In the first half of 2010, although Sony Ericsson did not frequently release new mobile phones, the new products such as X10, GreenHeart series, and X2i launched at the spring press conference also attracted a lot of attention. However, the Walkman series mobile phones, once the favorite of young people, did not appear in people's sight. More than a year of silence later, Sony Ericsson repositioned the Walkman series mobile phones and brought the Walkman phone back to the mainstream mobile phone category with a relatively low-end Sony Ericsson W20.