Flint took up the role in June 2004 and during his tenure he has seen Sony Ericsson rise to become the worlds fourth largest phone manufacturer.
In this period the company has increased its increased from 27.2 million units in 2003 to 74.8 million in 2006. Flint has also been credit for establishing Sony Ericsson as trendy manufacturer of camera and music phones.
Flint will be replaced on November 1 by Sony Ericsson USA chairman Hideki Dick Komiyama. The new president will relocate to Sony Ericssons London offices and Flint will stay on as his executive advisor until the end of December.
Commenting on his departure Flint said: After nearly 17 years in Sony and Sony Ericsson, I wish to develop new personal and business opportunities and intend to take a short career break before deciding on my next steps.
Leading a major mobile handset company which is also a joint venture between two of the worlds great companies has been a wonderful and rewarding experience.
I believe that, together, we have in place very firm foundations for the next phase of Sony Ericssons growth, and I wish Dick Komiyama every success in his new role.