It shows you the SIM serial number, IMSI, Operator Code, IMEI, network type, CellID and LAC amongst other data. Also it can track the Cell ID, signal strength and store the GPS locations. All collected data can be dumped to a KML file or displayed in the application. For more information read the "Show Maps"=>About section.
Access coarse location sources such as the cellular network database to determine an approximate phone location, where available. Malicious applications can use this to determine approximately where you are.
fine (GPS) location
Access fine location sources such as the Global Positioning System on the phone, where available. Malicious applications can use this to determine where you are, and may consume additional battery power.
access extra location provider commands
Access extra location provider commands. Malicious applications could use this to interfere with the operation of the GPS or other location sources.