# Toyoake voluntary smartphone usage initiative

> Live situation record from CLSTR: https://clstr.news/situations/toyoake-voluntary-smartphone-usage-initiative
> Updated: 2026-08-25T07:37:05.000Z. Sources: 27. Developments: 2.

The Japanese city of Toyoake has released findings from a voluntary initiative launched in October 2025, which recommends that residents limit non-essential digital device usage to two hours per day during leisure time. The program aims to prevent screen time from interfering with sleep, recovery, or family interaction without implementing bans or penalties.

A survey of 1,907 residents aged 16 to 80 indicated a high awareness level of 87.6 percent. While 27.1 percent of respondents reported becoming more mindful of their device usage, only 5.1 percent reported an actual reduction in screen time. Data further indicates that usage remains high, particularly among younger demographics. On workdays, 46.6 percent of respondents spend at least two hours on digital devices during leisure time, a figure that increases to 59.6 percent on non-work days.

As the conversation around digital health expands, researchers and medical institutions are highlighting the physiological risks of improper smartphone use. Experts suggest that passive scrolling can negatively affect mood and mental health, whereas intentional usage, such as cognitive games, may improve brain function. Furthermore, medical observations from the Cleveland Clinic indicate that active smartphone use before bed can stimulate the brain and disrupt circadian rhythms due to blue light exposure, potentially delaying REM sleep.

## Claims

- Smartphone usage can worsen mood in healthy individuals depending on how the device is used. (corroborated by 3 sources)
- A 2025 YouGov survey found most adults under the age of 45 wish to reduce their screen time. (corroborated by 3 sources)
- Certain fast-paced action video games can improve cognitive abilities. (corroborated by 3 sources)
- Toyoake City issued a voluntary recommendation in October 2025 to limit leisure digital device use to two hours per day. (corroborated by 3 sources)
- 87.6 percent of 1,907 surveyed residents were aware of the recommendation. (corroborated by 3 sources)
- 27.1 percent of respondents reported being more mindful of their device usage. (corroborated by 3 sources)
- 5.1 percent of participants reported an actual reduction in screen time. (corroborated by 3 sources)
- 46.6 percent of respondents use digital devices for at least two hours during leisure time on workdays. (corroborated by 3 sources)
- 59.6 percent of respondents use digital devices for at least two hours during leisure time on non-work days. (corroborated by 3 sources)

## Timeline

### 2026-08-25: Smartphone usage impacts mental health and sleep patterns

Experts highlight the mental and physical risks of smartphone overuse, including sleep disruption and mood changes, while Toyoake, Japan, tests a voluntary two-hour daily screen time limit.

16 sources. https://clstr.news/cluster/toyoake-japan-reports-results-of-voluntary-screen-time-experiment

### 2026-08-19: Toyoake implements voluntary smartphone usage guidelines

Toyoake, Japan, reports that its voluntary two-hour daily smartphone recommendation has led 27.1% of surveyed residents to become more mindful of their screen time.

11 sources. https://clstr.news/cluster/windows-settings-allow-customized-mouse-wheel-scrolling-in-excel

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Cite as: Toyoake voluntary smartphone usage initiative. CLSTR, https://clstr.news/situations/toyoake-voluntary-smartphone-usage-initiative