Mobile future: Smart homes get smarter
26 February 2013 Last updated at 12:52 GMT
Last year Mobile World Congress - the annual showcase event for mobile technology held in Barcelona - hosted a mocked-up house full of mobile technology that can help around the home.
This year it has gone one step further with a ''connected city''.
The BBC's Rory Cellan-Jones talked to Markus Kristensen of the Volvo Car Group about its bespoke in-car app offering, learned about online pedal power with Adam Denton of the GSMA, and visited a house of the future put on show by AT&T.