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://sciences.farafile.ir/file/38063/پاور-پوینت-فصل-دوم-کتاب-نظریه-های-دولت-وینسنت-دولت-مشروطه