if you know the original. If the file size is much larger/smaller than the official (around 300-400 MB for Messenger), do not install.
The legality of using modded IPAs is murky. While it is not generally illegal to install an IPA file on your own device, the distribution of modified, copyrighted software (like Facebook Messenger) is illegal in many jurisdictions. Furthermore, using tools to bypass software restrictions violates the Digital Millennium Copyright Act (DMCA) in the United States. messenger ipa
