Most adults now spend over four hours a day on their smartphones. It doesn't feel like four hours, because it arrives in fragments — a minute here, twelve minutes there, the unexplained half-hour before bed.

The question worth asking this summer isn't whether that's too much. It's what's on the other side.

A 2025 study published in PNAS Nexus gave participants two weeks of limited mobile internet. Improvements in attention were equivalent, in the researchers' framing, to being ten years cognitively younger. Wellbeing improvements exceeded typical antidepressant outcomes. These aren't small effects, and the intervention wasn't extreme — just less constant connectivity.

The cost that doesn't show up in screen time stats

The number on your dashboard undercounts the real cost, because it doesn't measure what behavioral researchers call "cognitive residue" — the mental overhead that stays active after you put the phone down.

A University of California study found it takes an average of 23 minutes to fully recover focus after any interruption. If you're checking your phone throughout the morning, you may never have been fully focused at all. The cost isn't just the four hours. It's what those four hours disrupt around them.

One summer experiment worth trying

Pick two hours on a weekend. Leave the phone in a different room. See what happens — not as a challenge, just as information.

What do you do? What does the time feel like? Do you feel better or worse at the end than you usually do?

Most people find they feel better. That's also useful information.

Unpluq creates the physical pause that makes the experiment easier to actually run.