Pick up your iOS 7.1.2 device, open the , navigate to Purchased , and download the last compatible version using Method 1 . Method 3: Jailbreaking and External IPA Files (Advanced)
You use an older version of iTunes (v12.6.5 still supported app downloads) to request WhatsApp. You then use Charles Proxy to change the version ID code to the specific build numbers that matched iOS 7.1.2.
Search for inside the iTunes App Store and click Get/Download .
“Backup Detected. Would you like to restore your chat history?”
The general methods for attempting to download an old WhatsApp version on iOS 7.1.2 include: