Pure Mode Guide

Huawei
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Open the "Settings" app on your phone.
Scroll and find the "System and Update" option.
Click on "Pure Mode".
Find the "Enhanced Protection" switch and turn it off.
After disabling Pure Mode, you can install third-party apps, such as via APK files.

Open the "Settings" app on your phone.
In the settings menu, find and click on "Application Settings".
In the application settings, find and click on the "Pure Mode" setting item.
On the pure mode settings page, click the "Disable Pure Mode" button at the bottom.
The system will pop up a closing reminder interface, and select "Verify and Close".
After verification is complete, pure mode can be disabled.
To ensure that APKs from unknown sources can be installed, you can install APKs after completing the function settings.

Open the "Settings" menu on your phone.
In the "Settings" menu, find and click on "Security" or "Application Permissions".
In the Security or Application Permissions menu, find and click on the "Unknown Source Apps" option.
After enabling the "Unknown Source Apps" option, you will see a list of installed apps.
In the app list, find the application you want to allow to install and enable the "Allow installation from this source" option for that app.
Please note that enabling the "Unknown Source Apps" option will provide support for all unknown source apps on your device, which may increase the risk of your device being attacked by malicious software. Therefore, to maximize the protection of your phone, you should only install apps from trusted sources and disable the "Unknown Sources" option as needed.