I have a Nokia 5310 mobile phone and recently i have purchased, i don't know much about this phone. I have a problem with my phone, my friend game me a .jar file application for my phone through bluetooth which was game. But the phone was not able to open this file, as i know that this phone supports .jar files. And also when i was trying to open this file i was getting an error that "file not supported". I don't know what to do please help me..