If you are Tired of unwanted calls and messages, You Want to block unwanted calls & SMS blocker with unwanted call & SMS blocker. in this article we are going to tell you how to block unwanted incoming call SMS on your jazz sim. Jazz is Pakistan’s most famous and the number 1 telecom network. It is a long – term telecom network in Pakistan, providing many facilities and best packages to its preferred customer, including SMS packages, call minutes and Internet MB and many other packages.