Xfinity

DOCSIS 3.1

Best Modems for Xfinity: Top Picks Ranked (2026)

Every modem currently approved for Xfinity in 2026, audited against Comcast's official list: what was removed in April, and which model fits your plan.

Aug 1, 20268 min read

Troubleshooting

Xfinity Router Blinking Orange? 7 Fixes for xFi Gateways (2026)

A blinking orange light on your Xfinity router means the gateway cannot connect to the Xfinity network. This guide explains what the light means on the XB6, XB7, XB8, and XB10, and walks you through seven simple fixes, from checking for outages...

Jul 6, 20266 min read

Troubleshooting

How to Fix Lag on Xfinity: Easy Step-by-Step Fixes

Xfinity lag has a few common causes, and most are easy to fix yourself. This step-by-step guide shows you how to stop lag, buffering, and high ping on Xfinity, from quick restarts to modem upgrades, gaming routers, and mesh systems.

Jun 15, 20265 min read

Review

Xfinity Is Removing DOCSIS 3.0 Modems: What It Means and What to Buy

Xfinity is steadily dropping DOCSIS 3.0 modems from its approved list, and unsupported models can stop activating. Learn how to check your modem and pick the right DOCSIS 3.1 replacement by speed tier.

May 29, 20266 min read

Troubleshooting

Technicolor CGM4140 and CGM4981 Modem Lights: Complete Guide and Troubleshooting

A complete guide to what each light color means on the Technicolor CGM4140 and CGM4981 modems, with simple troubleshooting steps for red, orange, green, and blinking white lights.

May 19, 20267 min read

Troubleshooting

CommScope/Vantiva Modem Lights: What They Mean and How to Fix Common Issues

Learn what each CommScope and Vantiva modem light means and follow simple troubleshooting steps to fix offline, blinking, or red light issues.

May 19, 20266 min read

Troubleshooting

Comcast Xfinity Modem Default Password: Admin Login and WiFi (2026)

Every Xfinity gateway ships with two passwords. Here is where each one is printed, how to log in at 10.0.0.1 now that the Admin Tool is off by default, and how to reset both.

Apr 1, 20269 min read

Troubleshooting

Xfinity Modem Blinking Green? How to Fix It Fast (2026)

If your Comcast modem is flashing green, it usually means the device is trying to establish a connection but cannot complete the process. This guide walks you through the most common causes and step-by-step fixes, from simple reboots to signal issues, so...

Apr 1, 20267 min read

Troubleshooting

Xfinity Internet Keeps Dropping? Here's How to Fix It (2026 Guide)

If your Xfinity internet keeps dropping or disconnecting randomly, this guide walks you through every fix, from quick resets to replacing your rental gateway for good.

Mar 31, 20268 min read

Troubleshooting

Xfinity Modem/Router Blinking Orange Light: What It Means and How to Fix It

A blinking orange light on your Xfinity modem means it is trying to connect and failing. Here is what causes it and how to fix it fast at home.

Mar 31, 202613 min read

Troubleshooting

How to Activate a Modem With Comcast Xfinity (Internet and Phone)

A complete guide to activating your own modem on Comcast Xfinity, including online self-activation, phone activation, and how to activate a phone modem for Xfinity Voice service.

Mar 28, 20268 min read

Buying guide

Best Modem-Router Combos for Xfinity (2026) — Skip the Rental

Still renting your Xfinity gateway? Save $180+/year by owning your own modem-router combo. We compare the 5 best Xfinity-compatible options for 2026 — from the budget-friendly ARRIS G34 to the Wi-Fi 7 ARRIS G54 — with specs, pricing, and setup instructions.

Mar 25, 20266 min read

Troubleshooting

Xfinity xFi Gateway Keeps Going Offline? How to Fix It (2026)

If your Xfinity xFi Gateway keeps dropping offline, the problem is usually a loose cable, overheating, or a service outage. This guide walks you through the most common fixes step by step.

Mar 24, 20267 min read

Troubleshooting

Xfinity xFi Gateway Not Working? How to Fix Common XB6, XB7, XB8 Issues

A complete troubleshooting guide for the most common Xfinity xFi Gateway issues, including Wi-Fi drops, slow speeds, bridge mode problems, and overheating on the XB6, XB7, and XB8 models.

Mar 19, 202611 min read

Troubleshooting

What Is DOCSIS 4.0? Speeds, Timeline, and 2026 Availability Guide

DOCSIS 4.0 is officially here, bringing symmetrical multi-gigabit speeds to cable internet for the first time. While fiber remains the gold standard, this massive upgrade to existing coaxial networks supports up to 10 Gbps down and 6 Gbps up. From Comcast’s latest...

Mar 9, 202612 min read

How to Cancel Xfinity Internet Service (2026 Guide)

Canceling your Xfinity internet or TV doesn't have to be a headache. Whether you are moving, switching to fiber, or cutting the cord, use this comprehensive guide to navigate Xfinity's customer retention department, avoid early termination fees, and properly return your rented...

Mar 6, 20264 min read

Setup

Xfinity Can't Activate Your Modem in the App? Fixes and Light Codes (2026)

When the Xfinity app can't activate your modem, the cause is usually the outlet, the approved list, a previous account, or the app itself. Here is how to tell which one from the error message and the modem lights, and how to...

Sep 27, 202512 min read