3 weeks ago I bought a new iphone4s but it happens to shut down randomly and I have to do a hard reboot to turn it on. My friend told me to check Diagnostic&Usage to check errors, I found a panic list there. The problem is my phone did fell on the floor 1 week ago, which cause me unable to replace he phone because they told me my phone got small scratches. Is it true that even with major hardware problem I can't get my phone replaced? If so, anything else I can do. Please help. Thank you.