I have an LG Tribute HD which I have used through Boost for about a year now. I have bought an unlocked, refurbished iPhone 6s from the Apple Store, hoping that I could switch out my Tribute for my iPhone. I hope to keep the same number. However, every time I go about the process of swapping out the phones, I put in the serial number for my iPhone, I am told that there is a problem with it. I know it is the correct serial number; please help!