I'm not sure if this has been asked before, if it has, I'm sorry. I searched and didn't find anything that answered my question. I have a regional carrier (US Cellular) and was wondering how Apple handles customer service with replacements and all. Say I had a home button malfunction on my 5s and go to my local apple store to get a replacement under warranty. How do they replace the device? I haven't heard of them carrying regional carrier phones in stores so I'm just wondering how they would handle it? Thanks all.