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.
https://civil.farafile.ir/file/39590/جزوه-ﺗﺌوری-الاستیسیته--استاد-شافعی-(دانشگاه-صنعتی-ارومیه)