Problem with Sharp GX25

Sister got this phone about a week ago and when she first got it she was able to answer calls by just opening the clam shell. Now though she can't answer unless she presses the answer key. Anyone know how to change the setting so that it will answer when she opens the clam shell.

Thanks in advance.

Hi,Off the top of my head i can't remember,If you havn't an instruction manuel try searching for one,cos that may help you out.You may find one on ebay.