iPhone 3GS 16GB Unlocked !

iPhone 3GS 16GB Unlocked to any network. This is a fully working phone but for some reason it loses signal in my house. I am listing this as a fault as I don’t want anyone to be disappointed, should they suffer a similar issue. The phone will come with a white Otter Box Impact case, the screen has been protected from day one and comes with original box and accessories.