I got my white 16 gig iPhone replacement over the weekend and I finally fired it up on Tuesday night. Here we are 3 nights later, and i can say, flawless performance in my home. I Have not seen a loss of the 3G signal yet, and all my calls seem to be going through now. I am so happy, I hope it sticks, and doesn't break again! Did your replacement phone fix your 3G issues? Please tell us all!