Quantum Fiber is affordable but not available in many places.
5 min readFormerly sold under the CenturyLink name, Lumen's Quantum Fiber is an affordable fiber option (offering symmetrical speeds) for internet seekers in the West, Midwest, and Florida. There are no contracts or data caps, so no running into hidden cancellation or overage fees. “The speed is fast and fairly reliable,” says Rob, a public telecom worker and Quantum Fiber customer in the Pacific Northwest. “I have not had any extended outages.”
But Quantum Fiber’s customer service can be hot and cold, and its limited service area makes it impractical for those who plan to move.
Why you can trust us
At Reviews.org, our team takes its editorial independence seriously. We may earn money when readers click affiliate links, but we don't work for our brand partners, and they don’t approve our pieces before publication. To learn more, visit our About us page.
Share your experience and rate your internet provider
Your feedback helps others find the right internet provider. Whether your experience was great, frustrating, or somewhere in between, we want to hear about it.
Our breakdown of Quantum Fiber features
For all our internet reviews, we give a rating based on three main criteria—speed and reliability, dollar value, and customer experience—which we then average to make an overall score.
Want to know how Quantum Fiber stacks up? See our full take below.
Overall score: 4.0/5
Speed and reliability
4.0/5
Quantum Fiber customer Rob says the service is “fast and reliable.”
Similarly, Jake, who works for a local municipality in Orlando, likes his Quantum Fiber service because of the “fast speeds and low price.”
On the other hand, Quantum Fiber customer Joe, an at-home worker in the insurance industry in Bellevue, Florida, finds his internet unreliable. “Service has hiccups A LOT, which is problematic for people that work from home,” he vents. “Upload drops all the time, and multiple higher-tier employees have ignored and yet to explain why it happens.”
In summary, Quantum Fiber seems fast and reliable enough for most customers, but it may depend on your service area. Before you sign up, check with those who already have the service near your address.
“The speed is fast and fairly reliable.” -Quantum Fiber customer in the Pacific Northwest
Other Quantum plans
In certain areas, you can also get 1, 3, or 8Gbps plans—but they aren’t widely available at the moment, and you have to have ultra-modern Wi-Fi 7 equipment.
Dollar value
4.3/5
Every customer we spoke with has had one issue or another with Quantum Fiber customer service.
Quantum customer service is “terrible,” according to Jake, who adds that agents “just read off a script. Not much help at all.”
Joe in Florida calls Quantum Fiber's customer service “not the greatest since my only interactions with Quantum are with techs that don't ever get back to me.”
Customers also speak of installation snafus. “It took three trips from their technicians to get the install completed and working properly,” says Rob.
However, CableTV.com found in its 2024 internet customer satisfaction survey that Quantum Fiber customers were actually the happiest with their service (at 89% satisfaction).
This may be due to unhappy customers switching to other ISPs, leaving behind only the content ones. Or most Quantum customers may simply be happier than the ones we spoke with.
How long it took to get a real human on the phone: I couldn’t reach a customer service agent. The phone bot stopped my progress at 0:44 when I couldn't produce a Quantum Fiber account number.
How the chat service is: It’s so-so—it offers a truncated list of options to get started, severely limiting what I could communicate.
Customer experience
3.8/5
Quantum Fiber offers excellent value for each dollar. Quantum Fiber’s plans range from $45 per month for 200Mbps to $165 per month for 8,000Mbps. Mid-range options include 500Mbps for $50, 940Mbps (or 1 Gig) for $75, 2 Gigs for $95, and 3 Gigs for $100 per month. Keep in mind, prices may vary depending on your location.
Quantum Fiber also comes with a Price for Life guarantee, so when you sign up at a certain price point, it’s yours until either you cancel or Quantum discontinues your plan. You can even get the Price for Life guarantee on Quantum's low-income internet option, starting as low as $30 per month for up to 200Mbps.
“It seems like a good deal,” says customer Rob, and he’s right. Rob signed up for the 940Mbps plan with CenturyLink, marketed at $75 per month, before being moved to Quantum Fiber. Not to sound like a broken record, but $75 for nearly a whole Gbps is a great price, especially since Quantum Fiber has no contracts or extra fees.
So do you get a good deal from Quantum Fiber? Yes, you do! Quantum offers market-based pricing, so Quantum's prices will depend on your location. And while we can't offer official prices for Quantum's internet packages, we can give example of prices sourced from specific locations. For example, in some areas, Quantum currently charges around $50 for 500Mbps, which is quite good. And Quantum Fiber’s fastest plan is comparable to a similar option from Google Fiber (the gold standard for fiber providers): 940Mbps for around $75 from Quantum versus 1,000Mbps for $70 from Google.
Around 500Mbps is the perfect speed for most residences, but Google Fiber doesn’t even offer a 500Mbps plan, while Quantum Fiber does. So in some cases, Quantum might be a better choice than Google.
Check out our guide on the cheapest Quantum Fiber Internet plans so you can save money on your home Wi-Fi.
Overall quality: 4.0/5
Quantum Fiber can be fast and reliable (though it isn’t always).
It’s priced well.
But the customer service leaves something to be desired.
Hide
See all Quantum Fiber plans and deals
Customer Reviews
Quantum Fiber Review
I've had a great experience with Quantum Fiber. It's affordable, fast and reliable for everything I do online — WFH, streaming, browsing. I was also very impressed with the customer service. The gentleman who worked for Quantum Fiber worked with my to troubleshoot issues for as long as it took
Sage | Eagle, ID
Submitted 5/1/2025
4 since it's good but not the best
I think it's competitively priced unlike other providers. It works well 90% of the time. If you like gaming, you need to be hardwired, wireless has lag off and on. It's much better than DSL century link which I used to have. Download speeds are alright and it handles bandwidth well.
Zach | Hurricane, UT
Submitted 6/2/2025
Good speed sometimes unreliable
the service is good but often outages occur and frequent system changes that need a technician to come fix.
Jacob | Lehigh Acres, FL
Submitted 8/19/2025
Quantum? Don't do it.
When I first got Quantum it was great. Since then, their business model appears to be "When you f up, raise prices." When it works, it's great. When it doesn't, you're on chat with customer service at 2am because it's the only time they're free but they can't actually fix
Jenny | Colorado Springs, CO
Submitted 7/6/2025
Misleading sales personnel
Was told I could get internet with Quantum and TV service for a total of $150.00 forever. This is not true.
Bill | Kelso, WA
Submitted 8/30/2025
Quantum Fiber vs. the competition
As a fiber provider, Quantum Fiber smokes the non-fiber competition. It also holds its own against other fiber internet providers, even Google Fiber. When it comes to Cox vs. Quantum Fiber, Cox offers a solid alternative if fiber isn't available in your area with some of the fastest cable speeds.
Quantum's biggest pitfall compared to its competition is that it's not widely available. You can get Quantum Fiber in only a small portion of the United States. So if you need to move, you can kiss your Quantum service goodbye.
Another option in the Midwest is Nextlink Internet.
Quantum Fiber at a glance
Other internet providers
Offers and availability vary by location and are subject to change. Data verified as of the article's publication date.
*
Prices exclude taxes, surcharges, usage-based charges, certain equipment, and other fees or charges, which are subject to change.
†
Price after $5/mo Autopay & Paperless bill discount (w/in 2 bills). Plus taxes $ fees. Limited availability. May not be available in your area.
‡
Plus taxes and fees. Upload/download speed and device streaming claims are based on maximum wired speeds. Actual Internet speeds are not guaranteed and may vary based on factors such as hardware and software limitations, latency, packet loss, etc.
^
Limited time offer; subject to change; valid to qualified residential customers who have not subscribed to any services within the previous 30 days and who have no outstanding obligation to Charter.
°
w/ Auto Pay. Regulatory fees included in monthly price for qualified accounts. See full terms.
What we learned from real customers
Most customers like Quantum Fiber just fine but aren't impressed with parts of the customer service. Here's a snapshot of how most customers feel about Quantum Fiber:
- No-frills fiber internet plans
- Fast overall speeds
- Quantum Fiber app struggles with modern equipment
- Disappointing installation experience
Rob calls Quantum Fiber a "no-frills fiber internet service." His opinion isn't just based on using the service—he also crosses paths with Quantum in his job as a public telecom worker in the Pacific Northwest. "I work in the field and deal professionally with CenturyLink and Lumen."
Jake in Orlando's feelings are more mixed. He says his service offers "great fast speeds," but he's frustrated that his Wi-Fi 7 equipment (read: some of the latest and greatest internet hardware) isn't compatible with the Quantum Fiber app.
“They over promise and under deliver.” —Joe
The biggest complaint we heard about Quantum Fiber? Installation. We even live-followed a new customer named D.P.’s installation process in Denver, with disappointing results.
“Quantum is 30 minutes late from the appointment window,” D.P. told Reviews.org on installation day. Then, two hours later: “Window was 8:00 am–11:00 am; it’s now 1:20 pm.”
The Quantum Fiber technician was not only late, they didn't even phone ahead to let D.P. know. Due to the hassle, D.P. canceled the service instead of rescheduling the installation.
Need to contact Quantum Fiber?
Here’s how to reach ’em:
Quantum also encourages contact through its social media accounts.
Our fact-based research process centers on interviews with internet customers across the country, helping us understand how internet services hold up against diverse needs and challenges.
To put together this review, we spoke with several Quantum Fiber customers and a Lumen spokesperson, delved into Quantum Fiber service offerings, and looked at our proprietary speed data and several trustworthy customer surveys. For a deeper look at our review process, check out How we test internet providers.
Ready to sign up for Quantum Fiber?
Quantum Fiber is available in parts of the Midwest and West—and, for some reason, in Florida. Check out its plans and deals in your area.
FAQ
No, Quantum Fiber and CenturyLink aren’t the same, though both are owned by Lumen. Lumen is gradually replacing CenturyLink’s fiber service with Quantum Fiber.
Quantum Fiber has several pros:
- Affordable pricing
- Symmetrical speeds
- Price for Life guarantee
- No extra charge for installation or equipment.
Some cons:
- Poor customer service
- Difficulty reaching agents
- Overall unhelpful support
Quantum Fiber offers symmetrical speeds ranging from 200Mbps to 8,000Mbps, meaning each package provides the same download and upload speeds.
Related Articles
AT&T Cell Phone Plans and Deals
Learn more about AT&T’s postpaid, prepaid, and exclusive plans for seniors.
Best Family Cell Phone Plans
Family cell phone plans offer advantages over traditional plans like cheaper prices and parental controls....
Xfinity TV Equipment
Learn about the Xfinity TV equipment required to get cable service. We'll talk prices, features,...
Cable vs. Satellite TV: Which One Is More Reliable?
Find out if cable television is better than satellite television for installation, pricing, channels, equipment,...
Devin | North Salt Lake, UT