Mobile Operation Systems
There are plenty of operation systems in the mobile device world. Mobile phone is playing an important part in our daily life as the 3G network starts in China. More and more developers are pocusing on the mobile application development.Below is the list of most populate mobile OS and their developer network.
Symbian OS
Developer starts here http://developer.symbian.com/main/index.jsp
Symbian has the largest share in most markets worldwide, but lags behind other companies in the relatively small but highly visible North American market.This matches the success of its owner and largest customer, Nokia, in all markets except Japan. Nokia itself enjoys 52.9% of the smartphone market. In Japan Symbian is strong due to a relationship with NTT DoCoMo, with only one of the 44 Symbian handsets released in Japan coming from Nokia. It is used by many major handset manufacturers, including BenQ, LG, Motorola, Samsung, and Sony Ericsson. Various implementations of user interfaces on top of Symbian (most notable being UIQ and Nokia's own S60) are incompatible, which along with the requirement that applications running on mobile phones be signed is hindering the potential for a truly widely accepted mobile application platform. It has received some adverse press attention due to virus threats (namely trojan horses).