10 Best Xfinity Modem For Voice And Internet 2026 in the United States
#1
Winner
Arris (G20) - Cable Modem Router Combo - Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1.0 Gbps Max Speeds, Next-Generation Upload Optimized
The ARRIS G20 is a solid choice for anyone in need of a cable modem and router combo, particularly if you’re using Comcast Xfinity or similar providers. One of its main strengths is its DOCSIS 3.1 technology, which offers significantly faster speeds and better performance compared to older standards. This means smoother streaming, quicker downloads, and reduced lag during gaming, making it a good fit for households with multiple users or devices.
Rating
10.0
Chosen by1,363
Speed
Ethernet Ports
Most important from
196 reviews
#2
Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed
The Arris S33-RB is a DOCSIS 3.1 cable modem designed to deliver fast internet speeds up to 2.5 Gbps, which is great if you have a high-speed plan with cable providers like Xfinity, Cox, or Spectrum. It supports multiple OFDM channels, which helps with stable and efficient data handling, reducing lag during activities like gaming. This modem has two Ethernet ports for wired connections, ideal if you want reliable connections for devices like computers or gaming consoles. However, it does not have built-in Wi-Fi, so you'll need a separate router if you want wireless internet in your home. Also, it doesn’t support voice services, so it can't replace a cable phone line.
#3
Motorola MG8725 WiFi 6 Router + Multi-Gig Cable Modem | 2-in-1 Device | Approved for Comcast Xfinity, Cox, Spectrum| Up to 6000 Mbps | DOCSIS 3.1 | AX6000
The Motorola MG8725 is a strong choice if you need a single device that works as both a cable modem and a Wi-Fi 6 router, approved for Comcast Xfinity and similar providers. It supports the latest DOCSIS 3.1 standard, which means it can handle very fast internet plans and is backward compatible with older DOCSIS 3.0 setups. This modem-router combo offers fast speeds up to 6000 Mbps and includes one 2.5 Gigabit Ethernet port plus three 1 Gigabit ports, making wired connections for devices like gaming consoles or smart TVs quick and simple.
Rating
8.8
Compatibility
Speed
Wi-Fi Capability
Most important from
479 reviews
Top 10 Best Xfinity Modem For Voice And Internet 2026 in the United States
#1
Winner
Arris (G20) - Cable Modem Router Combo - Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1.0 Gbps Max Speeds, Next-Generation Upload Optimized
Arris (G20) - Cable Modem Router Combo - Fast DOCSIS 3.1 Multi-Gigabit WiFi 6 (AX3000), Approved for Comcast Xfinity, Cox, Spectrum & More, 1.0 Gbps Max Speeds, Next-Generation Upload Optimized
Compatibility: Comcast Xfinity
DOCSIS Standard: DOCSIS 3.1
Speed: 1 Gbps
Wi-Fi Capability: Wi-Fi 6
Chosen by 1363 this week
Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed
Arris (S33-RB) - Cable Modem - DOCSIS 3.1 Multi-Gigabit Cable Modem for Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 4 OFDM Channels 1 Year Warranty - Renewed
Compatibility: Charter, Comcast, Cox, Most Regional Cable
DOCSIS Standard: DOCSIS 3.1
Channel Bonding: multiple OFDM channels
Voice Support: No
Speed: 2.5 Gbps
Wi-Fi Capability: No
Number of Ethernet Ports: 2
Security Features: improved security in DOCSIS 3.1
Motorola MG8725 WiFi 6 Router + Multi-Gig Cable Modem | 2-in-1 Device | Approved for Comcast Xfinity, Cox, Spectrum| Up to 6000 Mbps | DOCSIS 3.1 | AX6000
Motorola MG8725 WiFi 6 Router + Multi-Gig Cable Modem | 2-in-1 Device | Approved for Comcast Xfinity, Cox, Spectrum| Up to 6000 Mbps | DOCSIS 3.1 | AX6000
Compatibility: Comcast Xfinity and similar providers
DOCSIS Standard: DOCSIS 3.1
Voice Support: Supports voice over IP, no voice ports
Speed: Up to 6000 Mbps
Wi-Fi Capability: Wi-Fi 6
Number of Ethernet Ports: 1 2.5G, 3 1G Ethernet ports
Security Features: Parental controls, malware blocking, WPS
NETGEAR Nighthawk Cable Modem with Voice (CM1150V) - Certified for Xfinity by Comcast Internet & Voice Plans Up to 800Mbps | 2 Phone Lines | 4 x 1G Ethernet Ports | DOCSIS 3.1
NETGEAR Nighthawk Cable Modem with Voice (CM1150V) - Certified for Xfinity by Comcast Internet & Voice Plans Up to 800Mbps | 2 Phone Lines | 4 x 1G Ethernet Ports | DOCSIS 3.1
Compatibility: Xfinity Internet & Voice
DOCSIS Standard: DOCSIS 3.1
Channel Bonding: 32x8
Voice Support: Two phone lines
Speed: Up to 2Gbps
Number of Ethernet Ports: Four
Netgear CM2050V-100NAR Nighthawk Multi-Gig 2.5Gbps Cable Modem for Xfinity Voice (Renewed)
Netgear CM2050V-100NAR Nighthawk Multi-Gig 2.5Gbps Cable Modem for Xfinity Voice (Renewed)
Compatibility: Xfinity internet and voice services
DOCSIS Standard: DOCSIS
Voice Support: Yes
Speed: 2.5 Gigabits per second
Number of Ethernet Ports: 2
Security Features: Basic security features
Related Products
Up to 14% off
![ARRIS (SB6190) - Cable Modem - DOCSIS 3.0 32x8 Gigabit Modem, [Check with your provider for compatibility]1 Gbps Port, 800 Mbps Max Speed, 2 Year Warranty - Black](https://images-proxy.bestreviews.guide/Wr_tuk2txQCsgDeM6x5pRpk-Wrs=/0x300/https://m.media-amazon.com/images/I/31oIfRGLtRL._AC_CX679_.jpg)
Motorola MT7711 (24X8) Cable Modem-Two Phone Ports Router, DOCSIS 3.0 Modem, AC1900 Dual Band Wi-Fi Gigabit Router for Comcast Xfinit
Motorola MT7711 (24X8) Cable Modem-Two Phone Ports Router, DOCSIS 3.0 Modem, AC1900 Dual Band Wi-Fi Gigabit Router for Comcast Xfinit
Compatibility: Comcast Xfinity
DOCSIS Standard: DOCSIS 3.0
Speed: up to 400 Mbps
Voice Support: Yes
Wi-Fi Capability: AC1900 dual-band
Ethernet Ports: 4
ARRIS (SBG10) - Cable Modem Router Combo - DOCSIS 3.0 16 x 4 Gigabit & AC1600 WiFi, [Check with your provider for compatibility]400 Mbps Max Internet Speeds
ARRIS (SBG10) - Cable Modem Router Combo - DOCSIS 3.0 16 x 4 Gigabit & AC1600 WiFi, [Check with your provider for compatibility]400 Mbps Max Internet Speeds
Compatibility: Comcast Xfinity, Cox, Spectrum
DOCSIS Standard: 3.0
Channel Bonding: 16x4
Speed: 400 Mbps
Wi-Fi Capability: AC1600
Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)
Motorola MB8600 DOCSIS 3.1 Gig-Speed Cable Modem Plus 32x8 DOCSIS 3.0. Approved by Comcast Xfinity, Cox, and More, Gray (Renewed)
Compatibility: Comcast Xfinity, Cox internet
DOCSIS Standard: 3.1
Channel Bonding: 32 downstream, 8 upstream channels
Speed: up to 1 Gbps
Number of Ethernet Ports: 1
Security Features: Broadcom chipset protection
NETGEAR Cable Modem CM700 - Compatible with All Cable Providers incl. Xfinity, Spectrum, Cox | for Cable Plans up to 800Mbps | DOCSIS 3.0
NETGEAR Cable Modem CM700 - Compatible with All Cable Providers incl. Xfinity, Spectrum, Cox | for Cable Plans up to 800Mbps | DOCSIS 3.0
Compatibility: Xfinity, Spectrum, Cox, US cable
DOCSIS Standard: DOCSIS 3.0
Channel Bonding: 32x8
Voice Support: No
Speed: Up to 800Mbps
Wi-Fi Capability: No
Number of Ethernet Ports: 1
Security Features: Basic
#10
NETGEAR CM600 (24x8) DOCSIS 3.0 Cable Modem. Max Download speeds of 960Mbps. Certified for XFINITY by Comcast, Time Warner Cable, Cox, Charter & More (CM600-1AZNAS)
NETGEAR CM600 (24x8) DOCSIS 3.0 Cable Modem. Max Download speeds of 960Mbps. Certified for XFINITY by Comcast, Time Warner Cable, Cox, Charter & More (CM600-1AZNAS)
Compatibility: Xfinity, Cox, Spectrum
DOCSIS Standard: DOCSIS 3.0
Channel Bonding: 24x8
Speed: 960 Mbps
Number of Ethernet Ports: 1
Recommended lists
Top rated
Modem For Wow Internet
How do we rank products for you?
Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.
Buying Guide for the Best Xfinity Modem For Voice And Internet
Choosing the right Xfinity modem for voice and internet involves understanding your specific needs and the technical specifications that will best meet those needs. A modem is a device that connects your home network to your Internet Service Provider (ISP), and it can also support voice services if you have a bundled plan. The right modem ensures you get the best possible internet speeds, reliable connectivity, and clear voice calls. Here are the key specifications to consider when selecting an Xfinity modem for voice and internet.CompatibilityCompatibility refers to whether the modem works with your ISP, in this case, Xfinity. This is crucial because not all modems are designed to work with all ISPs. To ensure compatibility, check if the modem is listed on Xfinity's approved modem list. This guarantees that the modem will work seamlessly with Xfinity's network and support all the services you subscribe to, including internet and voice.
DOCSIS StandardDOCSIS (Data Over Cable Service Interface Specification) is the technology standard used by cable modems to provide internet access. The most common standards are DOCSIS 3.0 and DOCSIS 3.1. DOCSIS 3.0 is suitable for most users and supports speeds up to 1 Gbps, while DOCSIS 3.1 is the latest standard and supports speeds up to 10 Gbps, making it more future-proof. If you have a high-speed internet plan or want to ensure your modem remains relevant for years to come, opt for a DOCSIS 3.1 modem.
Channel BondingChannel bonding refers to the number of downstream and upstream channels a modem can use simultaneously. More channels mean higher potential speeds and better performance during peak usage times. Modems typically offer 8x4, 16x4, 24x8, or 32x8 channel bonding. For basic internet usage, 8x4 or 16x4 may suffice. However, for higher speeds and more reliable performance, especially if you have multiple devices connected, consider a modem with 24x8 or 32x8 channel bonding.
Voice SupportVoice support means the modem includes telephone jacks to connect your home phone service. This is essential if you have Xfinity Voice service. Look for modems labeled as 'telephony modems' or 'eMTA' (Embedded Multimedia Terminal Adapter). These modems are specifically designed to handle both internet and voice services, ensuring clear and reliable phone calls.
SpeedThe speed rating of a modem indicates the maximum internet speed it can handle. This should match or exceed the speed of your Xfinity internet plan. For example, if you have a 300 Mbps plan, ensure the modem supports at least 300 Mbps. Higher speed ratings are beneficial if you plan to upgrade your internet plan in the future or have multiple users and devices that require high bandwidth.
Wi-Fi CapabilitySome modems come with built-in Wi-Fi routers, while others are standalone devices that require a separate router. A modem with built-in Wi-Fi can be convenient and save space, but a separate router often provides better performance and more features. If you have a large home or many devices, consider a separate high-quality router for better coverage and speed.
Number of Ethernet PortsEthernet ports allow you to connect wired devices directly to the modem for a more stable and faster connection. Most modems come with at least one Ethernet port, but some offer multiple ports. If you have several devices that benefit from a wired connection, such as gaming consoles or desktop computers, look for a modem with multiple Ethernet ports.
Security FeaturesSecurity features in a modem help protect your network from unauthorized access and cyber threats. Look for modems that offer features like built-in firewalls, WPA3 encryption, and automatic firmware updates. These features ensure your network remains secure and up-to-date with the latest security protocols.