Western Japan’s car and portable telephone manufacturer Kansai Cellular Telephone has opened the second cellular mobile telephone service in the region for business – using Motorola Inc’s system and offering its Microtak, described as the world’s smallest cellular phone: it has set monthly subscription charges at a 13% to 33% discount to the rates charged by Nippon Telegraph & Telephone Corp, and usage charges running between 4% and 29% cheaper, with the aim of garnering 40% of the market: it starts life with 3,500 subscribers, and hopes to build that to 10,000 by next March – but as well as Nippon Telegraph, it also has to compete with incumbent Japan Mobile Telephone in the region.