Private messaging with no phone number, by design
Your phone number is the single most linkable identifier you own — tied to your real name, your address, your billing information, and probably your other social accounts. The instant a messenger collects it, your supposedly anonymous account is welded to your offline identity. That's why private messaging with no phone number isn't a feature in NoChat — it's the foundation.
Signing up to NoChat requires no SIM card, no SMS verification code, and no carrier interaction whatsoever. Your identity is a cryptographic key pair that lives on your device. People reach you by username or by a key fingerprint, neither of which depend on any phone carrier knowing you exist.