Are you trying to from that iPhone 4, or were you hoping to use it as a primary phone ?
:
If you have previously downloaded WhatsApp on your Apple ID using a newer device, you can sometimes trigger a "Last Compatible Version" download on your iPhone 4. on your iOS 7.1.2 device. Search for WhatsApp and tap the Cloud icon If prompted, select to get the last version that was compatible with iOS 7. Limitation download whatsapp ipa ios 7.1.2
Are you trying to from that iPhone 4, or were you hoping to use it as a primary phone ?
:
If you have previously downloaded WhatsApp on your Apple ID using a newer device, you can sometimes trigger a "Last Compatible Version" download on your iPhone 4. on your iOS 7.1.2 device. Search for WhatsApp and tap the Cloud icon If prompted, select to get the last version that was compatible with iOS 7. Limitation