150 years ago, nine words changed the world

On March 10, 1876, a 29-year-old Scottish immigrant named Alexander Graham Bell sat in a modest laboratory at 5 Exeter Place in Boston and did something no human being had ever done: He spoke into a wire, and someone in the next room heard his voice. His exact words, recorded in his laboratory notebook: “Mr. Watson — Come here — I want to see you.” His assistant, a 22-year-old mechanic named Thomas Watson, came running.

That was it. Nine words, shouted through a crude device that used a vibrating wire dipped in acid water to convert sound to electricity. At the time, it worked only one way. The sound, Bell admitted, was “loud but indistinct and muffled.” And yet those nine words launched a revolution in how human beings connect with each other — one that, 150 years later, may still be one of the most underappreciated good-news stories of the modern era. 

A nation gets wired

The telephone took off fast. By around 1880, there were roughly 130,000 phones in the United States; by 1900, 1.4 million; by 1910, nearly 6 million. Bell himself demonstrated the device at the 1876 Centennial Exhibition in Philadelphia, where Emperor Dom Pedro II of Brazil picked up the receiver and reportedly exclaimed: “My God, it talks!” (The telegraph company Western Union, less impressed, reportedly declined to buy Bell’s patent for $100,000 — a business decision that ranks alongside passing on the Beatles.)

In the US, the telephone quickly became indispensable. During the 1918 flu pandemic, New York City’s phone traffic spiked to 3.2 million calls a day as quarantined residents relied on the telephone for groceries, medical advice, and human contact. In Los Angeles, tens of thousands of students were set up to receive instruction partly by phone during school closures — arguably the first remote learning. A New York Times editorial marveled: “Less than forty years ago the telephone was an amusing toy … Now, nobody can understand how we lived without it.”

By 1946, half of American homes had a telephone. By 1970, more than 90 percent did. And as a great piece this week in the New York Times by Andrew Heisel noted, for all the disruptions it brought — scammers, prank callers, concerns about disease transmission from the mouthpiece — the telephone provoked remarkably little of the technological panic seen with similarly transformative inventions like the automobile. It was simply too useful to be scared of.

A leapfrog into the future

But for all that, the most important telephone story of the past 150 years isn’t about America at all. It’s about what happened when the telephone finally went mobile — and reached the billions of people who had been left out of the wired revolution entirely.

As of 2000, all of sub-Saharan Africa had fewer telephone lines than Manhattan. The entire region had roughly 1.6 landline connections per 100 people. South Asia was barely better. For much of the developing world at the dawn of the 21st century, Alexander Graham Bell’s invention, already more than a century old, still wasn’t a part of their reality.

Then came mobile phones.

Their explosive growth is one of the most extraordinary in the history of technology adoption. Sub-Saharan Africa went from about 2 mobile subscriptions per 100 people in 2000 to 89 by 2023. South Asia went from less than 1 to 84. Globally, there are now more than 9 billion mobile subscriptions — more connections than human beings on the planet. The developing world skipped past the telephone age and went straight to mobile.

A phone call out of poverty

These weren’t just phones. They were economic lifelines.

The most celebrated example is M-Pesa, a mobile money system launched by Safaricom in Kenya in 2007. M-Pesa lets users send money, pay bills, and save — all through a basic mobile phone, no bank account required.

A landmark 2016 study published in Science by economists Tavneet Suri and William Jack found that M-Pesa had been adopted by at least one person in 96 percent of Kenyan households. More remarkably, access to M-Pesa lifted an estimated 194,000 households — roughly 2 percent of the country — out of extreme poverty. The effects were strongest for female-headed households: some 185,000 women shifted from subsistence farming to business occupations. Today, mobile money platforms handle $1.68 trillion in annual transactions globally, with over 2 billion registered accounts.

Or consider Robert Jensen’s now-classic study of fishermen in the Indian state of Kerala. Before mobile phones arrived in the late 1990s, fishermen would land their catch at the nearest beach with no idea what prices looked like elsewhere. Some markets would have a glut; others, a shortage. Waste ran as high as 8 percent.

But when mobile coverage rolled out, fishermen could call ahead to check prices and choose the best market. Waste dropped to near zero. Their profits rose 8 percent. Consumer prices fell 4 percent. The phones paid for themselves within two months.

The big-picture numbers are staggering. World Bank research has estimated that moving a region from no mobile coverage to full coverage boosts GDP growth by 1.8 to 2.3 percentage points. The GSMA — the global mobile industry body — puts it this way: in 2025, mobile technologies and services generated $7.6 trillion for the global economy, equivalent to 6.4 percent of world GDP.

Mobile health programs have improved medication adherence for HIV patients in Africa. SMS reminders have boosted vaccination rates and prenatal care visits. In the developing world, the phone in your pocket can be a bank, a clinic, a classroom, and a market — sometimes all before lunch.

But those smartphones…

I can hear the objection: What about all the bad stuff? What about teen mental health and doomscrolling and the algorithmic attention trap? What about TikTok!

Jonathan Haidt’s The Anxious Generation made a forceful case that the shift to a “phone-based childhood” around 2010–2015, driven by smartphones and social media, has contributed to rising rates of depression and anxiety among adolescents. The data on teen mental health is genuinely alarming — federal survey data shows that 20 percent of American 12- to 17-year-olds experienced a major depressive episode. And as Heisel wrote, the smartphone — with the internet inside and algorithms engineered for engagement — is qualitatively different from the old landline, whose cord literally kept you tethered.

The science on this is more contested than the headlines suggest, as my Vox colleague Eric Levitz wrote about in 2024, but I don’t think you need peer-reviewed studies to realize that smartphones have changed many aspects of life for the worse, especially for young people. 

Still, what gets lost in the smartphone-anxiety conversation: the people who benefit most from mobile telephony — and the ones who could stand to benefit — are precisely the ones who appear least in Western coverage of the issue.

Some 885 million women in low- and middle-income countries still lack mobile internet access. Closing that gap alone would add an estimated $1.3 trillion in GDP through 2030. For a Kenyan market vendor or an Indian fisherman, a mobile phone isn’t a source of anxiety. It’s the most empowering technology they’ve ever held.

Nine words, 150 years later

Alexander Graham Bell couldn’t have imagined any of this. He reportedly wanted the standard telephone greeting to be “Ahoy!” (Thomas Edison, wisely, overruled him with “Hello.”) He couldn’t have imagined M-Pesa, or a fisherman checking sardine prices from a boat off the coast of Kerala, or a pregnant woman in rural Ghana receiving prenatal reminders by text. He definitely couldn’t have imagined TikTok.

But what Bell would have realized from the start is that his invention could destroy distance. And in just a century and a half, his invention and its successors have connected billions, lifted millions from poverty, saved lives, and created economic opportunity on a scale Bell could never have dreamed of when he shouted those nine words at Thomas Watson.

A version of this story originally appeared in the Good News newsletter. Sign up here!