How can a phones midlet be unsupported (gionee l800)

Sep 2, 2005 . This HowTo should solve that by telling you how ridiculously easy Java midlets are to install, and how to make the most out of the Java features on your phone. Hugely Brief Introduction to Java J2ME. Java is an object-oriented programming language developed by Sun Microsystems that can trace its roots . i have a lg620g cell and iam trying to download a game it keep says unsupported files its a jar files how do i fix.