The Sony Xperia Z (SO-02E) launched in Japan through NTT DoCoMo on the 9th February. Reports are suggesting that around 140,000 units have been sold during the first week. DoCoMo representatives described the performance as a “fairly encouraging start” (translated). The handset sits atop on the smartphone league tables in Japan, as you would expect considering it has just launched. It will be interesting to see how it fares once the initial hype has died down.