Visa has invested an undisclosed amount in Dublin-based mobile domain name registry dotMobi.
European mobile phone networks could start their own mobile search service as they consider how to increase revenue from search advertising, according to a report.
The companies will use the 3GSM World Congress, the world's largest mobile industry exhibition and conference, in Barcelona next week to consider a joint initiative aimed at replacing lost revenue from falling access costs with that from on-the-move ads.