Lately I have been getting a very faint ringtone when I receive a call and in the left corner of my screen it says quiet before I answer. I have the ringtone set to high and when I test it, it is loud, and I am not in Manner Mode. I also do not have the speaker phone on. I can't seem to get the quiet to go away, and haven't found any instruction in the manual for this action. Any help would be appreciated.