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.
老機翻生,iOS 7.1 令 iPhone 4 變得更暢順! https://qooah.com/2014/03/11/ios-7-1-speed-up-the-iphone-4/