A: No. WhatsApp Pay requires Android 5.0+ and a newer security library.

Open WhatsApp and try to verify your phone number. Limitations of Old WhatsApp on Old Android

Even if you find an old APK, you will likely encounter a "This version is out of date" error or be unable to verify your phone number via SMS. 📥 Finding the "Last Working" APK

Some open-source developers have created modified clients or bridges that aim to connect older devices to WhatsApp's services. A notable example is , a self-hosted bridge that acts as an intermediary between your old phone and WhatsApp's servers.

If using a legacy device for experimental or nostalgic purposes, avoid linking primary email accounts, banking apps, or highly sensitive personal information to the device ecosystem.