7. LG Optimus S
Released in October 2010, the LG Optimus S was part of a family of entry-level smartphones manufactured by LG and sold by Sprint. The phone shipped with Android 2.2 Froyo, and was later up upgraded to 2.3 Gingerbread. The Optimus S had 512 MB of internal storage, a 2 GB microSD card, upgradeable to 32 GB; a 3.2-inch display, a 3 megapixel camera and a 600 MHz Qualcomm processor. The device had a distinct metal accent that covered the phone's top and one third of each side. On the strip were four hard components, the power button, two volume control buttons and an audio output.