Improving Comcast modem signal

@william53b agree 100%. I would go further to say a few choice words. In my area, it is the only option for anything “high speed”. I tried to cut the cord completely a couple of years ago. No avail. I use a Motorola VOIP modem, about as good as it gets based on industry reviews. It’s the easiest solution. I think the Comcast phone system is garbage, and causes a good majority of the issues. Problem is, to “unpackage” the plan, Comcast bends you over without any roses. They limit bandwidth options, or they make it ridiculously expensive to have higher tiered service. The best bet is to use the highest quality cables you can find, optimize the network as a whole as much as possible and hang on. One thing I will say about Comcast, is overall the service is pretty reliable, at least in my area. Rarely is there a full on outage. Speeds that suck at times, but rarely an outage outright.

Be warned that cable modems are soon to be useless - Verizon is now pushing a white cubed wireless 5G device to feed signals to everything with no cables at all. If this works, and I have no doubt that it does, we luddites using pcs and flip phones will be forced into smartphone land whether we wish to be or not.

@steakster is right.

I misread and answered your question thinking you had an issue with your home router. For a cable modem, it has to be compatible with Comcast and that its mac address must be registered with them.

I had done the same thing with an Arris modem I had, before I switched over to business service with Comcast. It is more expensive but business service gets higher priority and better customer service over normal residential service.

"Verizon is now pushing a white cubed wireless 5G device to feed signals to everything with no cables at all."

They've had this for probably two years, although as you say, they've been pushing fixed 5G signals lately.

If you can get Verizon fiber (FIOS), you'll still get faster and more consistent internet than a 5G wireless signal   

Within your house, you'll get a more consistent and faster internet if you used Ethernet instead of WiFi, although it becomes a problem if your house is not already wired for Ethernet.