I currently own an iPhone 4, bought last November. My first iPhone had a flash issue and now the one I currently have will not focus properly(tried all the tricks). My first apple genius experience was pretty worry free, questions were asked but I did receive a replacement phone. Is there a way I could upgrade to the iPhone 5/4S if I wait to replace my phone until it comes out? Or do I have to wait until my contract expires? Also, I have screen protectors on the front and back of my phone, so if they replace it would they be able to supply me protectors? Thanks.