Conclusion WhatsApp may work on Android 6.0.1 now if WhatsApp still supports that version, but support can be dropped at any time. Relying on an OS that old risks losing updates, features, and security protections; upgrading the OS or device is the best long-term choice.
will become the new absolute minimum requirement to run the app. WhatsApp Help Center Why Support is Ending will whatsapp work on android 6.0.1