Just tried the suggested idea and going into advanced settings on the router and looking at connected devices the phone was showing up on wireless as it does as when it is turned on it logs onto the HH3 on its own.
Turn off the phones wireless, refresh the web page of the router and disconnected, strangly enough!.
Then go on the phone and bring up the list of wilreless things and choose bt fon, let it connect. Refresh page on computer and phone not connected, like I guess as home network devices on your part of the HH.
Gets an ip address of not starting with 192.168 like the stuff in the house, computer, telly, blueray box and all that.
Phone has been dished up a 10.209.48 address.
Noticed on WIFI analiser, (app on the smart phone) the MAC address of the 3 things on the router, my wireless, BTfon and BT openzone are similar, just the first 2 numbers change of the group of 6 , 2 digit numbers but guess you have control of your 192.168. ***.*** part.
So I would say no you cant tell if somebody is on. Not sure if the wireless Blue LED on the things flashes when someone is on wireless on your home network as well as BT fon, but not a good way of deciding really,
BT fon must be like said a separate part we dont get to play with. Just works.
Speedtest app on the phone. gives 10 or 11mb speed on the HH network.
On BT fon does 3.2MB so it does not run at full speed when someone is on. Gives the home user most of the connection speed I guess.
OK mine goes at 37.5Mb normally full wack. Phone only ever does 11 max so BTfon is slower download. Up is the same at 1.8Mb.
Guess you never know but different mac address so not using your internet allowance or your connection , if they are doing anything dodgy that has someone knocking on the door!. I had thought about that in the early days but differnt MAC adress so not your own internet connection. good then and did not want people using some of my 40GB a month. Does not but cant tell if anyone is on it.
Mine is a flat enough away from the public paths, 2nd floor and in a cupboard of a brick house, not even good out in the garden so unlikely mine will ever be used unless new neighbours downstairs or to the side moving in and will move BT broadband so can use until theirs is going. Router in a rubbish place but shared so ok to me to use other peoples. A bit mean but playing along!.
To be fair I think it is rubbish. Trying to find a hot spot need to be stood still. ok in a town as BT openzone are many from the shops but really a bit useless and mobile phone being unlimited and on 3 that is good, find not many places it does not go.
Got BT for the bt fon but really wish I did not bother, still BT infinity was the cheapest at £18 last may so would have had anyway.