I’m not going to begrudge anyone for using the modem and router that their ISP provides them. You shouldn’t—because you’re probably paying your ISP to “rent” a device that isn’t very good—but not ...

Struggling with slow speeds, random dropouts, or dead zones? From the Xfinity app’s built-in diagnostics to pro-level hardware tweaks, you can take control of your home network. Learn how to pinpoint ...