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.
Siri 語音助理被成功移植到 iPhone 4!? https://qooah.com/2011/10/15/siri-ported-to-iphone-4/