End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
http://gsia.tums.ac.ir/fa/IT/ndt/356417/بخشنامه-مدیریت-آمار-و-فناوری-اطلاعات-در-خصوص-حملات