Bought the note 7 on a new 2 year contract. Have done nothing regarding trading it in, exchanging, or returning. Hoping to hold out as long as possible as I'm not really interested in any other phone currently on the market. Randomly got an email saying my refund has been processed and have now received a check. Could their be any harm in cashing this considering I am still using this phone and have no plans to get rid of it? Not sure if I am extremely lucky or if their is some hidden catch. Thanks