I purchased an iPhone 6 full retail price from Radioshack on launch day. I requested to have it unlocked through AT&T's website and received the approval email the following day. I followed the steps to have it unlocked, but for some reason it just doesn't unlock. I've tried twice and nothing. The email states that after restoring it will be unlocked and a message saying "Congratulations your iPhone is unlocked" would appear on iTunes, but the only thing that comes up is to set my iPhone as new or to restore from backup *which i did* Any ideas as to why I'm having such difficulty unlocking my device?