Esato.com has a good find on Sony Ericsson's location aware phones.
For example, the wallpaper display on the screen shows pumpkins when the phone’s calendar sees the date is Halloween, and Christmas puddings on December 25th.
Network roaming, or GPS, can tell a phone what country it is in, so the ring-tone might change to a reggae tune as the plane touches down in Jamaica.
A restaurant could use short-range Bluetooth signals to deliver the specials menu direct to the phone's screen, and a cinema or church could use Bluetooth to switch it to silent mode.
Stockbrokers could enable an option to display the latest share prices every 10 minutes and golfers could use continually updated weather forecasts for wallpaper.Priority coding lets some automated controls override user settings