10. LG Optimus One
Sales of the Optimus One started in November 2010 and became the first LG smartphone line to sell more than 1 million units. The device initially shipped with Android 2.2, a 3.2-inch display and a 3-megapixel camera. The phone had 512 MB of internal flash storage and a 2 GB microSD card that was upgradeable to 32 GB.