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.
[影片] iOS 6.1.4 vs. iOS 7 Beta 1 速度大決鬥! https://qooah.com/2013/06/14/speed-test-ios-6-vs-ios-7/