I recently discovered 3 are port blocking. I could not connect to my Hava or Orb over there connection. After a little searching on the net I discovered this is a common problem. Thankfully there is a solution, if you change the APN from three.co.uk to 3internet you can access both and there should be no ports blocked. I tried this with my PAYG sim which I had a £10 Broadband add on package and could not get it to work with the new APN. From what I have read it wil work with the sim that comes with the USB dongle for PAYG. I have now gone for a contract £10 a month and had no problem changing the APN.