Am I a previous owner of an iPhone 5. During my time with this phone (while under the 1 year warranty), I experienced an issue where dust or something seemed to be getting stuck underneath the camera lens, resulting in dark spots on pictures. When this happened, I took it into the Apple Store and they issued a warranty replacement for the phone. Shortly after, the same issue actually happened again with the replacement phone, so I took it back and they issued a replacement a second time. I've recently upgraded to an iPhone 6s (big upgrade!). My question is, is there a limit to the number of times they will replace a phone under warranty? If I experience any issues with this phone, should I be hesitant about bringing it into the Apple Store because of a limit? Is there any kind of "lifetime replacement limit" that exists?