Wife's iPhone 4 has a sleep button issue. AppleCare? or do I need to look at replacement. We dont currently have AppleCare, and we are nearing the 1 year mark (in July) where we could no longer buy it. I did have a concern that there was liquid in the device, but everything else works fine. Help! I've been told I need to HAVE applecare when I walk in, not buy it on the spot, I dont want to end up buying apple care and then turn around and drop $200 on a replacment device.