: Go to your device Settings > Security (or Privacy ) and toggle on Install Unknown Apps for your browser or file manager.
To avoid malware from fake apps, you should only download the APK from these verified sources: Download Proton VPN apk
: Open the app and log in or use Guest Mode to start browsing securely. Why Use the APK? Download VPN for Android - Proton VPN : Go to your device Settings > Security
: The Proton VPN Android Download page provides direct links to official sources. Download VPN for Android - Proton VPN :
: A privacy-focused repository where you can download the open-source Proton VPN client . Installation Guide
Because Android blocks apps from outside the Play Store by default, you must manually enable installation:
: Proton hosts its official APKs on its GitHub repository, which is rarely blocked in authoritarian countries.