GrapheneOS privacy phones in the UK
Meet the new and refurbished Vellivex Pixel 9a. Understand the software, encrypted messaging, customer-owned keys and two-week UK delivery.
Vellivex · 12 November 2026
Read the buying guide ↗V / GUIDES & FIELD NOTES
Understand the tools.
Test the boundaries.
Practical guides and development logs for curious testers. Clear steps, recorded changes and visible limits.
Experimental beta. Use non-sensitive test data. Real-phone validation and independent security review are incomplete. Do not rely on these tools for sensitive communications. See what still blocks a wider launch.
Inside VVault: passphrase encryption and strict envelope parsing
The VVAULT version 1 format, PBKDF2 derivation, AES-GCM authentication and the security boundaries that remain outside the envelope.
V · Published 23 October 2026
Read the post ↗Offline integrity: verifying bytes is only half the response
How Vellivex pins offline asset hashes and response policy, handles corrupt caches and defines the trusted-origin boundary.
V · Published 23 October 2026
Read the post ↗V Cipher: QR transport, message authentication and replay boundaries
Why numbered QR frames need separate message authentication, how the two-phone roles differ, and why replay detection is session-scoped.
V · Published 23 October 2026
Read the post ↗Development log 01: key handling and offline integrity
What the latest internal review changed in key handling, offline responses and dependency checks—and what remains unverified.
V · Published 23 October 2026
Read the post ↗Development log 02: making release evidence easier to check
Reviewed source archives, download consistency and honest build-verification scope in the experimental suite.
V · Published 23 October 2026
Read the post ↗Development log 03: the validation work still ahead
The concrete device and independent-review gates we need before a wider launch, and how testers can help with harmless evidence.
V · Published 23 October 2026
Read the post ↗How to test local message encryption with VVault
Test VVault with fictional text: encrypt, save, reopen the actual file through VRelay, unlock it and check the wrong-passphrase response.
V · Published 23 October 2026 · Updated 6 November 2026
Read the post ↗How to transfer ciphertext without sharing the passphrase
Load a saved VVault file in VRelay, check and transfer its package, and keep the passphrase separate. Understand what the format check means.
V · Published 23 October 2026 · Updated 6 November 2026
Read the post ↗An Android app-firewall test checklist for VGuard
Compare selected and unselected apps, check recovery and record useful VGuard test results without treating a preview as verified protection.
V · Published 23 October 2026
Read the post ↗How to read security claims before testing a privacy app
Distinguish open source, automated tests, real-device checks and independent audits before deciding what a privacy tool can be trusted to do.
V · Published 23 October 2026 · Updated 6 November 2026
Read the post ↗Guides describe the experimental release at publication. Check each tool’s current status before testing.