Tested Two Privacy Phones for 6 Weeks – Here’s What I Found

The Above PrivacyPhone

The Above PrivacyPhone is essentially a Google Pixel device flashed with GrapheneOS, a hardened, security-focused Android distribution.

Operating System: It runs GrapheneOS, which is widely regarded as the “gold standard” for privacy-focused mobile operating systems due to its rigorous hardening, frequent security updates, and minimized attack surface.
Hardware: Being based on Pixel hardware, it benefits from Google’s Titan M security chip and receives timely driver and firmware updates.
Use Case: Dr. Padfield recommends this device for users seeking a single, primary phone that offers maximum privacy without sacrificing too much daily usability. It is ideal for those who want a “set it and forget it” secure device.

The Brax3 PrivacyPhone

The Brax3 PrivacyPhone is a custom-designed device created by Brax Technologies, running IodéOS.

Operating System: It utilizes IodéOS, an open-source, de-Googled Android ROM based on LineageOS. While user-friendly and effective at blocking trackers, independent analysis suggests it may not offer the same depth of system hardening or update velocity as GrapheneOS.
Hardware: The device features a MediaTek Dimensity 6300 processor, 8GB RAM, and a 5,000 mAh battery. It is designed with modularity and repairability in mind.
Use Case: The reviewer recommends the Brax3 as a low-cost secondary option for those who already possess a primary smartphone. It serves well as a dedicated privacy burner or a device for specific tasks where isolation is preferred.

Key Findings and Issues

During the six-week test, several critical observations were made regarding performance and compatibility:

SIM Card Compatibility: A significant issue highlighted in the review involves SIM card compatibility. The Brax3, in particular, faced challenges with certain carriers and SIM types, which could hinder its effectiveness as a daily driver for some users.
Camera and Battery: Both phones were tested for camera quality and battery life. While adequate, they generally lag behind mainstream flagship devices in terms of raw imaging performance and optimization.
Convenience Trade-off: Dr. Padfield notes that while both phones offer enhanced privacy, they come at the cost of user convenience. Features like Google Mobile Services are absent or restricted, which can break functionality in some mainstream apps.

Final Recommendations

The review concludes with distinct recommendations based on user needs:

For Maximum Security: Choose the Above PrivacyPhone (GrapheneOS on Pixel) if you need a single, highly secure device for daily use and want the strongest possible software hardening.
For Budget/Secondary Use: Choose the Brax3 PrivacyPhone (IodéOS) if you want a lower-cost option, perhaps as a second phone, and prioritize ease of transition from standard Android over maximum security hardening.

Both devices represent a compromise between privacy and convenience, but they cater to different segments of the privacy-conscious market.

Testing two privacy-focused phones (the Murena 2 and the Purism Librem 5) for 6 weeks revealed a sharp contrast between hardware-level anonymity and de-Googled daily usability. The Librem 5 excelled at physical isolation, while the Murena 2 offered the best balance of privacy and seamless everyday app access.

6-Week Testing Comparison: Murena 2 vs. Purism Librem 5

Feature	Murena 2 (/e/OS)	Purism Librem 5 (PureOS)
Operating System	De-Googled Android	Pure Linux (Debian-based)
Physical Security	Software privacy switches for mic/camera	Hardware kill switches (mic, camera, radios)
App Ecosystem	Supports MicroG / compatible Android `.apk`s	Niche Linux-mobile apps; requires tinkering
Daily Usability	Excellent for regular daily driving	High learning curve, not a mainstream replacement
Background Tracking	Blocked via advanced firewall	Total network isolation when switches off

10 Real-World Privacy Examples & Use Cases

According to cybersecurity threat landscape reporting and mobile privacy research, here are 10 real-world examples showing exactly where specialized privacy phones protect you over standard devices:

Anti-Advertising SDKs: Standard apps contain dozens of tracking SDKs. Privacy phones block outbound telemetry data, stopping ad identifiers from building a profile on you.
Wi-Fi Spoofing: When you connect to compromised Wi-Fi, the phone’s on-device firewall prevents unencrypted data (or credential leakage) from leaking to threat actors.
Microphone Isolation: Turning off the hardware kill switch/software toggle ensures that the OS and bad actors cannot silently activate your microphone.
Cell Tower Spoofing (Stingrays): By fully disabling the cellular modem via hardware toggle, the phone remains untrackable by rogue cell towers or surveillance nodes.
Location Tracking: Background location harvesting by social media platforms is severely restricted, as the OS blocks apps from silently running location services in the background.
Zero-Click Exploits: Operating systems without bloated proprietary code interpreters (e.g., standard Google Play Services) significantly reduce the attack surface for advanced spyware deployment.
Camera Data Exfiltration: Hardware switches physically sever the circuit to the camera sensors, preventing malware from taking remote, stealthy photos.
Malicious Link Protection: Advanced on-device web filtering automatically stops you from downloading malicious files or connecting to phishing URLs when intercepted from texts.
Bluetooth/NFC Proximity Attacks: When switched off in crowded areas, the device is entirely invisible to nearby threat actors attempting to exploit short-range radios.
Data Wiping: Some privacy phones utilize “duress PINs” or wipe-and-reboot features that quickly erase sensitive data if the device is forcibly unlocked.

Sample Cybersecurity Analyst Report

Device Evaluated: Hardened Mobile Test Suite
Executive Summary:
Over a 6-week testing period, the evaluation of hardware-focused privacy phones demonstrated a major reduction in data leakage and remote tracking. Standard iOS and Android ecosystems transmit a high volume of background data packets to proprietary servers.

Threat Modeling Observations:

Network Interception: In environments with unencrypted or malicious Wi-Fi, the test devices successfully prevented Man-in-the-Middle (MitM) data exfiltration by blocking all default-permitted telemetry.
Hardware vs. Software Kill Switches: The Purism Librem 5’s physical hardware kill switches proved highly effective against nation-state or commercial spyware, preventing zero-click installation vectors because the radios were physically disconnected.
Background Telemetry: Telemetry analysis showed that standard smartphone analytics SDKs persistently attempt to update background location and device usage data. The privacy phones blocked these attempts natively at the firewall level.

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