First time Android user...couple of quick questions 1. Why does the green led light sometimes flash on the phone..I think its some kind of notification but when I check my mail n messages, I don't have any new ones. 2. Why does my alarm clock never go off on the morning? It is def set correctly 3. Sometimes when browsing, the screen will get brighter and dimmer automatically. Is this a feature ofthe phone to save battery or is something wrong? Thanks in advance for any replies.