I am building an application on J2ME and wanted to know whether I can port the same application on other mobile platforms without redoing it. Please let me know if this is possible and if yes then what would be the porting cost to port it on Symbian, Windows Mobile and iphone platforms. Any suggestions shall certainly be appreciated in finding the right resource. I have several upcoming projects on mobile application and are looking for a reliable source for long term. Thank you in advance.