This is already available to download on Marketplace. Its the app 'SMS + Call filter' compatible among running Windows phone 8 OS. Free Download Call Blacklist Software For Nokia Asha 2000 However a newly update app similar to iBlacklist among Lumia is currently now circulating to popularity. There is no available Blacklist app for Lumia 800 Smartphone. Furthermore, Nokia Asha 305 is a Symbian Series 40 phone making it incompatible with 3rd party application. Unfortunately, the blacklist feature is not available for the Nokia Asha 305.
