Consumers aged 14 and older access apps more frequently on smartphones than tablets, with social media the top app type on both devices.
Mobile devices and other digital technologies continue to have a growing impact on retail, including in-store shopping.
More than half of US millennial smartphone users have deposited a check by taking a picture of it.
Mobile banking ranked as the third most-used bank feature among respondents, at 45%.
For the first time in 2016, eMarketer expects the majority (51.2%) of adult mobile phone users in the US to use mobile banking.
As a whole, US Hispanics use their mobile phones to access social networking apps at nearly the same rate as their non-Hispanic counterparts.
Nearly seven in 10 French web users ages 15 and older said they had carried out at least one banking activity on a computer at home in the month before Q4 2013 polling.
BBA found that the average number of mobile banking transactions conducted weekly via mobile app more than doubled between 2012 and 2013, from 9.1 million to 18.6 million.
33% of mobile phone owners had used mobile banking during the 30 days prior to the survey, up from 28% a year earlier.
That millennials use digital banking for its convenience and flexibility explains why the top activities they conducted via online and mobile banking were checking balances or activity.