MobShareFTP If your cellphone has WiFi, this is the easiest way to tranfer files between your phone and computer wirelessly
ScreenSize Know the screen size of your mobile phone
KeyInfo KeyInfo - This app is used to test phone keys and switch sensors.
It will show what key you have pressed, in addition to the system name for the key and the Java key code for it. It can be very useful to identify broken or "stuck" keys in your cellphone.
Source code is available from authors blog
Simple Contact Management This application is a simple contact mgmt. application for all Java enabled mobile phones. This is a complete working application with persistent storage concepts. This is a great example for beginners of J2ME programming (with full source code)
SimpleDial This program allows you to produce dual tone multi-frequency (DTMF) sequences on your cell phone's speaker and thereby initiate a call on a normal phone. Great for those that don't like the radiation of their cell phone or that want to save