I bought this just this month to use two sim cards in the same phone as I am staying out of town for a few months. The price and features seemed fine, but the reception is awful, and the voice clarity is so bad that I have already switched back to my old Nokia.
At first I thought it was a problem with my service provider and the new sim card, but as soon as I put the new sim in my old (ancient N-series!) Nokia phone, the reception improved dramatically and I could hear everything fine and people could hear me back. It’s quite silly of Samsung to add the frills without taking care of the basics of a good mobile phone: reception and voice clarity.