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://www.shafadarman.com/blog/روانشناسي-تربيتي-و-نقش-آن-در-پيشرفت-تحص/8-11/