W910i phone lock

I have w910i .i have set its phone lock.i dnt knw what realy is the phone code?is it when i take of the sim n then switch on the phne wil it ask then?i thought it wud b privacy to everythng bt nthng happens 2 my phne no lock code is asked neither any thng is private?what shal i do 2 make things private?

Do let me know when you find out.

brother Sony Ericsson w910i master code is "00000" or "0000"

I found my ans the phone lock appears when phne is switched on i got many softwares frm www.getjar.com bt no privaby 2 sms stil