When it comes to smartphones, people can argue about the relative merits of a bigger display that is easier on the eyes and fingers or a smaller display that results in a more pocket-friendly unit. But whatever the length and width, it seems that the desire for a thinner smartphone is pretty much universal. And - for the time being anyway - they don't come any thinner than the Huawei Ascend P1 S that made its debut at CES this week. Measuring just 6.68 mm (0.26 in) thick, Huawei says although the Ascend PS 1 is the world's slimmest smartphone, it doesn't scrimp on the features.

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Huawei's Ascend P1 comes in two flavors - the P1 and P1 S. Both offer the same features but where the slimline P1 S gets a 1,670 mAh battery, the P1 is a slightly thicker 7.69 mm (0.3 in) thanks to a 1,800 mAh battery. Aside from the battery, both models have the same specs, which includes a 4.3-inch 960 x 540 pixel Super AMOLED touch display, 1.5 GHz dual core TI OMAP 4460 Cortex A9 processor, 1GB of RAM, 4GB onboard memory, 5.1 surround sound capabilities, Wi-Fi, Bluetooth 3.0, DLNA support, 8-megapixel rear-facing camera with backlight illuminated sensor and 1080p HD video capture capabilities, and a front-facing 1.3-megapixel camera for video calls.

Both quad-band GSM phones will come running Android 4.0 (Ice Cream Sandwich) and feature a PPVD back cover coating designed to dissipate heat. They will come in metallic black, ceramic white and cherry-blossom pink when released in Europe, the Asia-Pacific, North America, Australia, the Middle East and China from April 2012, with additional colors also on the way. Huawei hasn't yet revealed pricing or potential carriers for the phones.