I just got my iPhone on Thursday. I like to turn off my fell phones at night at charge them. I turn off my iphone and plug it in using the OEM charing cord. Then after about 5 seconds it turns itself back on. Then I have tried to plug in the iphone THEN turning it off...NOTHING happens. Is it charging? I would assume it would have something on the screen telling me that it's charging. Do I have an issue I need to deal with, or am I doing something wrong?