Who Is the Biggest Telecommunications Company? How the Largest Carriers Compare and Connect San Jose, CA
It depends on how you measure size. China Mobile is the biggest telecommunications company in the world by customers, with roughly a billion mobile subscribers. In the United States, Verizon has been the largest telecom company by annual revenue, with AT&T close behind.
Other measures give different answers. T-Mobile US has led U.S. telecom companies in market value in recent years, and Deutsche Telekom is the largest telecom company in Europe. Rankings shift from year to year, so this guide explains each measure rather than a single winner. It also shows how these national carriers relate to the local businesses that wire your building, such as a Telecommunications Contractor in San Jose, CA.
Whichever carrier you choose, need it connected inside your building?
Request a quoteHow the Biggest Telecommunications Company Is Measured
By customers
China Mobile, a state-owned carrier, serves more mobile customers than any other company in the world, roughly a billion. Its size comes from China’s large population and the company’s dominant share of the market there.
By revenue
Verizon has reported the highest annual revenue of any U.S. telecom company in recent years, at well over $100 billion a year. AT&T follows closely. Worldwide, China Mobile and Deutsche Telekom report revenue in the same general range, so the order can change depending on the year and currency exchange rates.
By market value
Market value reflects what investors think a company is worth. T-Mobile US has passed both Verizon and AT&T in market value in recent years. Because stock prices move daily, this ranking changes the most often.
The Largest Telecommunications Companies
These companies appear most often at the top of telecom rankings.
- China Mobile: the world’s largest mobile carrier by customers
- Verizon: the largest U.S. telecom company by revenue in recent years
- AT&T: a major U.S. wireless and fiber provider, and the established local phone company in much of California
- T-Mobile US: a leading U.S. wireless carrier and the highest U.S. telecom by market value in recent years
- Deutsche Telekom: Europe’s largest telecom company and the majority owner of T-Mobile US
- Comcast: one of the largest internet providers in the U.S. through Xfinity, though much of its revenue comes from media
The Biggest Telecommunications Companies at a Glance
The answer changes depending on the measure and the region.
| Measure | Largest company | Notes |
|---|---|---|
| Customers worldwide | China Mobile | Roughly a billion mobile subscribers |
| Revenue in the U.S. | Verizon | AT&T has been a close second |
| Market value in the U.S. | T-Mobile US | Changes with stock prices |
| Largest in Europe | Deutsche Telekom | Majority owner of T-Mobile US |
| Cable and broadband in the U.S. | Comcast | Also owns media businesses such as NBCUniversal |
Rankings are based on recent company reports and can change from year to year. Check each company’s latest annual report for current figures.
Why Size Matters to Businesses
A carrier’s size affects what it can offer you, but it doesn’t decide everything.
Coverage
Larger carriers usually have wider wireless coverage and more fiber routes.
Availability
Even the biggest carriers don’t offer every service at every address, so availability depends on your building.
Lead times
New business circuits can take weeks to install, regardless of the carrier’s size.
Inside the building
No carrier wires your offices. Service stops at the demarc, and the rest is up to your own cabling.
The Biggest Carriers in San Jose
Several of the largest U.S. telecom companies serve businesses across San Jose.
Phone and fiber
AT&T
The established local phone company in much of California, also offering fiber internet and wireless service.
Cable and broadband
Comcast Xfinity
Cable internet and business services across much of the city.
Wireless
Verizon and T-Mobile
National wireless carriers with coverage throughout San Jose and Silicon Valley.
Every building
The local connection
Whichever carrier you choose, its service still has to be extended and cabled inside your building.
Choosing the Local Contractor Who Connects Them
The biggest carriers bring service to your building, but a local telecommunications contractor connects it to every desk, access point and phone inside. Picking that contractor is a separate decision from picking a carrier. Our guide How Do I Choose a Telecommunications Contractor in San Jose explains what to look for.
The Biggest Telecommunications Company Depends on the Measure
China Mobile is the biggest by customers, Verizon has led U.S. telecom companies by revenue, T-Mobile US has led by market value, and Deutsche Telekom is the largest in Europe. Each of these rankings can change from year to year.
In the U.S., a handful of these carriers dominate the market. Our guide Who Are the Big Four Telecom Companies explains which companies are usually included and why.
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