Drag and drop the downloaded WhatsApp IPA file into the Sideloadly interface.
Download the IPA file directly onto your iOS device using the Safari browser. Open (available via Cydia).
The most legitimate way to attempt installing WhatsApp on iOS 7.1.2 is through the App Store's "last compatible version" feature. Apple has built-in functionality that, when a user attempts to download an app that requires a newer version of iOS, offers to download the last compatible version available for that device. whatsapp ipa for ios 7.1.2
Use the Safari browser to access lightweight web-based chat services.
Enter your Apple ID credentials if prompted (this is required to sign the app dynamically for your device). Drag and drop the downloaded WhatsApp IPA file
Change the value of both keys from the old version number (e.g., 2.18.71) to a currently supported version of WhatsApp (e.g., 23.x.x or newer). Note: You may need to check the current App Store version on a modern phone to get the exact active version string. Save the changes and exit the file manager. Step 5: Number Verification
Lightweight versions of communication tools optimized by the retro-tech community. The most legitimate way to attempt installing WhatsApp
Navigate to the root directory and go to: /var/mobile/Containers/Bundle/Application/ (or look under User Applications depending on your file manager setup). Locate the folder and open WhatsApp.app .