Before you install WhatsApp Phone Capture on your Android device, ensure that your phone settings allow installation from unknown sources.
Open device settings.
Select Security and privacy.
Select Install unknown apps.
Note
Some devices have a single setting control for all installing applications.
Some devices have a dedicated setting for each application used to install WhatsApp Phone Capture. The installing application can be your web browser or your file manager application. For a dedicated setting, enable installation from unknown sources based on your installation method. Smarsh recommends that you either use a web browser or a file manager app to install WhatsApp Phone Capture.
Web browser: For example, if you are using Google Chrome, ensure that Chrome security settings allow installation from an unknown source.
File manager: Enable your file manager application to install from unknown sources.
If you do not enable this setting before installing WhatsApp Phone Capture, a warning message is displayed during installation. Tap SETTINGS and enable the setting.
During the installation process, if the Blocked by Play Protect pop-up appears, tap INSTALL ANYWAY.
