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There is an icon showing up on the top of my screen that I cannot figure out for the life of me what it is for. I looked through the manual at all the icons and it is not there. I looked through all the icons on the phone too, nothing. It is showing up where the icon for voice mail, text messages, etc.. show up. It is an envelope with an upper case A in the top right corner. What is it?! How do I get rid of it?! PLEASE help. It's driving me mad!