MIDlet showing status of GPS device connected to cellphone. Show availability of GPS device/signal, current position, speed, course and satellites' position and signal power.
Trekbuddy (v0.955) is a wonderfull tool for Geotagging. Geotagging means to whrite coordinates to pictures. Most people know this from flicr. A better way is to write the coord to the exif data of the pictures.
Mobup is a J2ME application created by Consultechnology that manages photo uploads on Flickr from a mobile device. It has the possibility to shoot your photo and add title, tags and description; you can add it to sets/groups and post it to your blog.