Sony Mobile Communications

Sony Ericsson Mobile Communications AB, was a multinational consumer electronics and telecommunications company, best known for its mobile phone products. The company, originally a joint venture between Sony and Ericsson, marketed products under the "Sony Ericsson" brand from 2001 until 2012, when Ericsson sold its share to Sony, with products hereafter being branded as "Sony". As part of a corporate restructuring, Sony Mobile was superseded by and integrated into Sony Corporation in 2021.

The alliance between Swedish telecom giant Ericsson and Japanese electronics giant Sony was formed to help Ericsson Mobile recover against competitors in the mobile phone market, while for Sony it gave the opportunity to grow in the field of cellular communication, where it had only a minor presence. Products and development was done with contributions from both parties: the company itself was based in London, England, with its design centre in Lund, Sweden, and other research and development facilities in Beijing, China; Tokyo, Japan; and San Francisco, United States. The Sony Ericsson T68i was the first GSM phone released under the joint venture since its launch. After the Sony acquisition, the company, now as Sony Mobile, moved its headquarters to Tokyo, Japan.