Designs on all kinds of marketsUK mobile phone maker Sendo is launching a new line of 'feature phone' mobile handsets, and says it is on track to launch its new smart phone this autumn, following the demise of its Microsoft-powered Z100. The company also plans to launch a smart phone developer programme on Monday during the 3GSM Congress in Cannes, France, to boost the number of applications that will run on its handset when it arrives on the market. Sendo, a start-up which focuses on making customisable handsets branded by network operators, made headlines late last year when a smart phone relationship with Microsoft collapsed into mutual acrimony. Sendo later filed a lawsuit accusing Microsoft of a conspiracy to rip off Sendo's technology and give it to low-cost Taiwanese contract manufacturers, a charge Microsoft denies. Sendo had already begun manufacturing the Z100 when the project was aborted, and there has been some speculation over whether Sendo could simply replace its Windows CE operating system with that of Symbian, its new smart phone partner. CEO Hugh Brogan said that is out of the question: "Even if we could, we wouldn't." Sendo is planning to deliver a smart phone software developer kit (SDK) in March, and will supply a full developer kit including test hardware in June. Brogan said he "could not be more happy" with Symbian's cooperation on the new handset. He said that Sendo has more freedom to customise its smart phone because features such as multimedia messaging service (MMS) and Java support are already standard on Symbian. "We don't have to bring it up to the standard operators expect, we start from there," Brogan said. Sendo added MMS and Java support to Windows Smartphone 2002 through its own efforts. Sendo has given away little about its new smart phone other than that it will be based on the Symbian operating system and Nokia's Series 60 user interface. Series 60 is designed to be operated via the phone's keypad, rather than with a stylus. In the more immediate future, Sendo is launching a line of 'feature phones', a term that refers to handsets with some added features, such as colour screens and MMS. Smart phones generally have handheld computer-like processing power and features. The first of the new range is the M550, announced last Friday, a clamshell handset with a colour screen, games and customisable polyphonic ring-tones and graphics. It also supports EMS (enhanced messaging service), which allows users to send ringtones, simple graphics and customised text to other EMS handsets. Unlike MMS, EMS cannot handle photographs and sound recordings. Sendo said it has priced the handset significantly below other colour clamshell handsets but did not reveal pricing specifics. At 82mm x 45mm x 19.6mm, the M550 is significantly smaller than other clamshell mobile phones, according to Brogan. He said that Sendo plans to launch four feature phones this year.