It's fall. Back to school. Time to bury your nose in a book, especially if you're a college student.

But when do college student have time for old fashioned reading if they're spending 8 to 10 hours a day on their mobile phones?

That's the average daily phone use for college students, according to a study out of Baylor University. More specifically, women college students reported 10 hours a day on their phones; men fessed up to almost 8 hours a day. And, no, they weren't focused on reading class-related ebooks.

The most popular activities: Texting, sending emails, checking Facebook, surfing the Internet and listening to music.

In a press release about the study, researcher James Roberts called the results "astounding."

"As cellphone functions increase, addictions to this seemingly indispensable piece of technology become an increasingly realistic possibility," said Roberts, a professor of marketing at Baylor's Hankame School of Business.

Nearly 60 percent of the 164 college students surveyed for the study, published in the Journal of Behavioral Addictions, said they might be addicted to the gadgets. Some said they felt agitated when cell phones were out of sight. Among the uses more associated with addictions? Pinterest and Instagram.

He also noted, as a professor should, that cell phones can pose risks for students and "may wind up being an escape mechanism from their classrooms."

Pay attention, class.