How do I get to unlock a privacy protection password from my hisense u989

[claudinepaulse87]

My sister did put in a simcard to use my hisense u989 cell phone when I want to use my phone it shows enter your privacy protection password to unlock but I never had it

 

[bignastyid]

http://www.tomsguide.com/forum/id-2317968/read-passwords-lock-codes-pin-numbers.html