Put Your Phone Down: What Happens When You Actually Disconnect

Half of American smartphone users worry they use their device too much. Among people under 30, that number jumps to 80%. But worrying about your phone use while continuing to use your phone is a familiar kind of paralysis. What if someone actually took the internet away? What would happen?

Researchers at the University of Alberta ran exactly that experiment, and the results should make you reconsider the tiny glowing rectangle you’re probably reading this on.

The Experiment

Castelo and colleagues (2025) conducted a month-long randomized controlled trial with 467 participants. Using a mobile app called Freedom, they blocked all mobile internet access on participants’ smartphones for two weeks. No social media, no browsing, no apps that require internet. Texts and phone calls still worked. Participants could still use the internet on laptops and tablets. The intervention specifically targeted what makes a smartphone “smart”: the constant, portable, always-available connection to the online world.

The researchers tracked compliance objectively through the app and measured three categories of outcomes: subjective well-being (life satisfaction, positive and negative emotions), mental health (symptoms of depression, anxiety, anger, social anxiety), and sustained attention (measured with a validated cognitive performance task, not just self-report).

The Results Were Striking

After two weeks of blocked mobile internet, participants showed significant improvements across all three domains. Here’s what the numbers looked like:

• Sustained attention improved by the equivalent of being 10 years younger. The change in objectively measured attention was comparable to reversing a decade of age-related cognitive decline. For context, it was also about a quarter of the difference between healthy adults and those with ADHD.
• Mental health improvements were larger than the average effect of antidepressants. The effect size for depression symptoms (d = 0.56) exceeded the meta-analytic effect of antidepressant medication and was similar to cognitive behavioral therapy.
• Subjective well-being increased significantly, including higher life satisfaction and more positive emotions.
• 91% of participants improved on at least one outcome.

Screen time dropped from an average of 314 minutes per day to 161 minutes. And when participants got their internet back, the benefits partially persisted because many of them continued using their phones less than before.

When people didn’t have mobile internet, they spent more time socializing in person, exercising, and being in nature. The phone wasn’t just wasting time. It was displacing the activities that actually make people feel good.

Why Your Personality Matters Here

Not everyone is equally vulnerable to the downsides of constant connectivity. A 2025 systematic review and meta-analysis by Ma and colleagues examined the relationship between neuroticism and physical activity across 25 studies. They found a significant negative correlation: higher neuroticism is associated with lower physical activity levels.

This matters for the phone conversation because neuroticism also predicts higher digital stress, more negative emotional reactions to social media, and greater difficulty disengaging from screens. The pattern creates a cycle: neurotic individuals are more prone to phone overuse, which displaces physical activity, which further exacerbates the emotional instability that characterizes neuroticism in the first place.

The meta-analysis found that for every standard deviation increase in neuroticism, physical activity decreases by approximately 0.15 standard deviations. That’s a modest but meaningful relationship, especially when compounded over years and combined with increasing screen time.

What Screens Are Replacing

The Castelo study’s mediation analyses revealed something important: the improvements in well-being were partially explained by changes in how people spent their time. Without mobile internet, participants spent more time exercising, socializing face-to-face, and being outdoors. The phone wasn’t just a neutral time-filler. It was actively crowding out the behaviors most strongly associated with psychological health.

Research on in-person human connection reinforces why this displacement matters. Goldstein and colleagues (2018) used simultaneous brain recording (hyperscanning) to study what happens when romantic partners hold hands during pain. They found that physical touch between partners produced measurable brain-to-brain coupling, a synchronization of neural activity between the two people. This coupling was strongest when the partner being touched was in pain, and the degree of coupling correlated with both the magnitude of pain reduction and the partner’s empathic accuracy.

In other words, human touch doesn’t just feel comforting. It creates a literal neural connection between two people, and that connection has measurable analgesic effects. No app, notification, or social media interaction produces anything remotely comparable. When your phone displaces time you could spend in physical proximity with people you care about, you’re trading a biologically powerful form of connection for a pale digital imitation.

Practical Steps That Actually Work

You don’t have to block your internet for two weeks (though the research suggests you’d benefit if you did). Here are evidence-based starting points:

• Create phone-free zones. Bedroom, dinner table, first hour after waking. These boundaries reduce the passive displacement of sleep, conversation, and morning calm.
• Replace, don’t just remove. The Castelo study shows that benefits come partly from what fills the gap. Plan physical activities, in-person social time, or outdoor time for the hours you reclaim.
• Track your screen time honestly. Participants in the study averaged over five hours of daily smartphone use before the intervention. Most people underestimate their own usage significantly.
• Move your body. The neuroticism and physical activity research suggests that exercise doesn’t just improve fitness. It may actually shift personality-level emotional patterns over time.
• Prioritize touch. Hold hands. Hug people. Sit close to the people you love. The brain-to-brain coupling research shows that physical proximity creates something screens literally cannot replicate.

Know What Drives Your Habits

Your relationship with your phone is shaped by your personality. People high in neuroticism, extraversion, and conscientiousness all experience digital stress differently. Understanding your Big Five profile gives you insight into why you reach for your phone and what it costs you. Take the free Big Five personality test to map your tendencies, or explore the Connection Style Test to understand how your attachment patterns show up in both digital and in-person relationships.