Downloading version 339.0.0.18.118 from unofficial sources poses several dangers:
: Meta (Facebook) has automated systems to detect modified clients. Using a MOD can lead to your account being temporarily or permanently disabled for violating their Terms of Service . Downloading version 339
An APK (Android Package) is the file format used to install apps on Android. A "MOD" is a version that has been altered by a third party. For Messenger, these modifications often claim to: : Disabling sponsored content in the inbox. Downloading version 339