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 4s體質確定!? 雙核800Mhz, 512MB RAM https://qooah.com/2011/10/11/iphone-4s-cpu-800mhz-512mb-ram/