If you are looking for a way to use Signal Without Phone Number, it is likely that you are thinking in terms of using it on a secondary mobile device that does not have its own phone number or SIM Card installed on it.
Apart from this, there are users who may want to use Signal on a primary mobile device, company provided phone or business use phone, without associating their main phone number or business phone number with Signal Account.
Use Signal Without Phone Number
All that is required to use Signal on a mobile device without phone number is to verify your Signal Account by using a Landline Phone Number or a Virtual Phone Number.
Once your Signal Account is verified, the virtual phone number is no longer required and it is not at all used by Signal to send/receive messages and make/receive phone calls.
The same solution is applicable, if you want to use Signal on your primary mobile device, company provided phone or business use phone, without using your primary, company provided or business phone number.
1. Verify Signal Using Landline Phone Number
Based on our testing, the best way to use Signal on an iPhone or Android Phone that does not have a phone number or SIM card installed on it is to verify Signal using a Landline phone number.
1. Download Signal Private Messenger from Google Play Store (Android Phone) and from App Store (iPhone).
2. Once the download is completed, open the Signal App and follow the instructions to Install Signal Messenger on your mobile device.
3. When prompted, provide Signal with the permission to send notifications and access your Contacts.
4. On the next screen, select Country > enter your Landline Phone Number and tap on Next.

5. On the next screen, wait for 60 seconds and tap on I didn’t get a code.

6. On the pop-up, select Call Me Instead option and wait for Signal to send an automated call to your Landline phone number.

7. Receive the automated call from Signal on your Landline > Note down your Six-digit verification code and enter the Code on the next screen to verify your Landline phone number.

Once your Landline Phone Number is verified, you can start using Signal Messenger on your iPhone or Android Phone, even if it does not have its own Phone Number or SIM Card installed on it.
2. Verify Signal Using Virtual Phone Number
If you do not have a Landline Phone Number, you can make use of a virtual phone number as provided by TextNow, TextFree, Google Voice and other VoIP providers to verify your Signal Account.
For the steps to get Virtual Phone Number, you can refer to this guide: How to Get Virtual Phone Number (Free & Paid).
Once you get your virtual phone number from any VoIP service provider, you can follow the steps below to create your Signal Account.
1. Download Signal Private Messenger on your mobile device.
2. After the App is downloaded, open the Signal App and follow the instructions to Install Signal Messenger on your mobile device.
3. When prompted, provide Signal with the permission to access your Contacts and send notifications.
4. On the next screen, select Country > enter your Virtual Phone Number and tap on Next.

5. On the next screen, wait for 60 seconds and tap on I didn’t get a code.

6. On the pop-up, select the Call Me Instead option and wait for Signal to send an automated call to your Virtual Phone Number.

7. Receive the automated call from Signal on your Virtual Phone Number > Note down your six-digit verification code and enter the Code on the next screen to verify your virtual phone number.

Once your Virtual phone number is verified, you can start using Signal on your phone, even if it does not have its own phone number or a functioning SIM card.