Over the next few days, Facebook will stop allowing messaging in its main iPhone and Android apps, and force all their users around the world to download its standalone Messenger app, according to TechCrunch.

Facebook first started requiring users in Europe to use Messenger back in April, but after seeing “positive results” in terms of engagement, its rolling out the plan to the everyone. Facebook tells me people on Messenger reply about 20% faster, and not supporting multiple version of mobile chat will help it make both its main apps and Messenger better.

Mobile web, iPad, feature phone, Windows Phone, Paper, and desktop users can still message in their main Facebook apps or sites like before, and will be spared from this forced migration for now.

Previously, people could chat from a Messages tab in Facebook’s smartphone apps. They also had the option to download Messenger, which would turn the Messages tab into a notifications hub and shortcut that would fast-switch users into Messenger when tapped.

Soon, though, iPhone and Android users will be forced into this bouncing around. They’ll get a few optional notices to download Messenger before chat eventually stops working in the main apps. Facebook will also send an email to people the change will impact that explains why it’s happening, TechCrunch says.

Facebook insists that people send more photos, group messages, videos, stickers, and audio clips while using Messenger. That’s supposedly means they’re having a better experience. With 200 million users on Messenger sending 12 billion messages a day, Facebook wants to unify its efforts around the app and skip out on maintaining code for a parallel version inside its main apps.