ISY Block is simple. Laconic design, intuitive menu, the most simplified procedure of locking / unlocking ISY Block is lite. Only 5 MB for downloading, low memory and battery consumption ISY Block is convenient. You can block calls from a certain number but allow to receive SMS from it (and vice versa) ISY Block is flexible. Blocks hidden, unknown, international, short numbers not only permanently, but on a schedule as well (for example, while you are in roaming) ISY Block keeps your secrets. IS
