This topic

Full fibre broadband speed

Gorsoft — Thu, 19 Feb 2026 21:00:03 GMT

Just upgraded my BT broadband to full fibre 2 days ago. All seems good except the speed. I’m on the 700-900 mbps tariff but so I’ve seldom exceeded 300 on my direct connection to my computer. The engineer said it needs to settle down, give it 10 days. Is it going to suddenly get faster? Do I need to be patient?

Re: Full fibre broadband speed

iniltous — Thu, 19 Feb 2026 21:18:32 GMT

It’s nonsense that the tech said give it 10 days to settle down , clearly has no understanding of what they were installing, FTTP delivers the paid for speed from the start .
Assuming your equipment isn’t the culprit (your PC or the Ethernet cable you are using ) then try at what will be a quiet time to eliminate congestion (it’s almost certainly not this ) do a speed test after 9pm if it’s the same it’s not congestion, which only really leaves your account incorrectly set up (as 300Mb instead of 900Mb ) or a fault on the PON ….if your very near neighbours have FTTP (not necessarily from BT but on Openreach ) ask if they are having any noticeable reduction in speed compared to the speed they buy .

Re: Full fibre broadband speed

Kodikid — Thu, 19 Feb 2026 21:21:02 GMT

You say you upgraded your broadband...are you still using the same router?

Re: Full fibre broadband speed

Gorsoft — Fri, 20 Feb 2026 08:39:21 GMT

Yes, no change to my setup.

Re: Full fibre broadband speed

Gorsoft — Fri, 20 Feb 2026 08:46:38 GMT

Thanks for that. I checked my hub setup - it says the WAN connection is 1000. I guess that rules out that it has been incorrectly setup as a 300mbps connection?

My neighbour is having his full fibre setup today (the cabling was setup for the whole road at the same time and we're on the same "circuit", so I'll check with him what speed he is getting.

I've got a BT Smart Hub 2 - the engineer said it wasn't the latest model - no port was marked as WAN but he put the ethernet connection in port 4 and changed some setting in the router - not sure what, I'm no techie.

Failing all this I'll contact BT.

Re: Full fibre broadband speed

gg30340 — Fri, 20 Feb 2026 09:03:23 GMT

While the Smarthub has been exceeded by the Smarthub2 it should still be capable of achieving your package speeds.

Use the speed tester Fast.com. It is the one used by Openreach.

Before doing that it might be worth doing a factory reset on your Smarthub then carry out the speed test.

If it is lower than 850Mbps there is a problem. It may be your package speed has not been set correctly. If that is the case you will need to contact BT 0330.1234.150 and inform then that the install is not correct.

Re: Full fibre broadband speed

iniltous — Fri, 20 Feb 2026 09:17:59 GMT

The WAN connection speed isn’t your profile speed , it’s the speed the ONT and router talk to each other , not the ONT to the headend in the exchange , so it’s not proof either way of your connection set as 1Gb ( sold as 900Mb )
BT can ‘see’ if your equipment is compatible if you upgrade , presumably you upgraded from BT FTTC , if the hub were incompatible a new one sent automatically, that’s not to say it can’t be faulty , but as stated are you sure your equipment is OK , if it’s not OK , it may have seemed fine on 80Mb , but is found wanting once you push 900Mb at it .
You can do a ‘proper’ speed test from your My BT account , but obviously you can also contact BT if your speed is below the minimum speed guarantee, you don’t need to wait 10 days ,

Re: Full fibre broadband speed

Gorsoft — Fri, 20 Feb 2026 11:24:14 GMT

Contacted BT. All their checks suggests the problem is at my end, so to eliminate the possibility of my 5 year old BT modem being the problem, the lovely lady from Belfast agreed to send a replacement upgraded model.

Thanks for all the help.

Re: Full fibre broadband speed

Ritu_D — Sat, 21 Feb 2026 10:24:28 GMT

Hi @Gorsoft

Thank you for coming back and letting us know the outcome.

Take care and have a great weekend.

Ritu

Re: Full fibre broadband speed

licquorice — Fri, 20 Feb 2026 11:34:25 GMT

@Gorsoftwrote:
Contacted BT. All their checks suggests the problem is at my end, so to eliminate the possibility of my 5 year old BT modem being the problem, the lovely lady from Belfast agreed to send a replacement upgraded model.

Thanks for all the help.

There is no 'upgraded model'.

Re: Full fibre broadband speed

gg30340 — Fri, 20 Feb 2026 12:26:19 GMT

@licquoricewrote:
@Gorsoftwrote:
Contacted BT. All their checks suggests the problem is at my end, so to eliminate the possibility of my 5 year old BT modem being the problem, the lovely lady from Belfast agreed to send a replacement upgraded model.

Thanks for all the help.
There is no 'upgraded model'.

He may be sent the latest EE Smarthub.

You will no doubt be asked to return your "old" BT Smarthub. Whwn you send it back make sure you keep a copy of your Proof of Posting and if possible take a photograph of it in case you somehow lose the paper copy.

Re: Full fibre broadband speed

licquorice — Fri, 20 Feb 2026 12:32:00 GMT

Possibly, either way the Smart Hub2 is perfectly capable unless faulty so no requirement for an 'upgraded' Hub.

Re: Full fibre broadband speed

gg30340 — Fri, 20 Feb 2026 12:54:19 GMT

I agree but I think the OP must have a Smarthub and not a Smarthub2 as he stated that his Smarthub did not have a dedicated WAN port and the engineer had to change the setting for port 4.

EDIT: I have just re read what the OP posted and I was mistaken. He did say that he had a Smarthub 2 and not a Smarthub as I have posted.

@chrisjp

I am aware about the Ethernet port needing changed to WAN if it is not already set as a WAN port but you may be correct about the SM2 not having a dedicated WAN port. I just assumed, possibly incorrectly that this was now the case because of what the engineer had said to the OP.

Re: Full fibre broadband speed

chrisjp — Fri, 20 Feb 2026 12:44:33 GMT

My SH2 also doesn't have a dedicated WAN port, but in the Hub Manager you can toggle the port between a WAN and a LAN port. That's what the engineer did when he "changed the setting".
I thought all SH2s were like this, but maybe later "upgraded" SH2s do have a dedicated WAN port.
I suspect, though, that the BT agent who claimed to be sending out an "upgraded SH2" was talking the usual nonsense that these woefully badly trained agents do!

Re: Full fibre broadband speed

licquorice — Fri, 20 Feb 2026 12:51:02 GMT

In message 5 he says he has SH2.

Re: Full fibre broadband speed

iniltous — Fri, 20 Feb 2026 13:05:15 GMT

As stated , if the existing hub were incompatible then a new one would be sent out as part of the upgrade to FTTP , regardless of it being ‘upgraded’ model or not , it’s a reasonable course of action to take as it’s an item to tick off the suspect list, hopefully this will fix the problem, indicating it was faulty rather than incompatible.

FWIW , my relatively new SH2 doesn’t have a WAN port as such , just a switchable one from LAN to WAN and although I don't have FTTP availability, should I get that upgrade path at some point , I won’t need a replacement router .

Re: Full fibre broadband speed

gg30340 — Fri, 20 Feb 2026 12:54:52 GMT

@licquoricewrote:
In message 5 he says he has SH2.

I was editing my post while you posted.