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://slidesaaz.farafile.ir/file/46272/جزوه-مقاومت-مصالح-1-–-استاد-حیدر-پور-دانشگاه-خلیج-فارس