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://gsia.tums.ac.ir/intlcollege-fa/ndt/355334/برگزاری-کارگاه-آموزشی-متاآنالیز-مقدماتی