So last September I went into my local Apple Store to buy an AppleCare warranty on my new iPhone 6s from T-Mobile. This was my first time ever buying a warranty from Apple and so I assumed everything went according to plan. Yesterday I decided (out of boredom) to check online to see what the expiration date was on it etc. I checked the serial number for my phone, and it showed there was an AppleCare warranty... BUT when I checked under my Apple ID, it said I had no registered AppleCare plans. I have read online that you are supposed to register these warranties with some kind of registration number that they give you in the store. All I got at the time was a receipt which I cannot locate now (and I always keep everything so this is really bothering me). I don't know what to do. I am planning on going into the Apple Store this weekend, but I just wanted to check on here and see if this is a common issue and if Apple has neglected to give any of you the registration info as well.