Apple takes steps to tackle smartphone addiction

Federighi acknowledged that it was time to deal with the impact of smartphones on everyday life.

For most young people who have grown up with smartphones, it's impossible to imagine not having their device with them at all times.

This smartphone dependency can be described as a "veritable obsession," according to Jean M Twenge, a psychology professor at San Diego State University. The young people she interviewed for a recent study almost all slept with their smartphones nearby.