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://alifile.farafile.ir/file/19834/تحقیق-شبیه-سازی-سیستم-آموزشگاه-کانون-قلم-چی-با-دلفی-و-access