Spoofing intercepts and alters that handshake.
Occasionally, an app update radically changes the user interface. Instagram changes the layout of navigation buttons; Spotify alters the library view. Many users prefer the "classic" look. However, servers often detect old app builds and force an upgrade. By running an old app but spoofing a new version number in the HTTP headers, users can sometimes trick the server into thinking they are compliant, all while enjoying the old interface. spoof app version
Instead of spoofing a proprietary app, seek open-source alternatives. For example, rather than spoofing the version of Twitter, use "Fritter" or "Nitter" (privacy-focused wrappers). Spoofing intercepts and alters that handshake
Note: Many iOS apps now use certificate pinning, making MITM spoofing extremely difficult without a jailbreak. Many users prefer the "classic" look
Combine local version checks with remote checks. Use Google Play Core Library's In-app Updates API which not only checks version but also verifies the app's signature.
In the intricate ecosystem of modern software, the version number is more than just a string of digits separated by dots. It is a passport, a gatekeeper, and sometimes, a barrier. It dictates whether your device gets the latest features, whether you can access a specific server, or whether your older hardware is left in the digital dust.