Although fewer than 4% of US mobile phone users currently use their phones to pay for good and services, half expect to do so in the future, according to research from Nielsen.
Nielsen research that surveyed 30,000 users found there had been a 73% increase in the number of people using their mobiles to browse web shopping and auction sites, with eBay taking the lion's share of the web-viewing figures.
Nielsen said there were now 40 million mobile web users in the US, although only a minority actually pay for good and services online.
Nielsen said a perceived lack of security was the major barrier to increased spending on the mobile internet, with more than 40% of consumers citing security concerns on mobile networks.
Many were also not confident that mobile purchases could be successfully completed on mobile networks.
Despite the lack of consumer confidence, Nielsen said further increased mobile spending would be seen from next year.