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://iranppt21.farafile.ir/file/47686/طرح-درس-ملی-شناخت-کسر-ها-پایه-چهارم