sir,
i have for sale an idea of a new feature for mobile phones. in this
context, i have to contact, through e-mail only, the appropriate
person in nokia,ericsson,samsung,sony,panasonic,siemens. he may be the
chairman or patent administrator or in-charge of external
relations/law department in the firm. please tell me the e-mail
addresses of the appropriate person in above mobile phone companies.

Watch how you proceed.  If you have an idea that
you have not filed, they aren't going to want to
talk to you, and if you have a Patent Counsel,
better to let them do it.  I am going to pass this
question to someone who I know works with
one of the people above, see if he has any advice.