What to do if the DSL/Broadband light on your O2 wireless box isn't lit

If the Broadband or DSL light on your O2 wireless box isn't on or is red, it usually means it's having problems finding a broadband signal on your landline.

If you have signed up for O2 Home Broadband recently then it's likely your landline is still to be activated. We'll send you a text message and email once the line is activated – it can take up to two weeks.

If you've previously connected to O2 Home Broadband without a problem, wait a few minutes then try connecting again. If it's still not working, try the following steps:

Make sure everything is switched on correctly

Are all the power sockets properly connected and plugged in?

Check your landline

Pick up a telephone connected to your landline and listen for a dial tone. If there isn't one, BT can look into this – so give them a call.

Restart everything

Shut your computer down. Unplug the O2 wireless box and disconnect it from the phone line (make sure you note where everything goes). Leave it switched off for at least one minute. Then reconnect everything and switch it all back on. If it was just a glitch, this will probably fix it.

Check your connections

Make sure your O2 wireless box is connected to the landline through a broadband filter. These are the little white boxes with a short length of wire coming out from one end. We sent you two of them when you joined us.

Also check everything else plugged into your phone line is connected through a filter too. That includes telephones, fax machines, Sky boxes, burglar alarms and other devices in your house.

Don't use long cables

Make sure you use only the supplied grey DSL cable to connect your O2 wireless box to the phone line. Don't use your own extension leads, and if you're using a splitter to turn one phone socket into two, remove it.

Unplug everything else

If you have other things plugged into your landline, disconnect them one at a time. If removing something in particular fixes the problem then it was probably interfering with the O2 wireless box.

Plug the O2 wireless box into your main BT landline socket

The O2 wireless box works best if it's connected to the main BT socket in your home. This is usually the socket nearest where your telephone line comes through the wall into your house.

If you've tried everything above and are still encountering problems, then give us a call on 0800 230 0202 free from a landline, or drop the first '0' to call free from an O2 mobile.

View our interactive guide to get more support setting up and going wireless