Cisco Systems Inc. released a study on Monday that said smart phone and tablet computer use will lead to a 26-fold increase of Internet traffic over mobile devices by 2015.

The company also said connection speeds will rise 10-fold during that time.

The study, aimed to give Cisco customers a view of consumer trends, cited increasing use of Google Inc.’s Youtube and Netflix Inc. on mobile devices. By 2015, two-thirds of mobile data traffic globally will be for video.

The study said there will be an astounding 7.1 billion mobile Internet-connected devices by 2015, almost the same number as the world’s projected population.

“Consumers are expecting more bandwidth, because new applications are coming that take up more bandwidth,” Suraj Shetty, vice president of service provider marketing at Cisco, told Bloomberg. “The question comes down to ‘how much money will people pay for that increasing expectation?’ which will drive the whole value chain itself.”

Mobile data traffic grew by 159 percent in 2010, about 3.3 times faster than fixed Internet traffic, the report said. That was higher than expected.