So I recieved my iPhone 5 at the end of September last month/early October. Recently, a few months ago my friend was playing with my phone. She tried locking my phone when she was done, and she said "it didn't work". And I asked her what was she talking about, and she said the lock button on the top right corner does not lock. I've had this phone for MONTHS and I NEVER knew there was a lock button there! I have assitive touch on, so I always use that to turn it off (I went from Blackberry to my first iPhone, and my friend was setting it all up for me and told me if I ever want to lock my phone to use the asst. touch). Anyway, my friend told me I should get it replaced because I have one year to do so. Even though I found out I had lock button -- a broken lock button, I didn't care. I never lock my phone using the button anyways, and I never turn off my phone. (And to answer people's question to why I've never seen the button - when I got my phone, I bought a case, sticker, etc everything for it, and my friend applied everything on it, including setting my iPhone, and my case actually blocked the button so I never saw it). Anyways, today I upgraded to the iOS 7. It was being really glitchy, and I had to turn it off (I've had this phone for almost one year, and I actually had to google today how to turn off my iPhone because I never had it turned off before. If I ever needed to "reset" my phone I just turn Airplane mode on and off). So I found out I could hold the "lock" button on my asstive touch, and I can turn it off that way. And it worked! But then I realized... How the hell am I gonna turn it back on. It took me one hour (not exagerating), pressing down the button on the top corner immensely, and it finally turned on. I never realized how important that button was, so I'm really considering going to the Apple store to get it fixed/replaced. But since I'm getting it replaced... Do you think they would let me "upgrade" (fee or no fee) to the 5S? Regardless, I want it replaced, 5S or not Any advice would be helpful, thank you!