What fills the gap when phones leave the classroom

Abstract

The removal of mobile phones from the classroom is regulated in several Spanish autonomous communities: Andalusia, Catalonia and the Community of Madrid have applied restrictions since the 2025-2026 school year, and Castilla-La Mancha regulated the 2026/2027 school year by educational stage through Order 104/2026, of 3 July. The available evidence on the measure comes from two sources with distinct designs: a collective twenty-one-day phone-free experiment with some 72,000 schoolchildren, voluntary, self-reported and without a comparison group, which recorded a 23% reduction in reported sleep problems and an 18% improvement in wellbeing, and a longitudinal study of 2,121 secondary school students that places around age sixteen the disappearance of the association between problematic social media use and depressive symptoms. The mechanisms that compete for attention reside in software and can be present in authorized educational technology, so a rule that regulates the device leaves the evaluation of the technology replacing it unresolved. A checkable evaluation criterion ties a tool’s success metrics to the completed task rather than to time spent.

Introduction

The regulation of mobile phones in Spanish schools was settled by regional rules between 2025 and 2026. The question those rules leave open is what fills the space and the time the device leaves free. Removal resolves the interruption the phone introduces into the classroom; the design of the technology installed in its place falls outside the scope of a rule that regulates the object.

The available data on the effects of removal come from a collective exercise without a comparison group and from a longitudinal association study, and their interpretation requires distinguishing between what each source measures and what is attributed to it. Evaluating classroom technology additionally requires a criterion of its own, independent of the device it runs on.

Regulatory framework in Spain

Castilla-La Mancha published Order 104/2026, of 3 July in the regional official gazette on 10 August 2026, setting the instructions for the 2026/2027 school year. The rule regulates by stage. In Infant and Primary education, as a general rule, pupils do not come to school with a phone. In Secondary the ban covers the whole school day. In Bachillerato and vocational training the restriction concentrates on the classroom. The exception is single and applies throughout: strictly pedagogical use under the direct supervision of teaching staff.

The measure coincides with that of other regions. Andalusia, Catalonia and the Community of Madrid have applied restrictions since the 2025-2026 school year; in Madrid’s case they reach more than 550,000 Infant and Primary pupils, aged three to twelve, in publicly funded schools. The regions differ in scope and agree on the youngest age bracket.

Available evidence on removing the device

In March 2026, Austria’s public broadcaster organized a collective twenty-one-day phone-free experiment involving some 72,000 schoolchildren aged ten to eighteen from Austria, Switzerland, Germany and Italy. Around 46,000 answered questionnaires at three points: before, on finishing, and five weeks later, and two thirds completed the full twenty-one days. Sleep problems fell by 23% among those who reported them at the start, depressive symptoms improved by around 15%, general wellbeing rose by 18% and problematic internet use went from 70% to 58%. Scientific supervision came from the psychologist Oliver Scheibenbogen, of the Anton Proksch Institute in Vienna. The design of the exercise bounds the reach of those figures: voluntary participation, self-reported measures, no comparison group and no peer-reviewed publication.

Age modifies the association between use and symptoms. A longitudinal study from Miguel Hernández University, published in Scientific Reports in 2026 with data from 2,121 secondary school pupils in the Valencian Community, found that the association between problematic social media use and depressive symptoms weakens progressively with age and disappears around sixteen. The authors attribute the pattern to the maturation of emotional and cognitive self-regulation. The study measured problematic use, understood as loss of control and interference with sleep, relationships and daily life; counting hours of screen time and the removal of the device fall outside its object of measurement.

Attention-capture mechanisms and the scope of the rules

The personal phone concentrates the mechanisms that compete for attention, and removing the device acts on that concentration. The mechanisms reside in software. Rewards for coming back each day sustain the habit; chained autoplay turns a decision into a sequence; scrolling without closing points removes the limits between blocks of content, so no signal marks the end; a notification diverts attentional resources even when the person never opens the application.

These mechanisms derive from a prior decision about what counts as success. When a tool is assessed on time spent, frequency of return or number of interactions, those functions constitute the logical way to meet the objective.

None of those mechanisms requires a personal phone, and all of them can be present in an authorized educational application, installed on the school’s tablet and used under a teacher’s supervision. The European Commission uses the term dark pattern for design decisions that materially impair the capacity to make free and informed choices, and the Digital Services Act prohibits them in the services within its scope. A school rule that regulates the device leaves that ground untouched.

The success metric as an evaluation criterion

An alternative evaluation criterion ties a tool’s success to its purpose. Its indicators are checkable:

• Share of tasks completed.
• Time needed to complete the function.
• Errors and drop-offs.
• Number of interruptions.
• Use of pause and exit functions.

That list allows a question to be put to a supplier before anything is installed in a classroom: what does this tool count as success. An answer based on minutes of engagement describes a product of the attention economy, whatever its pedagogical content.

Limitations of the available evidence

The twenty-one-day experiment combines voluntary participation, self-reported measures, the absence of a comparison group and the absence of a peer-reviewed publication. Without a comparison group, the recorded improvements cannot be attributed to the removal of the device or distinguished from the self-selection of participants or from the expected course of the measures.

The Miguel Hernández University study measures problematic social media use, defined by loss of control and interference with daily life. The removal of the phone falls outside its object: the threshold of sixteen describes the age at which an association fades and does not establish the effect of any regulatory measure. Its longitudinal design describes associations, with no basis for causal inference, and the sample comes from the Valencian Community, so transferring it to other populations would require its own confirmation.

The criterion of task-linked metrics lacks a specific evaluation in the sources reviewed. Its effect on what happens in a classroom is a hypothesis awaiting a test.

Conclusions

The removal of phones from the classroom is regulated in several autonomous communities through rules that grade the restriction by educational stage. The available evidence associates the absence of the device with self-reported improvements in sleep and wellbeing and places around age sixteen the point at which the association between problematic social media use and depressive symptoms fades, with designs that preclude causal inference. The mechanisms that compete for attention reside in software and can reappear in authorized educational technology, a ground the device rules leave untouched. Evaluating that technology has a checkable criterion in the success metrics the supplier declares, itself awaiting an evaluation with measures of its own.

The hub’s design criterion: Distraction-Free Apps

Distraction-Free Apps is the criterion with which yeshcube develops applications built around a defined function, with limited interruptions and without mechanisms intended to artificially prolong time of use. Under that criterion, a tool’s success is assessed against its purpose, with metrics tied to the completed task.

The hub’s audio-first principle operates in the same direction by a different route. When voice and sound are the main interface, the experience stops needing the gaze, and a visual surface nobody looks at cannot compete for anyone’s attention. Work without screens sets out to reduce digital fatigue by design rather than by prohibition.

This criterion governs the applications the hub develops and does not certify those of third parties integrating its technologies, which follow their own design criteria.

Collaborating on research into design and attention

yeshcube develops this line within Allies, its scientific collaboration system, with four partner types and three principles: value for value, traceability and independence. No partner can veto a publication.

Checking whether a design criterion changes what happens in a classroom requires measures no single team assembles alone. The work is of interest to developmental psychology and educational technology groups, to schools willing to evaluate the tools they already use, and to developers willing to publish the metrics they assess their product against.

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References

• Castilla-La Mancha. Order 104/2026, of 3 July. Published in the Official Gazette of Castilla-La Mancha on 10 August 2026; regulates device use by educational stage for the 2026/2027 school year.
• Lanza Digital. Coverage of the application of Order 104/2026 in Primary education. 2026.
• PantallasAmigas. Regulation of mobile phone use in schools by autonomous community. Compilation of the regional restrictions in force since the 2025-2026 school year.
• Diario Libre. Coverage of the collective twenty-one-day phone-free experiment organized by Austria’s public broadcaster. 2026. Some 72,000 schoolchildren aged 10 to 18 from Austria, Switzerland, Germany and Italy; voluntary participation, self-reported measures, no comparison group and no peer-reviewed publication.
• Miguel Hernández University. Longitudinal study on problematic social media use and depressive symptoms in adolescents. Scientific Reports, 2026. 2,121 secondary school pupils in the Valencian Community.