Method and device for mobile communication

A method and a system for storing contact information in the memory of a first electronic device ( 310 ), which is capable of communicating via a communication network, with at least one second electronic device ( 320, 340 ). The method comprises establishing a communication connection on the basis of a first piece of contact information between said first electronic device and at least one second electronic device ( 320, 340 ). The method also comprises receiving at least one second piece of contact information as a response to the first piece of contact information formed, the second piece of contact information being related to said first piece of contact information, storing said second piece of contact information in the memory of said first electronic device ( 310 ), and linking said first piece of contact information and said at least one second piece of contact information to point to one another.