I'm not sure if this should be here or elsewhere! My husband and I both have Nexus 4 phones. If we try to use them in the house, via our BT wifi we keep being told that we are not connected to the internet and wifi is turned off. I check 'settings' and am connected to my home router and wifi is on. This happens when we're within a few feet of our router and modem. If I switch off wifi and use O2 (my provider) everything is fine. Of course, the more I use O2 the more money it costs. My husband is with Orange and has the exact same experience. Why on earth is it so difficult to use my home wifi?? It's driving us mad. Thanks for any help...