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.
iPhone 4使用iOS 5比iOS 4瀏覽速度快一倍以上!? https://qooah.com/2011/10/27/iphone4-ios5-vs-ios4-speed-test/