Use a dedicated alarm clock to remove the phone from the bedroom

A cheap alarm clock eliminates the phone-in-bedroom rationalization, freeing the whole room from the device.

Why it works

The alarm clock use case is the most common reason people keep phones in the bedroom — and therefore the most common source of bedtime and morning checking. Eliminating the alarm function from the phone removes the last structural reason to have it present during the sleep window, which is also when the decision to check is lowest-cost and highest-frequency.

How to do it

1. Buy a basic alarm clock — digital or analog, under ten dollars.
2. Place the phone charger outside the bedroom before bed.
3. Use the alarm clock for waking; reach for the phone only after you have been out of bed for at least ten minutes.

Evidence

Phone use in the bedroom is observationally associated with poorer sleep onset, reduced sleep duration, and morning mood. Removing the device from the room addresses the behavioral root rather than relying on willpower not to use it. (observational)

Observational; causal direction and magnitude of effect vary by study. An alarm clock is a cost-free structural intervention relative to the observed association.

Sources

• Christensen et al. (2016), smartphone use and sleep — observational association between nighttime phone use and sleep disruption

Common mistake

Keeping the phone in the bedroom but face-down — the Ward et al. research suggests even a face-down phone in the room reduces cognitive capacity; the alarm clock solution removes the device entirely.