How to Allow and Revoke Unknown App Installations on ULEFONE Armor 21

Enabling Unknown Sources on ULEFONE Armor 21

• ⚙️ Begin by opening the Settings app on your ULEFONE Armor 21.
• ➡️ Navigate to the Apps section and then select Special app access.
• 🔍 Within Special app access, find and tap on Install unknown apps.

Granting Permission to Specific Apps

• 🎯 To allow installations from a particular app, such as Chrome, select it from the list.
• 💡 Toggle the switch to Allow from this source to grant permission.
• ✅ Once enabled, the selected app, like Chrome, will be permitted to install third-party content.

Security Risks and Revoking Permissions

• ⚠️ Be aware that installing apps from unknown sources carries security risks, as these apps are not verified by the developer and could compromise your data or device.
• 🔒 You can always revoke permissions by returning to the Install unknown apps menu, selecting the app, and toggling the switch off.
• ⏪ After revoking, the app will no longer be allowed to install unknown content.