Free Palestine 🇵🇸

Using Signal with disappearing messages set to a really short time is probably the closest thing you can get. You can use a VOIP number from Cloaked behind a VPN to sign up anonymously.

For security reasons GrapheneOS doesn’t allow the modification of system files. You can achieve the same thing with DNS though. Either self-host a Pi-Hole or AdGuard Home, or use something like NextDNS.

I wouldn’t recommend a Pixel older than the Pixel 6 as these will soon be EOL.