The social networking giant has confirmed to Engadget that SMS integration and multiple account support is being trialled on its Android app.
SMS integration, a feature that was removed from the service several years ago, allows people to read texts alongside their Facebook messages.
"We're testing the ability for people to easily bring all their conversations - from SMS and Messenger - to one place. It's a really simple way to get, see and respond to all your SMS messages in just one app," said Facebook.
"By choosing to access your SMS messages in Messenger, they're right alongside all the other enhanced features that Messenger offers."
Multiple account support, a feature that was recently introduced to Facebook-owned Instagram, will benefit users who have both personal and business profiles or use the app on a shared device.
"Until now, there hasn't been an easy way for people to access their individual Messenger accounts from shared devices. To address this, we've launched a feature on Android to enable multiple people to log in and use Messenger from a single phone," Facebook added.
It is yet to be confirmed when the new features will be rolled out to everyone and reach other platforms.