Signal still needs a working phone number when you register, but you do not have to display that number to every person you contact. The practical setup is simple: register with a number you control, create a username, set both phone-number privacy controls to the level you want, and protect the account with a PIN and registration lock. A virtual number for Signal can separate registration from your personal line, but it does not remove the need to retain access to the number.
This guide focuses on privacy for your own Signal account. It does not promise anonymity, and a hidden number will not protect an account that you cannot recover.
Can you use Signal without a phone number?
No. Signal's registration flow requires an active number that can receive a verification code by SMS or, where available, by voice call. You then enter the code in the app. A username changes how people find and contact you; it does not replace the registration requirement.
That distinction matters. A second SIM, prepaid line or virtual number for Signal may keep your main number out of the signup process, but you still need reliable access during registration and whenever Signal asks you to register again. Do not use a public inbox for an account that contains important conversations. Someone else may see the code, and a recycled number can create a recovery problem later.
How Signal usernames protect your real number
A Signal username is a contact identifier rather than a public social-media profile. It must be unique and includes two digits at the end, such as “maria_work.27”. Share the username, its direct link or its QR code instead of typing your phone number into a group chat or a public form.
Signal does not provide a global username directory. A person generally needs the exact username or a link or QR code from you. That reduces random discovery, although it does not stop someone who already knows your identity from recognizing your profile name or receiving information you choose to share.
The username and profile name are separate. The username helps someone start a conversation; the profile name is what contacts see inside the chat and does not need to be unique. If you change the username, existing chats and contacts remain, but people holding only the old username will need the new one.
How to hide your phone number when registering
After installing the current Signal app, register with the number you control and finish the initial profile and PIN setup. Then open the phone-number privacy section. The exact labels can vary slightly by app version, but the two controls answer different questions:
- Who can see my number? Set this to “Nobody” if you do not want the number displayed in Signal conversations.
- Who can find me by my number? Set this to “Nobody” if you do not want people who have your number in their address book to discover you through it.
Test the result with a trusted contact rather than assuming the settings worked. For example, create the username “maria_work.27”, set both controls to “Nobody”, then ask the contact to open the username link. They should reach the chat through the link without needing your number. This is a privacy check, not proof that the account is anonymous.
One limitation remains: people who already saved your number in their own phone book may still know it outside Signal. App settings cannot erase another person's records. If your goal is to keep your real number private, do not distribute it before you change these settings.
How to create and share a Signal username
Open your profile, tap your name, and choose the username option. Enter an available name that follows Signal's current format, including the required two digits. If “maria_work.27” is unavailable, change the word or the digits rather than adding personal information such as a birth year.
Use the profile card to copy a direct link or display the QR code. A link works well in a one-to-one message or a work document; a QR code can be useful when meeting someone in person. Check the destination before sharing it publicly. A username is a route to your account, not a shield against unwanted messages.
What security settings should you add?
Use a strong Signal PIN
Signal asks you to create a PIN during setup. Store it in a password manager or another protected place. The PIN is separate from the SMS registration code. Never send either one to someone claiming to be Signal support.
Turn on registration lock
Registration lock adds the PIN as another requirement if someone tries to register your number on a different device. It cannot help if you forget the PIN and lose every active session, so record the recovery information before you need it.
Review linked devices
Open the linked-device list periodically. Remove computers or tablets you no longer recognize. If you used Signal on a shared machine, sign out and check the list immediately after finishing.
Protect the screen and notifications
Hide message previews on the lock screen, enable Signal's screen lock where available, and consider disappearing messages for conversations that do not need a permanent local copy. These settings reduce accidental exposure; they cannot stop the other person from taking a photograph or screenshot.
Is it safe to use a virtual number for Signal?
Safety depends on control and continuity, not on the word “virtual”. A paid number assigned to you for a period may be more suitable than a public free number, but you still need to check who can access incoming messages, how long the number remains yours and what happens when the rental ends.
Use this decision rule:
- Choose a number you are authorized to use.
- Confirm that you can receive the initial code privately.
- Keep the number available for the account's recovery needs.
- Change the Signal number before the number expires or is reassigned.
Suppose a number is available for 30 days and you expect to use Signal for six months. The mismatch is obvious: the number may stop being under your control after 30 days, while the account still depends on it. Choose a longer-lived number or move the account to a number you can keep before the first rental period ends. This is why a temporary number is a poor fit for a critical account.
Signal privacy checklist
- Register only a number you control or have permission to use.
- Create a username with the required two-digit ending.
- Set who can see and find your number.
- Share the exact username, link or QR code instead of the phone number.
- Save the PIN and enable registration lock.
- Review linked devices and notification previews.
- Move the account before a temporary number expires.
- Never share an SMS code, PIN or recovery detail with another person.
Frequently asked questions
Can people find me by username without a global search?
They need the exact username or a link or QR code. Signal's username feature is designed for direct sharing rather than open browsing.
Does hiding the number make the account anonymous?
No. It limits what Signal contacts see. Your profile, messages, linked devices and behavior can still identify you, and the number remains necessary for registration.
What if the verification code does not arrive?
Check the country code and number, wait for the allowed resend period, and confirm that the number can receive SMS or calls. Do not repeatedly request codes or ask another person to forward one from a shared inbox.