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.
ស្វែងយល់ពីម៉ូដែលនៃការអភិវឌ្ឈកម្មវិធី Waterfall https://www.techfree.info/2016/10/08/sdlc-model/