often refers to a version where certain UI elements are suppressed or it's designed to run in a "headless" or background state.
: This is often a tag used by decryption tools (like Clutch or frida-ios-dump) or specific repositories to indicate the "optimization" level or the specific toolchain version used to crack the DRM. user-hidden-bfi2 : This is a specialized tag. often refers to a version where certain UI
: This refers to the specific internal version of WhatsApp (Version 2.2x). The long numerical string is the build version used by Meta to track specific code pushes. often refers to a version where certain UI