Electronics manufacturer Sony on Wednesday announced Xperia A4 (SO-04G) in Japan in partnership with telecom operator NTT Docomo. Sony Xperia A4 features 4.6-inch 720p HD display, 2600 mAh battery, Android 5.0 and 2GB of RAM. It is powered by 2.5GHz quad-core Qualcomm Snapdragon 810 processor and features a 20.7 MP rear camera with LED flash and 2 MP front camera.