As a little bit of background, I was having a slight issue with the home button on my iPhone 4. Some days it was slow to respond to the home button, some days it wouldn't work at all, and other days it worked fine, and as it was only about half way through my original 12 month warranty period, I was prepared to live with it for a bit longer, as not to be stranded without my phone for too long. Skip forward to today, I came to be in the Apple store this morning for a Genius bar reservation on another issue with the smart cover marking up the aluminium case of my iPad, and I just thought I'd ask about how long I could expect to be without my phone during the repair period on the button. The guy grabbed my phone and had a quick look, but failed to find a problem at all, but promptly reached into the draw behind him and pulled out a shiny new iPhone 4 and asked if I'd like a replacement!! I was almost floored... He switched out the Micro SIM and I was on my way in under 5 minutes. Well done Apple, in particular the Castle Hill NSW store (Sydney Australia) for your prompt service and value of customer satisfaction. It that kind of service that will keep me an Apple customer, probably for life!!