Immensely.
Mobile phones, have they changed the lifestyle of students?
On any given day you will see them texting for hours.
I was passing thru a school zone, while waiting on the bus 20 or more standing alone and texting. Most had ear plugs.
Sure ! Now they spend more time with their phones than they do getting their education. On the bright side, it's good for them to have in case of an emergency.