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/ndt/354907/حضور-اعضای-هی-ت-علمی-دانشگاه-در-نشست-بین-المللی-خا