Establish a virtual environment for using programs.
It is impossible to install the same program more than once without first erasing the prior installation since Android recognizes duplicate applications. This effectively means that, among other things, you cannot have two user accounts on apps that don't accept multiple accounts, like Facebook or WhatsApp. But we can use a parallel space app like VPhoneGaga to get around this.
An application-duplicating virtual machine
It functions as a waterproof environment separate from the main operating system, allowing you to install programs that you already have installed on your device. This application functions as a virtual computer. This saves us from having to input our login information each time we wish to switch accounts, enabling us to install apps like Facebook and WhatsApp and utilize multiple accounts at once.
However, a virtual machine's utility goes beyond only enabling you to run duplicate apps; it may also be used as a secret area with hidden files, a different workspace, or a testing ground for apps that could endanger the device. And as we say, none of this had any effect on our Android's operating system.
