Davies previously focused on advertising and digital marketing, including the significant global digital campaign for last year's James Bond film, Quantum of Solace.
Head of global communications and PR, Aldo Liguori, said the company was ‘shifting from a Hammersmith-centric view to a more global view' in its structure.
The move meant that marketing teams which had been split into ‘verticals' of brand, communications, and marketing strategy were becoming more closely aligned as ‘horizontal' global teams.
Sony Ericsson would not confirm which roles Davies was taking additional responsibilities from, stating that ‘people were phasing out of one role and into another'.
It is understood that McCann Erickson will retain the global ad account. Last year Sony Ericsson handed its £80m global advertising account to McCann Erickson London, moving the global brief out of Saatchi & Saatchi to integrate its marketing disciplines including online, print, TV and retail as well as greater consumer engagement.
But the mobile firm has a plan to reduce headcount by 2,000 people by June 2009 across all functions as part of cost savings of euros 300m. The business reported full year sales of euros 11.2m in 2008, down from euros 12.9m the previous year.
The mobile firm has had multiple changes in its marketing team in the past year. John Bernard, Sony Ericsson's global marketing manager, left the company last month after just 17 months in the role. He has since been appointed marketing director at internet security firm AVG.
Last march, Sony Ericsson appointed Lennard Hoornik, corporate vice-president and head of Asia Pacific, as its new global head of marketing, replacing Dee Dutta, who left the company after almost six years.
.jpg)
.jpg)