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Question: special characters

I want to add parenthesis with the word cell (cell) next to names so that I know the number shown is a mobile #. I can't find any parenthesis characters. I am also unable to get the special characters out of my "0". I've had my phone for seven months and I am very careful with it.
I wish I could save phone #s in groups, ie, Family, Friends, Doctors, Schools, etc.
thanks, LHoward