I tried several SIP providers with my N95, finally deciding that VoipFone was my favourite. Apart from anything else you can have an 05... number, which is pretty cool. Anyway, I was gutted to find that this didn't work when I got my N900: the closest I got was the dreaded one-way calling. I now find, however, that they've reconfigured something and it seems to work. The trick is to use the new sip.voipfone.net domain rather than the old .co.uk one. Enjoy.
Last edited by NeilHoskins; 2011-03-15 at 10:23.