ASUS PadFone
ASUS PadFone market launch has delayed due to the shortage in Snapdragon S4.

ASUS unveiled its revolutionary PadFone at this year's Mobile World Congress (MWC) event. The device is reportedly a three-in-one - combining a smartphone, a tablet and a notebook - when paired with a PadFone Station or PadFone Station Dock. The device comes with the PadFone Stylus Headset and a Bluetooth Stylus Pen and is expected to hit most European markets in May.

Meanwhile, Chinese mobile manufacturer Huawei unveiled what it claimed to be the fastest quad-core smartphone, the Huawei Ascend D, along with two other Ascend D models, the Ascend D quad Xl and the Ascend D1 at the same event. The phones should be released across China, Australia, Europe, Asia-Pacific, North and South America and the Middle East in the second quarter of this year.

Display: The PadFone features a 4.3in Super AMOLED capacitive touchscreen, with a resolution of 540x960 pixels. The display is protected by scratch-resistant Corning Gorilla Glass with HCLR Film.

The D quad will feature a 4.5-inch IPS LCD capacitive touch-screen with a resolution of 1280x720 pixels. Huawei claims the D quad is an entertainment dynamo with a powerful 32-bit true colour graphic processor.

Dimensions: ASUS' PadFone measures 128x65.4x9.2mm and weighs 129g with the battery. The Ascend D quad measures 5.08x2.25x0.35 inches and weighs 131g.

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

Processor: The Huawei Ascend D quad is powered by Huawei's K3V2 1.2GHz/1.5GHz processor. The PadFone is powered by Qualcomm's Snapdragon S4 8260A dual-core processor, which was clocked at 1.5GHz. Both devices have 1GB of RAM.

Camera: Huawei's Ascend D has a rear camera of eight megapixels with dual LED auto-focus and can shoot video at 1080p. It also carries a secondary front-facing camera with a resolution of 1.3 megapixels. ASUS' PadFone also sports an eight megapixel camera and a 0.3 megapixel front-facing unit.

Connectivity: The Huawei Ascend D quad offers 3G connectivity and it supports Wi-Fi 802.11 n/g/b and Bluetooth version 3.0+HS. ASUS' PadFone supports WLAN 802.11 b/g/n and Bluetooth version 4.0.

Storage: The Huawei Ascend D quad has 8GB of internal memory space, while the PadFone comes with two options - 16/32GB. Both devices support microSD card slots.

Battery: The Huawei Ascend D quad has a standard battery of 1800 mAh which can last for up to a couple of days, under normal usage patterns. ASUS's PadFone is powered by a 1520mAh Li-ion battery.