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For increased security, Signal uses a PIN. You will be asked to enter this PIN the next time you register your phone number with Signal. If you forget your PIN, you may be locked out of your account for up to 7 days.
Why do I see two PINs?
Signal PINs are different from the SMS verification code that is used during the registration process and they are also unrelated to the device passcode that you may be asked to enter if screen lock is enabled.
How do I manage my PIN?
Signal Settings > Privacy > PIN
How long can my PIN be?
There is no limit. Feel free to add as many characters as you want.
How does Signal help me remember my PIN?
Signal includes a built-in reminder feature that uses spaced repetition. To help you memorize your PIN, Signal will periodically ask you to confirm it. These reminders occur at the following intervals after the feature is first enabled:
- 12 Hours
- 1 Day
- 3 Days
- 7 Days
- 14 Days
Can I turn off these reminders?
It is important to memorize your PIN, and the reminders cannot be disabled. You will see the reminders less frequently if you consistently enter your PIN correctly. The reminders will become more frequent if multiple attempts are necessary.
What if I forget my PIN and need to register on a new phone?
If you have access to the active mobile device, you can change the PIN at any time (Signal Settings > Privacy > PIN). If you don't have access to your old phone, you will need to wait for the PIN to expire.
When do PINs expire?
PINs expire after 7 days of inactivity. If you don't have access to the previously registered device and cannot remember your PIN, you will be able to register for Signal again after waiting for this expiration period to pass.
How does Signal help ensure that PINs don't expire for less active users?
The expiration timeout counter is reset whenever a client connects to the Signal service. In addition to activities like sending or receiving a message, the Android and iOS apps will make occasional requests to the server so that the PIN is kept alive.
What if I only see a numeric keyboard for my alphanumeric PIN during registration?
- Update to the latest version of Signal.
- Tap “Enter Alphanumeric PIN” then enter your pin.
- Some iOS users can copy and paste their PIN and it will be accepted. You can update or create a new PIN after you register.
What can I do if I don’t see an option to create an alphanumeric PIN?