A new line of research is testing whether a passive smartphone signal, described by researchers as a marker of “social feeling” or subjective connectedness, can flag a psychotic relapse days before obvious symptoms return. The approach uses passive sensor and interaction data collected quietly in the background of a person’s regular phone use, rather than daily surveys or clinic visits.

What the Research Proposes

Digital phenotyping studies in people with a history of psychosis have tracked patterns such as call and text frequency, movement between locations, screen time, and typing rhythm, then combined these with brief, periodic check-ins about mood and social connection. Researchers found that a composite “social feeling” score, reflecting how connected, engaged, or withdrawn a person appears through these signals, tended to drop in the one to two weeks before a documented relapse, often before the person or their care team noticed a change.

The signal is not a single data point but a trend: a gradual pulling away from calls and messages, shrinking movement patterns, and declining self-reported social engagement, appearing together rather than in isolation.

Why It Matters

Relapse in psychotic disorders is frequently identified only after symptoms have escalated enough to disrupt daily functioning, work, or safety. Early warning signals that appear during the prodromal window, the period before a full relapse, could give clinicians and families a chance to intervene sooner, whether through a medication check, increased support, or a proactive appointment, rather than reacting after a crisis has already begun.

Because the underlying data is collected passively, it does not require the person to be well enough to reliably self-report during the exact period when insight and motivation may already be declining, which is one of the persistent challenges in relapse prevention.

What This Research Does Not Prove

This is an early-stage signal, not a diagnostic tool. Studies to date have involved relatively small, closely monitored groups, and the “social feeling” score has not been validated as a standalone predictor across diverse populations, phone types, or real-world settings outside of research programs. False positives and false negatives are both possible, and normal life changes, such as a busy work week or a change in social circle, could plausibly move the same signals without any relapse occurring. Passive monitoring also raises legitimate privacy and consent questions that have not been fully worked out for routine clinical use.

When to Seek Help

Regardless of what any digital signal shows, certain changes warrant prompt clinical attention: hearing or seeing things others do not, new or intensifying paranoid beliefs, disorganized speech or thinking, a marked withdrawal from previously important relationships or routines, or any thoughts of harming oneself or others. Family members or close contacts who notice these changes should not wait for confirmation from an app or score before reaching out to a treatment provider.

How to Talk to Your Doctor

People with a history of psychosis, or their families, can ask their treatment team directly whether digital monitoring tools are being used or considered as part of ongoing care, and what the plan would be if such a tool flagged a possible early warning sign. It can help to describe specific, observable changes, such as sleep disruption, social withdrawal, or shifts in daily routine, rather than general impressions alone.

Which Professional to See

A psychiatrist typically manages the medical and medication side of psychotic disorders, while a psychologist or licensed therapist experienced in psychosis can support relapse-prevention planning and coping strategies. Community mental health teams or early-intervention psychosis programs, where available, often coordinate both alongside family and case management support.

Questions to Ask

Useful questions include: What does my current relapse-prevention plan look like, and who should I contact if I notice early warning signs? Are there specific changes in my routine that have preceded relapses in the past? If digital monitoring becomes available through my care team, how would that information be used and who would see it?

Bottom Line

Passive smartphone signals tied to social withdrawal show early promise as a way to flag psychosis relapse before it fully develops, but the research is still preliminary. The most reliable safeguard remains a clear, personalized relapse-prevention plan built with a treatment team, not any single technology.

Related Topics

Related reading: Schizophrenia