Alexander Graham Bell Invented the Phone. Now It Is Ruining Your Sleep.

Reading Time: 12 minutes

The Telephone Was Born Here

In August 1870, a 23-year-old Alexander Graham Bell arrived in Brantford, Ontario with his parents. He was ill. His family feared tuberculosis. They had already lost two sons to the disease and hoped that Canada's clean air might save their third.

The Bell family purchased a homestead of just over 5 hectares at Tutela Heights, overlooking the Grand River, for $2,600. It was here, resting on that riverbank on July 26, 1874, that Bell conceived the technical principles of the telephone. The fresh air may or may not have cured his lungs, but it certainly cleared his mind.

By August 1876, Bell made the world's first successful long-distance telephone call between Brantford and Paris, Ontario, a distance of about 13 kilometres. His father and Reverend Henderson started the Bell Telephone Company in Brantford the following year.

Today, the Bell Homestead at 94 Tutela Heights Road is a National Historic Site. Visitors can walk through the family's restored 1870s home, see original furniture and early telephone models, and visit the Henderson Home, which served as Canada's first telephone business office.

8 min read

What His Invention Became

Bell invented the telephone to connect people across distances. He wanted voices to travel where bodies could not. His invention was, at its core, about human connection.

One hundred and fifty years later, the great-great-grandchild of that invention sits on your nightstand, and it is ruining your sleep.

The smartphone is perhaps the most transformative and the most sleep-destructive technology ever created. It combines everything that sleep researchers warn against: a bright screen emitting blue light directly into your eyes, an endless feed of stimulating content designed to keep you engaged, notifications that fragment your attention, and social media platforms engineered to trigger emotional responses at all hours.

Bell could not have foreseen any of this. He was trying to help his deaf mother communicate. What he started now keeps 3.5 billion people awake at night.

There is no villain in this story. Just an irony so thick you could set a phone on it.

The Blue Light Problem

Your body regulates sleep primarily through melatonin, a hormone produced by the pineal gland in response to darkness. As evening approaches and light fades, melatonin levels rise, signalling to your brain that it is time to prepare for sleep.

Smartphone screens emit light in the blue wavelength range (446 to 477 nanometres), which is the precise range most effective at suppressing melatonin production.

In practical terms: scrolling through your phone in bed is telling your brain it is still daytime. Your pineal gland believes it. Your melatonin stays low. And you wonder why you cannot fall asleep.

What the Research Actually Says

The research on screens and sleep is extensive and consistent. Here is what the major studies found:

Adults: A cross-sectional study of 844 adults (ages 18 to 94) found that bedtime mobile phone use after lights out predicted poorer sleep quality, more insomnia symptoms, and more daytime fatigue. It also predicted later rise times, creating a cascade of schedule disruption (Exelmans and Van den Bulck, 2016).

Adolescents: The UK Millennium Cohort Study tracked 11,872 adolescents aged 13 to 15 and found that heavier social media use was associated with later sleep onset, longer sleep onset latency, and more nighttime awakenings. Over 20 percent were "very high" users at 5 or more hours per day (Scott et al., 2019).

Children and teens (broader review): A systematic review of 67 studies found that screen time was adversely associated with sleep outcomes (shortened duration and delayed timing) in 90 percent of studies across children and adolescents (Hale and Guan, 2015). Ninety percent. At that point, the science is not debating anymore.

It Is Not Just the Light

The blue light gets most of the attention, but it is only part of the problem. Screens disrupt sleep through at least three additional mechanisms:

1. Cognitive stimulation. The content on your phone is designed to engage you. News articles trigger worry. Social media triggers comparison. Email triggers planning. Text messages trigger obligation. None of these are mental states compatible with falling asleep. You are asking your brain to shift from "process this interesting and emotionally relevant content" to "shut down" in seconds. It cannot.

2. Time displacement. Every minute spent on your phone in bed is a minute not spent sleeping. This sounds obvious, but the "just one more scroll" habit reliably extends pre-sleep phone use by 20 to 40 minutes beyond what people intend.

3. Notification fragmentation. Even if you put the phone down, incoming notifications can fragment sleep. A vibration, a flash of light, a chime. Each one triggers a micro-arousal that you may not consciously notice but that your sleep architecture registers.

What to Do About It

You are not going to throw away your phone. We are not suggesting that. But here are evidence-based strategies that work:

The 60-minute rule. Stop using screens at least 60 minutes before bed. This is the most consistent recommendation across sleep research. Use the time for reading (paper books or e-ink devices), conversation, a wind-down routine, or techniques like EFT tapping or a physiological sigh.

Move the phone out of the bedroom. This is the single most effective intervention. Buy an alarm clock (they still exist and they cost $15). Charge your phone in the kitchen. The first night feels strange. The second night feels liberating. By the third night, you will wonder why you ever slept next to a notification machine.

If you must use your phone at night:

• Enable night mode or blue light filter (reduces but does not eliminate the problem)
• Set the screen to minimum brightness
• Use Do Not Disturb from 9 p.m. onward
• Switch to audio content (podcasts, audiobooks) instead of visual scrolling
• Set a screen time limit that locks you out of social media after a set hour

Optimize your physical sleep environment. A phone-free bedroom works best when the rest of your sleep environment supports the transition. A cool room (18 degrees Celsius), breathable sheets, the right pillow for your sleeping position, and a mattress that actually supports your body all make it easier to fall asleep once the screen is gone.

Visit the Bell Homestead

If you live in Brantford and have never been to the Bell Homestead, go. It is one of those local landmarks that people drive past for years without stopping, and then wonder why they waited so long.

The guided tours are genuinely interesting, the grounds are peaceful, and there is something grounding about standing in the room where a 23-year-old with a lung condition and a restless mind changed the world.

The irony of visiting the birthplace of the telephone and then putting your own phone away at bedtime is not lost on us. Bell would probably appreciate it. The man who invented the world's most important communication device reportedly preferred face-to-face conversation above all else.

Bell Homestead National Historic Site
94 Tutela Heights Rd, Brantford, ON
Guided tours: 9-11 a.m. and 1-3 p.m. (on the hour)
Self-guided exploration also available

Sources

1. West KE, Jablonski MR, Warfield B, et al. Blue light from light-emitting diodes elicits a dose-dependent suppression of melatonin in humans. Journal of Applied Physiology. 2011;110(3):619-626. PMID: 21164152.
2. Exelmans L, Van den Bulck J. Bedtime mobile phone use and sleep in adults. Social Science & Medicine. 2016;148:93-101. PMID: 26688552.
3. Hale L, Guan S. Screen time and sleep among school-aged children and adolescents: a systematic literature review. Sleep Medicine Reviews. 2015;21:50-58. PMID: 25193149.
4. Scott H, Biello SM, Woods HC. Social media use and adolescent sleep patterns: cross-sectional findings from the UK Millennium Cohort Study. BMJ Open. 2019;9(9):e031383. PMID: 31641035.
5. Christensen MA, Bettencourt L, Kaye L, et al. Direct measurements of smartphone screen-time: relationships with demographics and sleep. PLOS ONE. 2016;11(11):e0165331. PMID: 28017916.

Related Reading

• The Brantford Club: 127 Years of Business
• Dinner in Brantford, Sleep Like You Mean It
• Sleepmaxxing Routine Checklist
• Sleepmaxxing Bedroom Transformation
• Sleepmaxxing: Morning Sunlight