A mobile phone handset has incorporated connectors and/or circuitries to connect to plain ordinary telephone (POT) lines, various computing devices and/or a local area network (LAN). The POT line connection, e.g., a RJ-11 type connector, and the relevant circuitries allow a user of the mobile phone handset to utilize many convenience enhancement features of the mobile phone handset while at the same time taking advantage of the cheaper rate in making a telephone call over the POT line. In addition, the LAN connections and the connections to other computing devices allow the user to access the Internet (e.g., the e-mail network and/or the world-wide-web (WWW)) at a cheaper rate than the wireless access to the Internet, and may provide a better user interface.