How to Fix Signal Verification Code Not Received

If you’re trying to get started with Signal but never receive that essential verification code, you’re not alone. This happens to quite a few folks, and it can be frustrating when you just want to start messaging securely. Having used Signal daily myself, I’ve picked up some handy tricks and insights to help get that verification code through, and I’m sharing them here so you can fix this issue quickly and move on to chatting with your friends safely.

Why You Might Not Be Receiving Your Signal Verification Code

Before diving into solutions, it’s helpful to know why Signal verification codes sometimes don’t arrive:

Network or carrier delays: Your mobile carrier might delay or block the SMS containing the code.
Incorrect phone number: A simple typo in your phone number can mean the code goes to someone else (or nowhere at all).
SMS blocking apps or settings: Sometimes, third-party apps or phone settings block unknown SMS messages.
Signal app glitches: Occasionally, the app itself can glitch and not trigger the code request properly.
Phone number already registered: If your number is already in use on another device, Signal might get confused.

Understanding these common reasons helps when you’re troubleshooting, so let's get into practical steps to fix the issue.

Step-by-Step Fixes for Signal Verification Code Not Received

1. Double-Check Your Phone Number

This one’s obvious, but it’s easy to overlook. Make sure you enter your phone number exactly as it should be, including the correct country code. For example, if you’re in the US, your number should start with +1 followed by your area code and number.

Try typing it out manually instead of copy-pasting, just to avoid hidden spaces or characters.

2. Request the Verification Code via a Call

Signal offers an alternative to SMS verification: a voice call. If SMS isn’t working, tap the “Call me” option. You’ll get an automated call that reads your verification code aloud.

Here’s what I do when I don’t get the SMS after a few minutes:

Tap “Resend SMS” once or twice, but no more to avoid getting locked out.
Wait about 5 minutes.
Tap “Call Me” and answer the incoming call immediately.

This usually works like a charm, especially if your carrier’s SMS servers are slow or blocking the message.

3. Check Your SMS and Block Settings

Sometimes your phone’s spam filters or third-party security apps silently block the verification SMS. Here’s what to do:

Look in your SMS app’s spam or blocked folder for the verification message.
Disable any SMS blocking or spam filter apps temporarily.
Ensure Signal has the necessary permissions to receive SMS on Android (go to Settings → Apps → Signal → Permissions).
On iPhone, check your message filtering settings under Settings → Messages → Unknown & Spam.

If you’re unsure, temporarily disabling any weird SMS handling apps can help isolate the problem.

4. Restart Your Phone and Signal App

Trust me, the old “turn it off and back on again” trick really helps sometimes. Restarting your phone refreshes the network connection and clears temporary glitches that might prevent SMS delivery. Likewise, force close Signal and open it again before requesting the code.

5. Use a Different Network or Wi-Fi

Signal’s verification process depends on your mobile number and network, but sometimes switching networks helps:

Try toggling airplane mode on and off.
Switch between mobile data and Wi-Fi.
If possible, try verifying on another cellular network or with a different SIM card.

Oddly enough, I once had to switch to Wi-Fi calling to get the code because my carrier was having SMS issues.

6. Wait Before Trying Again

Signal has anti-spam measures that temporarily block repeated verification attempts. If you’ve tried multiple times in a short period, wait at least 30 minutes to an hour before trying again. This cooldown period can help avoid temporary blocks on your number.

Extra Tips and Things to Know

Signal only sends verification codes via SMS or call—there’s no email option. So make sure your phone number is active and able to receive calls/texts.
Use the latest version of Signal. Outdated versions may have bugs related to verification, so keep your app updated via the Play Store or App Store.
Signal’s official help page (signal.org) often posts updates or known issues related to verification. It’s worth checking if there’s a temporary outage that affects your region.
Try verifying on a different device. If you have access to another phone, install Signal there and attempt verification to see if it’s device-specific.
If your phone number is already registered, Signal might not send you a new code. You can try unregistering your number via Signal’s support or reinstalling the app completely.

When to Reach Out for Help

If you’ve gone through all these steps and still can’t get your verification code, it might be time to contact Signal support. They’re pretty responsive and can sometimes identify issues with your number or account. Visit support.signal.org and submit a ticket explaining your problem in detail.

Also, double-check your phone number isn’t on any carrier blocklists or have issues with SMS delivery that your carrier can fix.

Wrapping It Up: Get Back to Secure Messaging

Waiting on that Signal verification code can be annoying, but with patience and a few troubleshooting steps, it usually works out. The key things to remember are:

Verify your phone number carefully and try requesting the code via call if SMS fails.
Check your phone’s SMS settings and permissions to make sure nothing is blocking the messages.

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