An unannounced Sony phone with the model number S39h has been spotted by Xperia Blog. There are no specs or launch details to share, but Engadget China has it pegged as a dual-SIM phone. It's similar to the Xperia L (S36h), albeit with some small differences like a relocated front-facing camera. Not as glamorous as a dual-SIM Galaxy S 4, perhaps, but two signal bars ar