Xiaomi Tech Company's upcoming Mi-One S, which is soon to release in the domestic Chinese market this fall, has its pre-orders status exceeding one million units, making it one of the top anticipated smartphones this year.

According to reports, the first batch of 200,000 orders for the Android device was sold out within thirty minutes, with 1.3 million orders yet to be satisfied. "Less than half an hour, 200,000 units MI-ONE S have sold out. Let's expecting the next round will come soon. Thank you all the MI-Fans," said the Chinese phone maker on its Facebook page.

Available in limited stock, the Mi-One S is an upgrade to the already available Mi-One version which received a wide reception of over 3.5 million units being sold in the market last year.

Among the specifications, the device sports a 4-inch 480 x 854 pixels TFT capacitive touchscreen, 4 GB ROM, 1 GB RAM, up to 32 GB microSD card slot, HSDPA 14.4 Mbps, HSUPA 5.76 Mbps, 8-megapixel camera, 1080p, 2-megapixel camera, dual-core 1.7 GHz Scorpion processor with Adreno 220 graphics support and Li-Ion 1930 mAh battery.

At 149 g, the Mi-One S is slightly heavier and bigger than Apple's current iPhone 4S which weighs 140 g. In comparison, the iPhone 4S features a 3.5-inch screen, 512 MB RAM, 8-megapixel camera, dual-core 1 GHz processor and Li-Po 1432 mAh battery. In terms of price, the Mi-One S is priced at an extremely affordable $235, which is almost less than half of the iPhone 4S' price tag.

Earlier this week, Xiaomi also announced the Mi-Two version which will arrive with a Snapdragon S4 Pro chipset quad-core Krait processor and Adreno 320 GPU. The unlocked version device is expected to be launched in October at a very low price of $315.