Using GPRS for chating, calling etc : Download Nimbuzz
Locate your Friends: Share your location and retrieve the location of your buddies on a map. Great for arranging face to face meetings.
Make yourself heard: If your buddies are offline, let them know you’re trying to get in touch by sending them a “Buzz”. It will start Nimbuzz Mobile on their mobile phone.
Never lose your Contacts: Use the Phonebook to back up and restore your contacts. Contacts will be backed up online. Comes in handy when you have lost your mobile phone.