Sony has just announced the Xperia Go, a 3.5-inch water-resistant Android 2.3 smartphone, which will be known as the Xperia Advance over in the United States. Joining it in earning IP67 certification is the Xperia Acro S, a 4.3-inch Android device with a 1280 x 720 display resolution and the same Android 2.3 operating system.
