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Availability: 7 days a week | 7 a.m. – 11 p.m. CST
Quantum Fiber business customer service & technical support
Find fast answers, technical troubleshooting, and direct contact channels for your Quantum Fiber ® from AT&T business account. Call Quantum Fiber now at the phone number below for quick customer assistance.
Choose your support path
Here are the different ways you can get in touch with our team—we’re here to help!
Live chat
Connect with a digital representative for real-time assistance. It is often the most efficient way to handle account updates or simple technical questions.
Available on the Quantum Fiber website, within your Account Portal, or via the 360 WiFi™ App.
Social support
For non-urgent inquiries or follow-ups, you can reach the support team through official social media channels. Send a direct message to get started:
Facebook: Quantum Fiber Messenger
Instagram: @QuantumFiber
Troubleshooting your Quantum Fiber business connection
When your business internet slows down or cuts out, we know it can throw everything off—not just your browsing. Before reaching out to Quantum Fiber business support, try these quick, simple steps to help identify the issue and get you back up and running fast.
Step 1: Diagnose performance with a speed test
Determine if the issue is a total outage or a localized performance dip. A speed test provides the data our Quantum Fiber business customer service team needs to help you faster.
- Run a desktop test: Visit the Quantum Fiber Speed Test page to check your current upload and download rates.
- Use the app: For the most accurate reading of the signal reaching your building, check the "Total Network Speed" directly within the Quantum Fiber 360 WiFi App.
Step 2: Check for local outages
If your entire network is down, the issue may be external. You can quickly verify service status without waiting on hold:
- What do I do if there is an outage? If a confirmed outage is affecting your area, Quantum Fiber technicians are likely already working on a fix. Monitor the outage tool for an Estimated Time of Restoration (ETR). If no outage is listed but you have no service, proceed to the hardware reset in Step 3.
Step 3: Perform a professional hardware reset
If the network is active but your office is offline, a sequential power cycle often clears the "digital cobwebs" in your equipment.
- Restart the SmartNID: Unplug the power cord from your SmartNID (the device where the fiber enters the building), wait 30 seconds, and plug it back in.
- Reset 360 WiFi Pods: Unplug your pods and wait for the SmartNID to show a steady light before plugging them back in.
- Isolate the Issue: Determine whether the problem affects your entire office or just a single workstation. If one laptop is slow while others are fast, the issue is likely the device, not your Quantum Fiber business support hardware.
Step 4: Review status lights
Your equipment communicates through LED indicators. For a full breakdown of what blinking or solid colors mean for your specific model, refer to the 360 WiFi Troubleshooting Guide.
The Quantum Fiber app and portal
Managing your Quantum Fiber business support shouldn't require a phone call for every minor update. These digital tools give business owners and office managers instant control over their network and account details from any location.
The Quantum Fiber app
The fastest path to resolving common connectivity issues is right in your pocket.
- Run instant speed tests.
- View, schedule, or reschedule technician visits without waiting on hold.
- Access the Live Chat feature immediately (the most reliable way to bypass browser-based chat blockers).
- Check your local service status and get troubleshooting steps for your 360 WiFi pods.
The online account portal
For billing, account updates, and all the behind-the-scenes stuff, the Online Account Portal is your go-to spot.
- View current and past invoices, update your business credit card on file, or enroll in AutoPay.
- Update your primary contact information or change your account password.
- Access technical specifications and manuals for your specific SmartNID and hardware.
- Review your current plan and explore scaling options as your business grows.
Self-service quick links
Select an option below to find specific resources to get Quantum Fiber business support.
Billing & Account
View invoices, update payment methods, or manage your business profile.
Equipment Support
Find out more about your fiber-ready setup, including whether you have a Wi-Fi-capable modem or a permanently installed SmartNID device, along with 360 Wi-Fi pods.
Orders & Moving
Track a new installation, upgrade your bandwidth, or move services to a new office.
Quantum Fiber business support FAQ
Our goal is to get your business back online as quickly and smoothly as possible. Here are answers to some of the most common questions about Quantum Fiber business support, installation, and technical details.
How long does installation take?
In most cases, your business can be up and running within 3–5 business days after placing your order. Timing can vary depending on technician availability and whether your location is already set up for fiber. You’ll be able to track your appointment easily through the Quantum Fiber app.
Is Quantum Fiber business a shared or dedicated connection?
Quantum Fiber business uses a shared connection, which helps keep costs affordable while still delivering fast, reliable speeds for small and mid-sized businesses. If you need a fully dedicated connection, our business team can help you explore those options.
What happens to my business internet during a power outage?
Your fiber line itself will still have signal, but your equipment (like your modem and Wi-Fi pods) needs power to work. If staying online during outages is important for your business, using a backup power source like an uninterruptible power supply (UPS) can help keep things running.
Is there a service level agreement (SLA)?
Quantum Fiber business doesn’t typically include a formal SLA like larger enterprise plans, but helping you stay connected is still a top priority. Our support team works quickly to resolve issues and minimize downtime.
What should I do if my internet goes out?
Start by checking the Outage Tool or the Quantum Fiber app to see if there’s a known issue in your area. If there is, our team is already working on it—no need to call. If not, you can try a few quick troubleshooting steps or reach out to us directly at 833-811-9788 for help.