12. HTC Evo 4G
Launched in June 2010, the Evo 4G was seen as Sprint's flagship Android smartphone, because it supported the carrier's 4G WiMax network. At the time, the Evo 4G held the record for launch-day sales at Sprint. The phone shipped with Android 2.1 and was updated a year later with Android 2.3. The device had a 4.3-inch display, 1 GB of internal storage and an 8 GB microSD card. The phone supported up to 32 GB of external storage. Other features included a 1GHz Qualcomm Snapdragon processor, an 8 megapixel camera in the back and a 1.3 megapixel camera in the front.