Japanese mobile operator NTT Docomo has sold 20 million Raku-Raku Phone series handsets. The series, which is designed for user-friendliness, was first introduced in October 1999 and Docomo has since released a total of eighteen models. To commemorate the milestone, the company will add a new colour to the Raku-Raku Phone 7 model series, namely 'mint green'. It will be available in Docomo shops in late August.
