Avg Time Spent per Day with Major Media by US Adults, 2011-2017For years, the amount of time Americans spent on their mobile phones increased exponentially. Now, that trend may be "slowing considerably," according to a new report by eMarketer.

The eMarketer report claims mobile use growth actually peaked in 2012, when Americans clocked an average of one hour and 28 minutes on their smartphones and tablets for non-voice purposes, a 91% increase from the year prior. In the years since we've witnessed a slowdown in that growth rate, according to eMarketer. Non-voice time spent on mobile phones is now expected to grow just 11.3% in 2015, totaling an average time spent per day of two hours and 54 minutes.

It's a trend the eMarketer forecast expects will continue. eMarketer reports that by next year, the growth of time Americans spend on mobile devises for non-voice purposes will fall into the single digits, an increase of only 7.9% from this year, accounting for an average of 3 hours and 8 minutes per day on mobile devices.

“As the data shows, a large majority of American adults are already using mobile devices. This means there will be fewer new smartphone and tablet users added each year," said eMarketer forecasting director Monica Peart in a statement. “Also, the number of activities currently possible on mobile devices limits the amount of time a user can spend per day. For these reasons, growth in the amount of time spent on mobile devices will slow down significantly.”

In regards to time currently spent on mobile devices, eMarketer reports that much of the remaining growth is expected to come from the use of apps, which has increased steadily since 2011. In 2015, Americans spent an average of three hours and five minutes per day using mobile apps, an increase from two hours and 51 minutes in 2014. By 2016, eMarketer expects mobile device users will average three hours and 15 minutes using apps each day.

While the growth rate of mobile phone use is slowing, the eMarketer report claims that mobile is still “the only major medium eMarketer expects to grow this year and next with respect to time spent."

For comparison, desktop and laptop use been in a free fall since 2011, accounting for two-and-a-half hours of average use time that year, to only two hours and 12 minutes in 2015.