I accidentally locked my SIM card by trying to set a SIM PIN on my iPhone. So, visible sent me a new SIM card. I put the new SIM card in, and it doesn't work. I don't have service, and my phone occasionally gives me this message: "iPhone is not activated. Contact your carrier if this problem continues to occur." I contacted visible, and they haven't done anything about it for 3 days. Anyone else have this problem or have a solution to it? Thanks.