Just click on the red button above, wait for the download to finish and do not close the download message in the Notification Panel.
If the download does not start, hold down the button and then click “Open in incognito mode” to start downloading.
Go to Settings on your device.
You can find this section by searching “Settings” in the search bar on the main screen of your device.
Next, open the “Security” item. Please note that this icon may look different depending on the device manufacturer.
Usually it is located immediately after the “Location” item.
Move the slider to the “Enabled” position in the “Unknown sources” line. This change will allow the installation of applications not from the Play Market.
Now you can return to the Notification Panel (see STEP 1) and click on the message about downloading the installation file. After this, the installation of the application will begin.
If there is no download notification, you can always find the file in “Downloads” or in the file manager.
Click on the “Install” button.
“Change or delete the contents of USB storage” is the standard permission for all applications on your device. It allows you to install a program using the memory of your device.