG announced its first quad-core smartphone on 23 February. The LG Optimus 4X HD is scheduled to hit the Europe smartphone markets in the second quarter of the year and with the combined performance of NVIDIA's latest 1.5GHz Tegra 3 and HD IPS display, the LG Optimus 4X HD is expected to deliver PC-like performance. Reports suggest the LG Optimus 4X HD is world's first smartphone to be equipped with a quad-core processor.

Samsung introduced its next-gen Galaxy smartphone - the Galaxy S3 - on 3 May. The smartphone will hit UK markets on 30 May and the US later this summer. Although the company has not announced pricing details, it has confirmed the smartphone will go on sale with 296 carriers in 145 countries. The smartphone will connect at 4G speeds in compatible countries. The smartphone offers Near Field Communication (NFC) technology and is equipped with an interesting feature, a Siri-like voice-activated personal assistant called S Voice.

Check out how the two Android smartphones do against each other

Display: LG's phone will feature a 4.7in HD IPS LCD capacitive touchscreen which will have a resolution of 720x1280 pixels. Samsung's third generation Galaxy features a 4.8in HD Super AMOLED display, with a resolution of 720x1280 pixels. The Galaxy S3, according to Samsung, provides an ergonomic and comfortable user experience, through what the manufacturer calls a human-centric design process.

Dimensions: The LG Optimus 4X HD is 8.9mm thick and weighs 158.75g. The Galaxy S3 measures 136.6x70.6x8.6mm and weighs less than the LG Optimus 4X HD at 133g.

Operating System: Both smartphones will run on Android 4.0 (Ice Cream Sandwich)

Processor: The LG will be powered by a 1.5GHz quad-core Nvidia Tegra 3 processor and will pack 1GB of RAM. The Samsung Galaxy S3 will be powered by a 1.4 GHz Exynos 4 quad-core processor with twice the processing capabilities of the 45nm process-based Exynos 4 dual-core processor. A test conducted by Slashgear suggested the quad-core Exynos process was powerful and capable enough of taking on its market rivals. The S3 has 1GB of RAM.

Camera: The LG has an eight megapixel BSI sensor camera and a secondary front-facing 1.3 megapixel camera. The Galaxy S3 will sport a primary camera of eight megapixels with auto-focus and LED flash. The camera also has a technology called Zero-Lag Shutter Speed that allows users to capture moving objects. The smartphone also features a 1.9 megapixel front-facing camera which can record HD videos at 30 frames per second. The Galaxy S3 also has a feature called Burst Shot, which allows users to capture 20 continuous frames.

Connectivity: The LG Optimus 4X HD will offer 3G connectivity and Bluetooth version 4.0. The Galaxy S3 offers Wi-Fi a/b/g/n, Wi-Fi HT40 and Bluetooth version 4.0, as well as Near Field Communication (NFC).

Storage: The LG Optimus has internal memory storage space of 16GB and it supports a microSD card. The Galaxy S3 offers three internal memory storage options of 16/32/64GB (the latter is not yet available) and supports microSD cards.

Battery: The LG Optimus 4X HD will be powered by a battery of 2,150mAh. The Galaxy S3 is powered by a 2,100mAh battery.