
How to allow installation from unknown sources
Most likely, the system will prompt you to do this when opening the file, but you can find the necessary option yourself.
On smartphones from different manufacturers, the path to the desired option may differ. For example, on Realme smartphones, you need to go to settings, then find “Security” and “Installation from unknown source”. Then you need to select the application from which the file will be installed. This can be a browser, file manager, cloud storage, alternative store, and other similar sources.
Samsung smartphones have a slightly different procedure. You need to go to settings and open “Biometrics and security”, then “Install unknown apps”. Select the desired source and allow installation.