Report "I have a Samsung SGH F480 which was on contract with Orange. the contract has just finished and we have signed up with T-mobile who provided a new SIM card. I have inserted the SIM but the phone now says "Incorreect SIM" and lower down has a space to enter something below "Network Lock". Does this mean I should go along to get the thing unlocked ? I did a search on here but didn't see anything saying "Network Lock" Thanks"