Samsung Galaxy S II (i9100)

If you are one of the 10 million Samsung Galaxy S II users, you’ve probably made the right choice. Its appearance and features make it one of the best Android smartphones released in 2011.

Weighing only 116 g, the phone is 8.49 mm at its thinnest point, making it the thinnest cell phone in the world. The 4.27-inch Super AMOLED Plus display makes the colors bright and vibrant.

For speedy performance, the handset is equipped with a dual-core 1.2GHz ARM Cortex A9 processor, which is strong in calculation ability and power-saving. The Gingerbread (Android 2.3) and TouchWiz 4.0 interface are easy to use.

The phone comes with 1GB RAM and 16GB storage. It features the full range of connectivity options that you would expect from a high end device -- Bluetooth, Wi-Fi, DLNA, GPS and HSDPA.

There's a 2-megapixel front camera for making video calls, and a rear 8-megapixel camera with a bright LED flash, autofocus and HD 1080p video recording capabilities.

The device now comes in two colors: white and pink. Its retail price is 4,000-4,200 yuan (US$635-666.7) in China.