After jailbreaking, you need a version of WhatsApp. Look for "Watusi" (a popular tweak) or a pre-patched WhatsApp IPA designed for iOS 9. This bypasses the "Update Required" screen.
Users searching for "portable WhatsApp" usually want: whatsapp for ipad 2 ios 935 portable
Getting WhatsApp on Go to product viewer dialog for this item. (iOS 9.3.5) in 2026 Go to product viewer dialog for this item. After jailbreaking, you need a version of WhatsApp