I had been using a Nomi-mobile SIM for a year or so with no problems. Nomi was recommended to me by a kiosk selling calling cards who said their rates were very good, which is true. Txt msgs 11p to Europe, calls 1p p/m to Europe, 5p to UK landlines and 10p to mobiles, etc. You also have the option of using a landline to make cheaper calls. I found them very helpful, very competitively priced and I loved the online account. Up until May 2009, the only problem I had was when I called a French landline from a UK landline and was charged 40p... read full review »