Method and system for providing contact information for mobile communication device users

A method of establishing a mobile communication device call between a calling mobile communication device and a called mobile communication device, the method comprising:

• receiving from the calling mobile communication device a look-up request for a user of the called mobile communication device, wherein the look-up request is generated via a web or WAP access or with a client software application operating on the calling mobile communication device and is transmitted over a data channel before a voice channel has been established between the calling mobile communication device and the called mobile communication device;
• accessing a registry and obtaining contact information for the called mobile communication device in response to the look-up request;
• providing the contact information for the called mobile communication device to the calling mobile communication device over the data channel or via the web or WAP access;
• and
• permitting the calling mobile communication device to establish a communication with the called mobile communication device with the contact information.

A system for providing contact information for mobile communication device users, the system comprising:

• a registry for storing user profiles created and maintained by a plurality of mobile communication device users, each user profile having information representative of user's name and mobile communication device number;
• a first computer program stored on memory associated with the registry, the first computer program comprising
• a code segment for receiving a look-up request from a calling mobile communication device;
• a code segment for accessing the central registry and obtaining contact information for a called mobile communication device that matches the look-up request;
• and
• a code segment for providing the contact information for the called mobile communication device to the calling communication device;
• and
• a second computer program stored on memory of the calling mobile communication device, the second computer program comprising
• a code segment for generating the look-up request and transmitting it to the registry;
• a code segment for receiving the contact information for the called mobile communication device;
• and
• a code segment for initiating a communication between the calling mobile communication device and the called mobile communication device using the contact information.