Tucked inside the fine print of nearly every 5G home internet ad is a number most buyers never see: network priority.
T-Mobile and Verizon will happily sell you a $50-a-month gateway that promises "broadband without the cable guy," but your traffic sits in a lower queue than the phone in your pocket.
When the neighborhood tower gets busy at 8 p.m., your 4K stream is the first thing to stutter.
Carriers spent billions on mid-band spectrum, and the math only works if they oversell it.
Fixed wireless customers are cheap to acquire and easy to throttle, which makes them the perfect shock absorber for congestion that phone subscribers would scream about.
The FCC has quietly collected complaints about this for two years, and the pattern is consistent: speeds that look great on day one and sag by month three.
Most gateways are locked down — no bridge mode, no external antenna port, no way to see which band you're actually camped on.
If your window happens to face away from the tower, you're stuck.
Compare that to a $70 router you can mount, aim, and monitor, and the "free equipment" pitch starts to look like a leash.
Speeds also swing wildly by address in ways carriers won't quote upfront.
A house two blocks over can pull 400 Mbps while yours crawls at 40, and customer service will blame your walls, your devices, your expectations — anything but the capacity math.
Independent testers have documented this for years.
Before you cancel cable, run a 14-day trial and test at 7 to 10 p.m., not at noon.
Check whether the gateway supports external antennas.
Ask, in writing, whether your plan is deprioritized and at what threshold.
If a carrier won't answer, that's your answer.
There's a real place for this technology.
Rural households with no fiber option are genuinely better off, and cord-cutters who mostly browse will rarely notice.
But the marketing has gotten ahead of the physics, and the people selling it know exactly where the ceiling is.
Final Thoughts
The pitch was never "unlimited internet." It was "internet we can afford to slow down." Until carriers publish real congestion data by ZIP code, treat every glowing speed test in those commercials the way you'd treat a test drive on a closed track — impressive, controlled, and nothing like your commute.