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There are few things more annoying than staring at a loading screen, waiting for a text message that just never shows up. You’ve checked your signal, you’ve hit “Resend” (maybe one too many times), and still there’s radio silence.
If you’re stuck in a LINE OTP not received (fix) loop, you definitely aren’t alone. Whether you’re setting up a brand-new account or logging back into an old one, LINE’s security filters are notoriously strict. Sometimes, they’re too strict, flagging legitimate users as suspicious and locking you out before you even get started.
Why am I not getting a LINE Verification Code?
Let’s be real, while it’s easy to blame the app, the issue usually lies in the messy infrastructure between LINE’s servers and your phone.
If you’re asking, “Why am I not getting a LINE verification code?”, it’s likely one of these three culprits:
- Carrier Filtering: Your mobile provider might be aggressively treating automated texts (A2P) as spam. This is becoming increasingly common as carriers try to block robocalls.
- VoIP Restrictions: LINE aggressively blocks numbers from Google Voice or those free texting apps you find in the app store. If you’re trying to sign up with one of those, you’re likely hitting a brick wall.
- Server Lag: During high traffic, significant OTP SMS delays can occur. If the network is clogged, the code might arrive 20 minutes late, long after it has expired.
Industry Insight: It’s not just you. Over 15% of SMS verification failures are actually due to local carrier spam filters erroneously blocking international short codes.
If you can’t receive SMS while using a VoIP number, that’s expected—LINE blocks many virtual/VoIP routes.
Basic Troubleshooting: Checks Before You Panic
Before we start messing with deep settings, let’s rule out the silly stuff. Ensure your phone isn’t in Airplane Mode and that you have at least two bars of signal. Often, a simple restart forces the network to refresh, resolving issues where the LINE SMS code was not received; it was just a temporary glitch.
These quick checks solve about half of all cases:
- Toggle Airplane Mode: Turn it on for 10 seconds, then flip it off. This forces your phone to disconnect from the nearest cell tower and re-establish a fresh handshake.
- Check Storage: Is your inbox full? It’s rare on modern phones, but older Android devices will actually stop receiving texts if storage is maxed out.
- Verify the Country Code: Did you enter +1 for the US, +44 for the UK, etc.? Double-check that input field.
Warning: Do not spam the “Resend” button. If you click it more than 3 times in 5 minutes, you will likely trigger a line otp timeout, locking the account for up to 24 hours. Patience is your friend here.
Advanced Fixes: Settings, Carriers, and “Short Code” Blocks
Still nothing? If you’re seeing an “SMS verification not received” error, it’s time to dig into your phone’s “Spam & Blocked” settings. Many modern Android and iOS updates automatically silence unknown senders to protect you, but sometimes they protect you a little too well.
Here is where to look on your device:
- Android Users: Go to Messages> Settings> Spam protection. Toggle this off temporarily and request the code again.
- iOS Users: Go to Settings> Messages > Unknown & Spam. Ensure “Filter Unknown Senders” is turned off.
- Carrier Side: Some budget prepaid plans turn off international texts to save costs. You might be dealing with a line short code not received issue simply because your carrier won’t deliver it.
Stat: Users on strict prepaid plans report a 40% higher failure rate for international OTPs compared to postpaid users.
US & International Users: Why LINE OTPs Fail While Roaming
If you’re attempting to register from outside your home country, you’re likely encountering the ‘otp not received international’ error. This happens because SMS routing between international carriers is messy; they often drop “low priority” traffic, such as automated OTPs, to save bandwidth.
If you are traveling, or if you are in the US using a carrier like Verizon or T-Mobile, you might face unique hurdles:
- Roaming Issues: A line otp not received while roaming is common due to “handshake failures” between your local network and your home network. The message literally gets lost in transit.
- US Specifics: If you’re seeing line otp not received Verizon or T-Mobile errors, it often relates to strict “A2P” (Application to Person) filtering. US carriers have started categorizing some verification servers as “marketing spam” and silently blocking them.
The Fix: Use a local number for the country you are currently in, or use a digital service that provides numbers native to that region.
The “Nuclear Option”: Using a Virtual Number for Instant Verification
If your personal number is persistently blocked or you’re just worried about privacy, the fastest fix is to use a dedicated verification number, unlike the free VoIP apps that LINE blocks. Services like PVAPins provide private, non-VoIP numbers that appear to LINE’s servers as real SIM cards.
This bypasses the entire loop of not receiving the line signup verification code.
Why do most people fail here? They try to use “public inbox” sites. LINE blocks those numbers almost instantly because thousands of people abuse them.
The PVAPins Difference:
We offer unique, clean numbers from 200+ countries. These are legitimate, non-VoIP numbers that ensure high deliverability.
This guide breaks down why this happens, how to troubleshoot it for free, and how to use a private Temp number if your personal phone line is permanently blocked.
- Go to PVAPins: Choose between a rental number (if you want to keep the account long-term) or a one-time activation.
- Select Service: Choose “LINE” from the service list.
- Get Number: Pop this number into the LINE app.
- Instant Code: The code appears on your dashboard in seconds.
It’s much cheaper than buying a new burner SIM card, and it keeps your personal number private.
Pro Tip: Private, non-VoIP numbers have a 98% success rate on strict platforms like LINE, compared to <20% for free VoIP numbers.
Compliance Note: PVAPins is not affiliated with LINE Corporation. We provide telecommunication services for verification. Please ensure you follow LINE’s terms of service and local regulations regarding account creation.
LINE Login Verification Code Not Received? Try These App-Specific Tricks
Sometimes the issue isn’t the network, it’s the app acting up. If the line login verification code not received error persists, try clearing the LINE app cache (Android) or offloading the app (iOS).
Also, ensure you are using the latest version of LINE. Outdated versions often have broken API connections that can’t talk to the verification server.
If the network seems fine, try these steps:
- Clear Cache (Android): Go to Settings > Apps > LINE > Storage, then tap Clear Cache. This removes temporarily corrupted files without deleting your chats.
- Reinstall: Uninstalling and reinstalling can force a new server handshake.
- PC Login: If you’ve previously linked an email address, try logging in via the LINE PC or iPad app. While new device logins usually require phone verification, an email login can trigger a different verification method (such as a QR code scan) if you still have access to an old device.
Still Stuck? How to Contact LINE Support
If you have tried everything and are still experiencing a LINELINE support OTP issue, you can submit a “Problem Report” via LINE settings or their web form. Just don’t hold your breath.
- How to Contact: Use the line help center verification code form on their official website.
- Reality Check: Support often takes 24–72 hours to respond.
- The Alternative: If you can’t wait days for a response that might say “contact your carrier,” getting a temporary number for verification is usually the faster solution.
Stat: The average response time for primary messaging app support tickets is currently hovering around 28 hours.
FAQ
Q: Why is LINE not sending a verification code to my iPhone?
A: This is frequently caused by the “Filter Unknown Senders” feature in iOS Messages. Navigate to Settings > Messages and toggle this off, then check your “Junk” folder to see if the code was routed there by mistake.
Q: Can I use email to verify LINE instead of a phone number?
A: No, LINE requires a valid phone number for the initial account creation and verification process. Email is only used as a secondary login method or for account recovery after the account is already verified.
Q: How long does a LINE SMS ban last?
A: If you requested too many codes, you might see a “limit exceeded” error. This is a soft ban that usually lasts 24 hours. To bypass it immediately, you need to attempt verification with a different phone number.
Q: Does LINE work with VoIP numbers like Google Voice?
A: Generally, no. LINE employs strict security filters that block most virtual VoIP numbers. For a successful signup, you usually need a non-VoIP number that mimics a real SIM card, like those provided by PVAPins.
Q: What should I do if my LINE verification code expired?
A: Verification codes are typically valid for only 3–10 minutes. If yours expires, do not spam the resend button immediately. Wait 5 minutes to reset the timer, ensure you have a strong signal, and request a new one.
Q: Why am I not receiving LINE OTP while roaming?
A: International SMS delivery is notoriously unreliable due to complex carrier routing. If you are abroad, it is recommended to use a local number or a digital verification service that guarantees delivery in your current region to avoid these drops.
Conclusion
Getting locked out of LINE because of a missing code is incredibly frustrating, but it’s rarely permanent. Start by checking your signal and those hidden spam settings. If those don’t work, the issue is likely a carrier block or a banned IP.
Instead of waiting days for support to get back to you, you can take control of the situation. Whether you need to test with a free number or secure your account with a private rental, PVAPins offers the reliable, non-VoIP numbers you need to get back to chatting instantly.