A client-server based system for providing location related information and services to mobile users is disclosed. A plurality of servers, wherein a server is a provider of information and services related to a specific predefined geographical coverage area, operate in a tree-shaped network. An operating mobile client, preferably operating in a mobile phone or PAD of a mobile user, establishes upon connection to the network an association, based on client location information, with one server at a time. A server association can be transferred from one server to another on an existing network connection as the user relocates from one server coverage area to another, and a user profile stored with the client or a special user profile server is applied to the standard user interface in the current server to provide the client with a personal user interface adapted at any time to the requirements of the user and to the information and/or services available at the current server.