Walker joined Ericsson in the 1990's and took over the top marketing spot in March 2011. Last year, he was in charge of re-branding the company from Sony Ericsson to Sony Mobile after the Japanese tech and media giant bought out its partner. He will replaced by Jacob Stein. The new kid will be coming aboard at a time when Sony is being challenged hard by the Chinese duo of ZTE and Huawei.
source: MarketingMagazine via AndroidAuthority