Hi I am on the 3 network with a monthly contract. My husband bought me the Samsung G600 SIM free phone for Xmas but it won't accept my 3 SIM - it accepts others like TESCO, Virgin etc. I have contacted 3 and they tell me that their SIMs don't work in Samsungs. Can anyone offer any advice on how to get my SIM to work in my new phone or do I have to sell it? Thank you.