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.saat24.news/news/550615/شرایط-حضور-در-آزمون-مرحله-دوم-المپیادهای-علمی