Hi.  I am new to this so please bear with me.  About 8 months ago I brought a Galaxy s2 in CHCH . It was configured for Vodafone but I wanted to use it on the XT network.  I have read that the phone could be used on a number of networks without problems so I brought it.  I used the phone for about 6 months on XT and all was fine.  I noticed there was a firmware update and down loaded it.  From just after Xmas I have been having major problems with the XT network . I was getting repeated missed calls, no reception, unable to receive calls and garbled messages.  I ma also getting the message the phone can only be used for emergency calls...I subsequently did a system reset to get the phone back to a factory state but it still hasn't fixed the problem.  I rang Samsung and they say Telecom are mucking around with their towers down here and there is nothing wrong with the phone.  I tried my wife's Vodafone Sim in the phone and had the same problem.  I when into a local Telecom store and they gave me a new Sim card but again it didn't make the phone work.  Samsung are now saying that because the phone is a meant to be used on the Vodafone network its not their problem. Has anyone else had these problems and how did you get around these issues??