os120 indicates it requires iOS 12.0 or later.
.ipa (The standard package format for iPhone/iPad applications).
This specific file string looks like a technical identifier or a direct download link for a (the format used for iOS apps). os120 indicates it requires iOS 12
Based on the versioning and naming convention, here is a write-up explaining what this file is and the context behind it. App Name: WhatsApp Messenger
v2.2x (The internal build number 391449692 suggests a specific development or beta branch). os120 indicates it requires iOS 12
Sideloaded apps do not update automatically via the App Store, meaning you miss out on critical security patches.
Downloading and installing IPA files from unofficial sources is . os120 indicates it requires iOS 12
64-bit (Optimized for modern iPhone processors).