: You can use older versions of iTunes (like version 11 or 12.6.5) or third-party tools like iFunBox to drag and drop the IPA onto your device.
You can still send and receive basic text messages via the mobile web interface without needing a separate Messenger app. Troubleshooting Potential Issues Operating systems that support the Messenger app - Facebook facebook messenger ipa for ios 4.2.1 download
Note: Installing these typically requires a jailbroken device and tools like AppSync. : You can use older versions of iTunes
: Use a newer iOS device or a computer running an older version of iTunes (like 12.6.x) to "buy" the current Messenger app using your Apple ID. facebook messenger ipa for ios 4.2.1 download