DD bought a new phone from a seller on ebay who we bought our navman from so we trusted them. The phone is great and not locked to a network BUT we forgot to check that it would work on 3G network who she has her sim with so its useless to us!! (2 blondes should never do this without checking thoroughly LOL) Regardless of our stuff up I would definitely say ebay! BTW if you want a cheap samsung slide phone in pink PM me!!!