Comcast already streams 4K content to Samsung's most recent TVs with its Xfinity in UHD app, but soon the cable company will produce its own 4K set-top box. Today Comcast announced that this device, ...

If your Xfinity cable box keeps freezing when you scroll through the guide or change channels, it can be caused by software glitches, outdated firmware, or signal interference. This guide covers all ...