On May 1, 2005, Sony Ericsson agreed to become the global title sponsor for the WTA Tour in a deal worth 88 million US dollars over 6 years. The women's pro tennis circuit was renamed the Sony Ericsson WTA Tour. Just over a month later on June 7, it announced sponsorship of West Indian batsmen Chris Gayle and Ramnaresh Sarwan.
In October 2005, Sony Ericsson presented the first mobile phone based on UIQ 3, the P990.
On January 2, 2007, Sony Ericsson announced in Stockholm that it will be having some of its mobile phones produced in India. It announced that its two outsourcing partners, FLextronics and Foxconn will be producing 10 million cellphones per year by 2009. CEO Miles Flint announced at a press conference held with India's communications minister Dayanidhi Maran in Chennai that India was one of the fastest growing markets in the world and a priority market for Sony Ericsson with 105 million users of GSM mobile telephones.
On February 2, 2007, Sony Ericsson acquired UIQ Technology, a Swedish software company from Symbian Ltd.. UIQ will remain an independent company, Miles Flint announced.
On October 15, 2007, Sony Ericsson announced on Symbian Smartphone Show that they will be selling half of its UIQ share to Motorola thus making UIQ technology owned by two large mobile phone companies.