Guide
The private messaging app without a phone number
Every mainstream messenger asks for your number. Here is how to message privately without one — and why a phone number is the weakest link in "anonymous" chat.
Why a phone number breaks your privacy
The moment an app requires your phone number, your "anonymous" account is welded to your legal identity, your carrier, and often your name on file. A leak, a subpoena, or a data-sharing deal exposes the link. No amount of message encryption fixes that — the identity was surrendered at sign-up.
A truly private messaging app should let you create an account out of math you generate yourself, not an identifier a carrier issued you.
How accounts work without a phone number
PrivaMesh replaces the phone number with a BIP-39 seed phrase — the same standard self-custodial crypto wallets use. The phrase derives a keypair on your device; that keypair is your identity. There is no phone number, no email, and no account stored on any server.
Keys live in the iOS Keychain, device-only and biometric-lockable. To find and verify contacts without a trusted directory, PrivaMesh publishes wallet-signed prekey bundles on-chain, so you verify a contact cryptographically instead of trusting a key server.
The honest trade-off
Self-custody means real control and real responsibility: lose your seed phrase and your device, and there is no "forgot password" — nobody else ever held it. Write the phrase down and store it safely. That is the one job a no-phone-number account asks of you.
FAQ
Which messaging apps work without a phone number?
PrivaMesh, Session, SimpleX and Threema all work without a phone number. PrivaMesh goes furthest: your account is a BIP-39 seed phrase with no server-side account at all — no phone, no email.
Is a messaging app without a phone number safe?
Yes, and often safer — there is no phone number to tie your account to your identity, leak, or subpoena. Security depends on keeping your seed phrase safe, since it is the account.