Why can't I install Proton Authenticator?

The installation of Proton Authenticator may fail because of the lack of device storage, poor network connection, or the compatibility of your Android device. Therefore, please check the minimum requirements first to make sure Proton Authenticator is compatible with your phone.

How to check if Proton Authenticator is safe to download?

Proton Authenticator is safe to download on APKPure, as it has a trusted and verified digital signature from its developer.

How to download Proton Authenticator old versions?

APKPure provides the latest version and all the older versions of Proton Authenticator. You can download any version you want from here: All Versions of Proton Authenticator

What's the file size of Proton Authenticator?

Proton Authenticator takes up around 91.0 MB of storage. It's recommended to download APKPure App to install Proton Authenticator successfully on your mobile device with faster speed.

Download Proton Authenticator Latest Version 1.3.9 Android APK File

What's New in the Latest Version 1.3.9

Jul 7, 2026

Secure, end-to-end encrypted, open source, and available on every device Download the latest version of Proton Authenticator 1.3.9 to enjoy new features and updates immediately!

Fixes:
- Bug fixes and improvements.
Other:
- Updated core libraries.
- Translation updates.

Proton Authenticator FAQ

How much storage space is needed to install Proton Authenticator?

Please keep at least 91.0 MB, and additional 100-500 MB free for smooth updates and cache management after installing.

What are the system requirements for Proton Authenticator?

Your device should have system version Android 8.1+ (firstly released around 2017-12) or newer. If your phone doesn’t meet the requirements, older versions of the app are available for download.

Is Proton Authenticator safe to download?

Yes, the signature of Proton Authenticator has been verified safe by Virustotal. You could check the detail by clicking "Trusted App" tag on the app detail page.

How long does it take to download?

The package size of Proton Authenticator is 91.0 MB. Download time can vary based on your network connection. Typical speeds are: - 4G: 30-100 MB/s - 5G: 170-400 MB/s - Wi-Fi: 50-500 MB/s Bad network? Use APKPure App for faster installation.

Why do I fail to download or install?

Common reasons for download or installation failures include: 1. Lack of device storage 2. Device incompatibility 3. Poor network connection Click here to find more details.

What is APK / XAPK, and how to download them?

When downloading, you'll find two types of installation files: - APK: A standard Android installation file, ideal for devices that don't require extra data. Download and install directly. - XAPK: Includes the APK and additional resources (e.g., OBB files) for larger apps or games. Use an XAPK installer like APKPure to install. Click here to find more details.

More App Info

Package Name
proton.android.authenticator
Requires Android
Android 8.1+ (Oreo, API 27)
Content Rating
Everyone
Architecture
arm64-v8a
App Permissions
App Permissions
android.permission.CAMERA
android.permission.INTERNET
android.permission.POST_NOTIFICATIONS
android.permission.ACCESS_NETWORK_STATE
android.permission.USE_BIOMETRIC
android.permission.USE_FINGERPRINT
android.permission.WAKE_LOCK
android.permission.RECEIVE_BOOT_COMPLETED
android.permission.FOREGROUND_SERVICE
proton.android.authenticator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Security Report
Check Now
Feedback
Signature
d8e1ee3ff3a7f6ec46883c898032fe03c23eec20