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://danesh-pajohesh.farafile.ir/file/37591/جزوه-آمادگی-دفاعی-مقطع-دهم-نظری-و-دوازدهم-فنی-حرفه-ای