How to Enable Two-Factor Authentication (2FA) on Signal

As we concluded in our comparison between WhatsApp vs Signal vs Telegram, Signal is a highly secure messaging service that offers a number of security features to guard your privacy. So in this article, we explain one of the best features of Signal and that is Registration Lock. It’s basically the two-factor authentication feature that requires you to enter an additional PIN while registering Signal on a new device. So if you want to further enhance your security and want to enable two-factor authentication on Signal then follow the steps below.

Enable Two-Factor Authentication (2FA) on Signal

Before we get to our tutorial, here are some notable points to keep in mind:

Notable Points to Keep in Mind

  • In case, you forget your PIN and have no access to your old device then you will have to wait 7 days for the Registration Lock to expire. Only after that, you will be able to log in to Signal and create a new PIN. So to be on the safe side, write down the PIN and store it in a safe place.
  • Currently, Signal does not support Authenticator apps or offer any backup codes. You need to memorize the PIN which will act as your 2FA key.
  • PIN is not your screen lock or chat/backup restoration key for Signal. It’s used for Registration Lock and preserving your profile settings.
  • Setting up 2FA on Signal will protect you in case someone manages to swap your SIM. Princeton University did an extensive study and found that US carriers granted SIM swap requests even when the caller could answer only one authentication question. So you should ensure 2FA is turned on to prevent any hijack attempts.

Set up Two-Factor Authentication (2FA) on Signal

1. First of all, tap on your profile icon at the top-left corner and open “Privacy“.

Enable Two-Factor Authentication (2FA) on Signal

2. Next, scroll to the bottom and enable “Registration Lock”. This will enable two-factor authentication (2FA) on your Signal account. Now whenever you will reinstall Signal, it will ask for the PIN along with the one-time code sent to your device.

registration lock

3. In case, you don’t remember your PIN then you can simply tap on “Change your PIN” and create a new one. You can create at least a 4-digit or a maximum 20-digit PIN. If you want, you can also create an alphanumeric PIN. Make sure you don’t forget the PIN as you will need it during reinstallation and restoration of your profile.

Enable Two-Factor Authentication (2FA) on Signal

4. Keep in mind, Signal will remind you to re-enter the PIN from time to time so it’s etched in your memory. If you find the prompt annoying then you can disable the “PIN reminders” toggle. However, I would not recommend this action if you frequently forget passwords and PIN.

pin reminders

Enable Registration Lock on Signal To Turn On 2FA

So that is how you can enable two-factor authentication on Signal. As it’s clear from the above guide, the PIN is of paramount importance and you should make sure to remember it or store the PIN in a safe location. Unlike other messaging apps, Signal is very serious about privacy so you need to walk an extra mile to guard your privacy. Anyway, that is all from us. If you want to learn more such Signal tips and tricks then head over to our linked article. And if you have any questions then comment down below and let us know.

comment Comments 1
  • Stephen B says:

    Registration lock is no longer under the Privacy settings, it’s under the Account settings.

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