Future Laboratory did a report which is according to them the first ethnographic survey of 3G use across the UK.

From the BBC article 3G mobiles 'change social habits':

Researchers studied the phone habits of 10 groups of friends between the ages of 16-35 over six weeks in a range of UK cities.

The report's authors dubbed the new generation of mobile phone users Generation C, with C meaning content.

As well as offering bloggers the chance to post instantly to their own sites, researchers saw 3G phones used as a counterpoint to retailing, socialising, and as a tool for documenting their lives.

The Future Laboratory found names for the three most prominent groups:

• Social gatekeepers: Fulcrum of a social network and use 3G mobiles to keep friends up to date
• Piratopians: Creative outsiders who use 3G phones to make short films and other broadcasts
• High Street hedonists: Use phones to show off new purchases, take pictures of items or asked for instant opinions from a dressing room