How it works and FAQ

🛡️ How SecureFone Works

Hardened OS. Encrypted protection. Complete control.

SecureFone devices are powered by GrapheneOS — a high-security, open-source mobile operating system based on Android, built specifically for Google Pixel hardware.
Where typical phones track users and collect data, GrapheneOS offers a hardened, de-Googled, encrypted platform for those who demand privacy and control.


🔐 Key Security Features

🔒 Full Device Encryption

  • Uses AES-256 file-based encryption (FBE) for all user data
  • Encryption keys are protected and managed by the Titan M2 security chip
  • Without your PIN/password, data remains cryptographically inaccessible

🧠 Advanced Exploit Mitigations

  • Defends against memory exploits using Control Flow Integrity (CFI), Shadow Call Stack, and hardened malloc
  • Includes kernel hardening, stricter seccomp policies, and fortified system libraries

🧱 App Isolation & Sandboxing

  • Each app runs in its own strict sandbox, isolated from system and user data
  • You can restrict network access per app
  • Enhanced SELinux policies provide extra process-level separation

🚨 Duress Mode & Secure Wipe

  • Duress PIN unlocks a decoy profile while keeping your real encrypted data hidden
  • Auto-wipe option securely erases user data after multiple failed login attempts
  • No visible signs of self-destruct behavior — fully discreet

🧩 App Compatibility & Freedom

  • ✅ Use apps from F-Droid, Aurora Store, or direct APKs
  • ✅ Optional sandboxed Google Play support (Google apps with zero system access)
  • ❌ No Google spyware, no preinstalled Play Services, no background telemetry

👥 Built for Critical Professionals

Designed for:

  • 📰 Journalists and whistleblowers
  • ⚖️ Lawyers, medical professionals, therapists
  • 🧑‍💻 Cybersecurity specialists and engineers
  • 🕊️ Human rights defenders and NGOs
  • 🧍 Anyone who values personal sovereignty and data protection

✅ What You Get with a SecureFone

  • 📱 A Pixel phone preinstalled with the latest verified version of GrapheneOS
  • 🔒 Secure Boot enabled and bootloader locked for maximum integrity
  • 🧩 Optional apps preinstalled, like Signal, KeePassDX, Simple Mobile Tools
  • 🧠 Your choice of private configurations — no accounts required

🧾 Technical Footnotes

Sandboxed Play Services: Runs as a regular app without special permissions or privileges — prevents Google from accessing other apps or device identifiers.

File-Based Encryption (FBE): Allows separate encrypted storage contexts for each user profile.

Titan M2 Chip: A secure enclave processor used to store encryption keys, manage verified boot, and protect from rollback attacks.

Duress PIN: Requires at least two user profiles (main + decoy). Setup involves configuring secondary users with no sensitive data.

Auto-Wipe Functionality: Optional via user-side configuration or scripts (e.g. through reboot_on_userlock_failure + wipe_user_data_after_failures).

GrapheneOS OTA Updates: Signed with reproducible builds, verified cryptographically, and delivered directly over HTTPS.

Sandboxed Play Services: Runs as a regular app without special permissions or privileges — prevents Google from accessing other apps or device identifiers.


FAQ

📲 Can I install [app name] on the SecureFone Smartphone?

Most likely, yes. You can install apps using:

  • F-Droid (for open-source apps)

  • Aurora Store (access to Google Play apps without a Google account)

  • Or direct APKs (if you trust the source)

Need a specific app? Just ask us — we’ll help you check compatibility.

👶 I’m not technical — can I handle this?

Absolutely. SecureFone is preconfigured and ready to use out of the box.
If you can use a regular smartphone, you can use SecureFone. We remove unnecessary complexity and include an optional quick-start guide and support resources to help you get started.

You don’t need to be a hacker or IT expert to protect your privacy.

🔧 Why do you use Google phones?

Because Google Pixel devices are the only modern smartphones that support full Verified Boot with user-controlled keys, hardware-based security (Titan M2 chip), and open-source firmware for critical components.
These devices allow GrapheneOS to replace the stock OS completely and enforce deep security hardening — something no other mainstream phones currently support.

In short: Pixel phones offer the best foundation for security, privacy, and control.

🗺️ Can I install Google Maps, Gmail, or other Google applications?

It is not advised but yes, you can. SecureFone supports sandboxed Google Play Services, which means:

  • You can install and use apps like Google Maps, Gmail, and YouTube

  • Google Services run in user space (like regular apps), without privileged access or tracking

You get access to the apps without compromising your system’s privacy or security.

🧑‍🤝‍🧑 My friends are still on WhatsApp and Facebook — can I install that?

Yes. You can install WhatsApp, Facebook, Instagram, and other popular apps.
We strongly recommend privacy-respecting alternatives like Signal, but we understand you may need to stay in touch with others — and SecureFone gives you the freedom to choose.

🛡️ Why do you choose this operating system?

GrapheneOS is the most secure and private mobile OS available today — used by journalists, lawyers, and security professionals worldwide.
It improves Android’s privacy model, enhances app sandboxing, and adds exploit protection and hardware-level encryption — all while staying fast and easy to use.

Unlike other “de-Googled” phones, GrapheneOS is actively developed by security researchers and supports timely updates and verified boot.

🔐 How does the SecureFone Smartphone protect my privacy?
  • No Google telemetry or background tracking

  • App sandboxing keeps apps isolated from each other

  • Per-app network, sensor, and permission controls

  • Encrypted storage tied to your secure lock screen

  • Hardware security chip (Titan M2) handles key protection and verified boot

  • Duress login and optional self-destruct for high-risk situations

It’s a full-stack approach — from hardware to software — to protect your digital life.

🤔 Why is the SecureFone Smartphone a better choice than other privacy phones?

Most “privacy phones” are either:

  • Stock Android with a few tweaks — still leaking data

  • Linux phones — not usable for daily communication

  • De-Googled phones — lacking updates or critical security

SecureFone with GrapheneOS is different:

  • ✅ Weekly updates, full hardware support

  • ✅ Locked bootloader & verified boot

  • ✅ Security hardened by experts

  • ✅ Real user freedom and app compatibility

🚫 Are there things I can’t do on a SecureFone Smartphone?

You won’t be able to:

  • Use Google Assistant or device-wide voice commands

  • Use push notifications for some Google-dependent apps (unless Google Services are installed)

  • Link your phone to proprietary Google ecosystems like smart homes or Android Auto — unless you re-enable those parts

But for most users, daily functionality like messaging, maps, browsing, and email works great — without the surveillance.

📞 Can I use my current SIM card and phone number?

Yes. SecureFone works with all standard 4G/5G SIM cards from major carriers.
Just insert your SIM and you’re good to go — your phone number stays the same.
We recommend avoiding carrier apps or profiles to reduce tracking, but that’s optional.

⚠️ Why do I see a warning about a different operating system when I turn on my phone?

This is expected behavior. Google Pixel devices show a “Your device is loading a different operating system” warning when the verified boot process detects a custom OS — such as GrapheneOS — instead of Google’s stock Android.

This message appears because:

  • GrapheneOS replaces the factory-signed firmware with its own cryptographically signed OS

  • The bootloader remains locked and secure, but the OS is not signed by Google, so the device shows a cautionary prompt

There’s no danger — your phone is still secure.
In fact, this message is a good sign: it means verified boot is working, and your OS hasn’t been tampered with.

🔒 SecureFone devices are fully verified and locked before shipping. The bootloader warning simply reflects your choice to run a privacy-respecting, custom OS.

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