Broadband help

For queries about your TalkTalk broadband service.

Showing results for 
Show  only  | Search instead for 
Did you mean: 

Some devices can't connect to the Wifi

First Timer
Message 2 of 2


I have got a Wifi/router device (SG4K100130) that is malfunctioning for last few days and we have got trouble connecting the mobile phones, making whatsapp calls however, notebooks are ok to connect. Also, my ring bell which was working fine and now it is not able to connect to wifi. Nothing in terms of device location/line has changed!

Please help me troubleshoot this issue


Community Star
Message 1 of 2

This is probably down to WiFi interference, rather than a router fault. The level of interference can change at any time.


Slow speed, intermittent dropouts, breaks in the signal, or no signal on some or all devices, might be caused by Wi-Fi interference from other local networks, which can also lead to a permanent reduction in speed. No ISP can be responsible for your local environment, this is mainly a by-product of the popularity of Wi-Fi.


Do you have any wired connections & if so, how do they perform?

Generally speaking, the 2.4GHz band suffers much more from interference than the 5GHz band, but the 2.4GHz one can sometimes have a better range, but this all depends on your local area.

Have you had TalkTalk’s Wi-Fi optimisation disabled on your Sagemcom FAST5364 router? When this is enabled, as it is by default, it has the power to override any Wi-Fi configuration changes that I might suggest that you need to make. This will not help rectify this type of problem if Wi-Fi Optimisation is allowed to change my suggested settings. Only TalkTalk can do this for you, you cannot do it yourself. If not, just request they disable this for you in your reply.

The next stage involves sending out a guide to you to help you get me some important diagnostic results, so as I can analyse them for you and recommend changes to your router configuration to solve them.

I only send this out to people who request it.

I am not employed by TalkTalk, I'm just a customer. If my post has fixed the issue, please set Accept as Solution from the 3 dot menu.
TalkTalk support and Community Stars - Who are they?