Brand Overview: quantumfiber
Quantum Fiber is a high-speed telecommunications brand providing fiber-optic internet to residential and small business customers. The brand was launched in 2020 by Lumen Technologies (formerly CenturyLink) as its flagship consumer fiber service. In 2025, it was announced that AT&T would acquire Lumen's mass markets fiber business, including the Quantum Fiber brand.
Contact Info
Customer Support Phone: 1-833-250-6306
Customer Support Email: [email protected]
Note: Many users have reported that the support email is frequently unresponsive or inactive, and phone support may involve long wait times.
Industry and Operations
Quantum Fiber operates within the telecommunications and internet service provider (ISP) industry. The company focuses on delivering high-bandwidth, low-latency internet connections using extensive fiber-optic networks, aiming to replace older copper-based internet infrastructure.
- Residential fiber internet plans (ranging from 500 Mbps to multi-gigabit speeds)
- 360 WiFi mesh technology and equipment rentals
- Business fiber internet solutions
- Digital phone (VoIP) services
User Sentiment
Overall user sentiment for Quantum Fiber is highly mixed and leans negative on third-party consumer review platforms. While the underlying fiber technology is capable of high speeds, a large volume of user reviews focus on widespread frustration regarding network reliability, difficult administration, and ineffective customer service.
- Service Outages: Customers frequently complain about unexpected internet drops and prolonged outages that take days to resolve.
- Customer Support Difficulties: Many users report exceptionally long hold times, dropped calls, and offshore support agents who are unable to resolve complex technical or billing issues.
- Technician Mishaps: A common complaint involves technicians accidentally disconnecting an existing customer's line while setting up service for a neighbor.
- Installation Delays: Users regularly cite missed appointments, delayed installations, and unburied cables left in yards for weeks.
- Equipment and Hardware: Renters often complain that the modems installed by the company are mounted permanently to the wall and cannot be removed upon moving out, alongside complaints about restricted router settings.
- Digital Portal Issues: Customers frequently experience glitches with the official website and mobile app, making it difficult to manage billing or cancel service online.
Share Your Experience
If you've experienced issues with quantumfiber, you're not alone. Share your experience or file a complaint on Xolvie to let your voice be heard.