How do I stop my router being a wi-fi hotspot?

[paul_d_woods]

I have an unknown device connecting to my Wi-fi.

Switching Wi-fi off, for several minutes, then restarting doesn't remove it.

It's not my mobile.  What is it?

BT Smart Hub Manager will not allow me to remove it - Red Circle with Diagonal when I hover the cursor over the Remove 'button'.

Any help welcome.

Thanks

[gg30340]

Do you any Sky devices as the MAC would appear to be for one.

[iniltous]

Try looking up the vendor of the MAC address 

http://www.coffer.com/mac_find/

[rbz5416]

It could  well be your mobile or another device set to use MAC randomisation, which most are by default. That means each time the device connects, it uses a phantom MAC address rather than the real one. Then next time it connects it uses a different one & the last one becomes orphaned as an unknown device. Only a factory reset will clear them together with turning off the feature on each device for your home network.

[paul_d_woods]

Def not mobile (not smart). Powered both phone and router off, then restarted router, leaving phone off. Still on wi-fi.
Thanks for suggestion.

[paul_d_woods]

Tried link - Said couldn't find D4DACDDC1282 or D4DACD

Thanks for suggestion.

[paul_d_woods]

Switched off SKYQ, and Humax, boxes at mains. Then switched off router wi-fi. Restarted router. Device still there, but Humax (game console) had gone.

Thanks for the suggestion

[licquorice]

As @gg30340 said earlier, it's a Sky device.

Whatever device it is, it has your WiFi password.

Change your WiFi password and see what doesn't connect.

Deleting a device from the network map doesn't do anything except remove a non-connected entry from the list.

[paul_d_woods]

Thank you will try that.