The fact that I bought this from a non-samsung/non-verizon seller/merchant makes this device all the more remarkable. I have no problems with it; I had no issues setting it up and getting my contacts, files, games, texts, data, etc. xferred over from my other phone; and it gave me no issues with utilizing my sim card. I was even given a new free sim card from VERIZON.Needless to say, this device was 100% satisfactory for me considering everything that went into my decision to buy it.