WhatsApp Delta is a free app that allows you to customize the look and feel of WhatsApp to your liking. The app has a variety of features including auto-messaging, longer messages, and sending larger videos. It is easy to download and install. To update, simply uninstall your previous version of WhatsApp and restart your chat session.

In order to download WhatsApp Delta, you will need to have an Android device. To enable the option to install apps from unknown sources, go to the security settings on your phone. Then, select the unknown sources option. After that, install the app and activate it. If the installation process is unsuccessful, you can try to download the app again from another source.