The same happened to my friend, she bought an iphone 5s with GPP sim last Thursday January 17. She was instructed not to reset the phone, not to do anything on the settings, and NOT TO REMOVE THE SIM card, yet she did remove it and now the phone is LOCKED. Now she is pestering me on how to fix it. I Reminded her several times not to do anything to it because it is locked to VERIZON, but girls will be girls. She even said it was an accident. How the hell would it be an accident you need a sim ejector pin to remove the sim! What a waste of money.