Washington D.C., May 1 -- : Everywhere you look, people are looking at their mobile screens. Researchers conducted in-depth interviews with smartphone users to learn why people compulsively check their phones.

In the decade since smartphones have become ubiquitous, we now have a feeling almost as common as the smartphones themselves: being sucked into that black hole of staring at those specific apps, you know which ones they are, and then a half an hour has gone by before you realise it.

According to the study presented at ACM CHI conference, researchers found a series of triggers, common across age groups that start and end habitual smartphone use.

The team also explored user-generated solutions to end undesirable phone use.

"For a c...