Find Your friends Hide email in facebook?

Some Peoples hide their mail id in
facebook?
but try this trick to find his/her
mail id,

firstly you want vodafone sim.
then dial *505#

then subscribe the facebook in
ussd. then you will get menu like "fb"
then
select "FRIENDS" and
press "1" for "FIND
FRIENDS"
then enter ur friend name in
"search friends"

then it will ask
1.post
2.message
3.profile

select the "3" and it will shown the
mail id.
If it's not showing mail id?
showing numeric id?
That user using mobile Number
Not adding their mail address!

Today I found this trick,
it's 1000% Working
Enjoy friends...