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的使用率接近90%,滿意率只有55%? https://qooah.com/2012/03/27/siri-used-by-87percent-of-iphone-4s-owners/