If you are trying to use WhatsApp on an older device like an iPhone 5 or 5c (which are capped at iOS 10.3.4), here are your current options: 1. Use WhatsApp Web (Partial Workaround) While you cannot install the app, you may be able to use WhatsApp Web through a mobile browser like Safari or Chrome. Limitation
To update WhatsApp on your iOS device:
Some third-party "Legacy iOS" projects exist in the developer community to bridge WhatsApp Web into a native-feeling app for older versions, but these are unofficial and may have security risks.
Android running OS 5.0 and newer* iPhone running iOS 15.1 and newer. WhatsApp Help Center