I just had a credit check for my new car purchase and it was lower than last time I saw my score, when I bought my home. I've added several other credit accounts since but always make payments on time, as well as with my mortgage. No idea how it could have went down, but it didn't go down a crazy amount. It is still the in the excellent range and I got the lowest APR on the car loan, which is all I cared about. I was wondering if I would get another credit check by getting a new iPhone, but as I am reading here, I won't if I go through my carrier, which is good to know. I don't know if I am going to get one though. As long as my 5s continues to hold up, I think I am good and will just upgrade next year.