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.
可享 iOS 9 升級的產品列表 - 你有份嗎? https://qooah.com/2015/05/23/device-to-upgrde-ios-9/