topic Re: Why did Three start capping my 5G broadband speed? in Broadband

Why did Three start capping my 5G broadband speed?

autopilot — Wed, 20 Mar 2024 12:22:18 GMT

Is there any reason why a few months ago Three started to limit my speed to 120mbps? We use it as our main internet and are relatively heavy users (for a family anyway, sometimes up to 3tb per month). Used to get over 300mbps. I have tested day and night, for weeks, and 120 is the max.

Confirmed it’s out account, as I have tried other 3 SIM’s and same APN, multiple routers (with cell and band locking). When I used a different thee SIM I get the full speed again.

Is is because of heavy use, or some other reason? Anyway to get this limit removed?

Re: Why did Three start capping my 5G broadband speed?

JonathanB — Thu, 21 Mar 2024 12:32:36 GMT

Hi @autopilot,

You shouldn't be running into limited speeds on Three Broadband, but we did recently identify some users were experiencing a 120mbps limit. In all other cases I'm aware of, a fix was rolled out a couple of weeks ago, and rebooting the router should have resolved this.

In case this is persisting, I've sent you a PM to ask for a bit more info.

To view your private messages on the community, click on your avatar image in the top right of any community page, then "Messages".

Thanks,
Jonathan

Re: Why did Three start capping my 5G broadband speed?

fashric — Fri, 22 Mar 2024 13:25:10 GMT

https://community.three.co.uk/t5/Broadband/5G-Broadband-Drastic-Speed-Drop-amp-Throttling-to-120mbps-after-Settings-Changed-by-customer-service/td-p/25814

Re: Why did Three start capping my 5G broadband speed?

lRaVer7l — Wed, 12 Nov 2025 15:10:40 GMT

Hi JonathanB,

I have run into the same problem. It worked fine for about a year and suddenly, It went from 300-450 mbps to less then 100. It doesn't matter what time I do the speed test, even if if the speed test is 2am in the night.

(Just for reference), I have 2 phones on 3 mobile which give me around 300-450 mbps if I position it next to the router, but by router is now only around 80 -100 mbps now. I have rebooted it several times but the speed remains the same.

Can you please help me.

3 mobile should not be advertising this service as unlimited and then capping the speed. I am really annoyed, that 3 are doing this. This speed is now about the same as what i was getting with my broadband before.