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://porseshnameketabhesabdari.pdf-doc.ir/file/25873/دانلود-پی-دی-اف-تحقیقی-انتخاب-موضوع-پژوهش