topic Re: Mobile 4G home broadbands speeds decreased in Broadband

Mobile 4G home broadbands speeds decreased

Bodger123 — Fri, 09 Jan 2026 16:26:44 GMT

I'm a long-term three customer, and with my 4G SIM in my phone, I got good up and down speeds (125Mbps), so I decided to ditch BT and move to home broadband over 4G.

All was well for the first 6 months, and speeds of 125Mbps continued, but in early December, I noticed things like Netflix were buffering, and after doing speed tests on home broadband and iPhone connected to 4G (not the home broadband WiFi) speeds were about 25Mbps. I obviously got onto Three, and they told me they'd look into it and get back to them in a week, which I did to find no record of my contact. I was told an issue was raised, and I waited another week and nothing. Put in a complaint on the 20th of December as nothing was done. I've just been told it was closed Christmas day because I didn't answer the phone!!

Speeds today are 13.4Mbps and just unusable (I work from home).

What can I do!?!?

Thanks!

Re: Mobile 4G home broadbands speeds decreased

Bodger123 — Fri, 09 Jan 2026 16:31:26 GMT

Reading other posts, coverage checker reports no issues (never has since I started). The router is in the window, and I can even see the 4G mast about 300 metres away.

Re: Mobile 4G home broadbands speeds decreased

PeteG — Sat, 10 Jan 2026 10:04:48 GMT

Hello there.

I generally wouldn't have expected the 4G broadband to regularly reach 125mbps. Somewhere between 20 and 40 is what I've generally seen in my own 4G Broadband tests.

If you're seeing a big reduction in your speeds, it might be worth checking if there's a known issue in the area. You can do that on the service status page.

There's also the possibility that it's simply a limitation of what 4G can currently offer in your local area. It might be worth looking at a 5G Hub instead, assuming 5G is available locally.

Pete.

Re: Mobile 4G home broadbands speeds decreased

Anonymous — Sat, 10 Jan 2026 18:50:28 GMT

When you are next in touch with the Network Team ask them to see if your router has been connecting to the mast you historically got a good connection to and also ask them to check for congestion on the mast that you are currently connected on.

Re: Mobile 4G home broadbands speeds decreased

djs88 — Mon, 12 Jan 2026 15:06:20 GMT

Your connection is being throttled, I have the same issue. With a VPN connected I reliably get speeds of 100-120Mbps, without the VPN I get anything between 5-15Mbps. I raised a support query 7 days ago and have still not heard back.

Re: Mobile 4G home broadbands speeds decreased

Bodger123 — Mon, 12 Jan 2026 16:01:44 GMT

OMG you are right! Just connected to my work VPN and get speeds of about 85Mbps, turned off the VPN on same laptop and back to 13Mbps.... I will get onto them now!

Re: Mobile 4G home broadbands speeds decreased

Ausername — Mon, 20 Apr 2026 06:57:55 GMT

The service trying to throttled our network to make it feel wrong to stay on Three even EE has this Limit

VPN would help the people who want Mobile network to work