3 min read
First, check for a way around
- Look for “Use email instead” or “Sign up with Google/Apple”
- Some apps ask for a phone only later, for example before posting or paying
- On the web version, the phone step is sometimes optional when the app version insists
When the phone is mandatory
Use a number that isn’t yours: a private temporary number receives the code, and your personal number never enters the app’s database.
Afterwards
- Add an email you control
- Turn on an authenticator app or passkey
- Remove the temporary number from the account if the app lets you
Why bother
A phone number is a permanent ID: it links your accounts, it’s what data brokers sell, and it’s the target of SIM-swap attacks. Giving it to fewer apps means less to leak.