To run a Messenger IPA on a non-jailbroken device, users must utilize signing services (like AltStore or Sideloadly). These tools trick the iPhone into believing the app is legitimate by signing the IPA with the user's own Apple ID. However, this is temporary; free Apple developer accounts expire every seven days, requiring the user to re-sign and reinstall the file, creating a high-maintenance environment for those avoiding the official App Store.
: Downloading IPA files from unofficial third-party sites is risky. Modified IPAs can contain spyware designed to steal your Facebook login credentials. messenger ipa file