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.
iOS6.1.2推出不足一星期已成為最多人使用的版本 https://qooah.com/2013/02/27/ios6-1-2-the-most-popular-version-of-ios/