A user's location is automatically transmitted to a network, and the network automatically customizes one or more environments, such as by customizing communication devices, other types of devices, or the like, based on the detected location and on profile information. Customizing an environment may include enabling services, such as setting up a public telephone or hotel telephone with a user's home base telephone settings and/or services, and/or may include disabling functions, such as disabling long-distance service when the user is away from home.