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.
iOS 7 小改善13:獨立開關Apps在背景執行,以節省用電! https://qooah.com/2013/06/18/ios-7-background-app-lock/