With tens of millions of users, WhatsApp is the marquee app on KaiOS — and it is steadily getting new features.

We haven’t really talked about KaiOS a lot here, but the operating system is now installed on over 100 million phones, making it the third-largest mobile operating system in the world. KaiOS is a fork of Firefox OS that’s designed for feature phones, and over the last three years it has seen a meteoric rise because  [Read More…]