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---- Etiquette: Phone Conversations and Texts While Interacting With Others
tbear - 1:57 pm on Jul 8, 2013 (gmt 0)Thread source:: http://www.webmasterworld.com/foo/4590457.htm
I'd say talking louder is usually a direct result of not hearing what's being said to you.
Daft really, since your speaking louder doesn't help you hear your mobile any better....8)
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