Suspect a contact has blocked you on LINE, but LINE refuses to confirm it? Messages stay forever as "unread" with no error icon, the avatar still loads, calls don't bounce — the blocked person feels nothing different on their end. That's by design.
This guide walks through the 6 detection methods that still work in 2026, with what each one actually proves, where it fails, and the one method that scans your entire friend list in 5 seconds without leaving any trace on the other side.
Why doesn't LINE tell you who blocked you?
LINE's block behavior is intentionally hidden — this is a product decision, not a bug:
- Your messages don't bounce and never show a red exclamation — they sit forever as "unread."
- Voice and video calls show "calling" on your side, but the other person's phone never rings.
- Your stories, read receipts, and profile updates — they can't see any of it, but you still see theirs.
In other words, the blocked person can't tell anything has changed. That's why "how to tell if someone blocked you on LINE" is one of the most-searched LINE questions every month — the platform is engineered so you can't easily find out.
LINE's official Help Center states it directly: "Even if you hide, block, or delete someone, they will not be notified." It's the policy, not a loophole.
6 Ways to Tell If You're Blocked on LINE
The principle behind every method is the same: find a signal that changes when you're blocked but doesn't change otherwise. Each method below has trade-offs — by the end you'll know which one fits your situation.
Method 1: Place a voice call and watch the top-left icon (fastest, but noisy)
Dial a LINE voice call and look at the top-left corner of your screen:
- A green phone icon appears = not blocked, the call is going through (their phone may just be on silent).
- Only a timestamp with no green icon = likely blocked.
The catch: "phone on silent," "not added as a friend," and "weak signal" all produce the same screen. So this method on its own is inconclusive — cross-check with another signal. Full read-out: What does it look like when you call someone who blocked you on LINE?
Method 2: Send a paid sticker as a gift (popular, but slow)
In the LINE sticker shop, pick a paid sticker the contact probably doesn't own (the more obscure, the better). Tap Send as Gift and select their name:
- "This person already owns this sticker" message = likely blocked (LINE uses this to silently block the gift).
- You can proceed to payment selection = not blocked.
Works one contact at a time. Testing 50 friends means buying stickers and waiting 50 times. Mechanism and step-by-step: LINE sticker test method explained
Method 3: Create a fake group and watch the invite list (effective, but risky)
Start a new group and try to invite the contact:
- Their name doesn't appear in the invite list, or you can't select them = blocked.
- Name appears normally and the invite goes through = not blocked.
The risk: if the contact is online, they receive a group invite notification — embarrassing. The upside is you can scan multiple contacts at once.
Method 4: Watch their profile photo and status updates (subtle, but slow)
Open the contact's profile page and check:
- Is the profile photo stuck on an old version?
- Are status messages, birthday, or background image missing or frozen?
After blocking, they can't push any of these updates to you. The catch: you have to remember what their profile used to look like to spot the freeze. Only useful for contacts you observe regularly.
Method 5: Check LINE VOOM stories (quick, but ambiguous)
Open LINE VOOM (formerly Timeline) and look for the contact's recent posts:
- They post stories often, but you see nothing from them = likely blocked OR removed from their share list.
- You can see their stories = not blocked (and not excluded from sharing).
VOOM visibility is also affected by per-contact share settings, so invisibility doesn't guarantee a block.
Method 6: One-tap scan with LINE Block Checker (recommended)
Methods 1–5 share three problems: slow, noisy, sometimes detectable. If you have more than a couple of contacts to check, or just want a clean answer, use an app instead.
LINE Block Checker signs into your LINE account once, scans your entire friend list in one pass, and lists every contact who has blocked you. A 300-contact list scans in under 5 seconds. Detection sends no messages, no stickers, no calls, no group invites — zero footprint on the people being checked.
Full step-by-step (with every screen): LINE Block Checker tutorial
Manual methods vs one-tap app: my real numbers
Disclosure: I built this app. The numbers below are my own usage logs — read with that in mind.
The reason I built LINE Block Checker is that I personally wanted to know whether someone had blocked me, and the only options were sticker tests and fake groups. I gave up after the third awkward attempt — embarrassing, expensive, and impossible at scale.
After studying LINE's publicly documented behavior, it turned out that block status can be queried via the signed-in user's own identity — which is why every LINE block detector requires you to sign in. So we replaced "one-by-one trial and error" with "sign in once, scan once, see everyone."
In testing, a 300-contact friend list scans in under 5 seconds. Manually, the same list takes an entire afternoon.
What to do once you've confirmed a block
Detection isn't the endpoint — these are the questions that usually come next:
- Will they know I'm checking? No. Stickers, profile checks, and the app are silent. Only "phone calls" and "group invites" leave a footprint.
- What's the difference between blocking and deleting a friend on LINE? They're different actions with different reverse behavior — see: LINE block vs delete friend
- How do I unblock someone? Can I unblock myself? You can only unblock contacts you blocked. If they blocked you, only they can lift it. See: How to unblock on LINE
- Is there any way back after being blocked? Not via LINE controls — but the relationship side has options: Is there any recovery after being blocked on LINE
Frequently Asked Questions
What does LINE look like when someone blocks you? Do messages show an error?
No error. Messages stay permanently "unread" — no red exclamation, no bounce. LINE is designed so the blocked person sees nothing different — which is exactly why message behavior alone won't tell you.
Can I still call someone who blocked me on LINE?
You can dial — your end shows "calling" — but their phone never rings and they see no missed-call record. It's a common DIY signal, but "phone on silent" or "weak reception" produce the same picture, so it's not conclusive on its own.
Will the person I check find out?
No. LINE Block Checker sends zero messages, stickers, calls, or group invites during detection. The contacts you check have no way of knowing — that's the core difference vs sticker testing.
What's the difference between blocking and deleting a friend on LINE?
- Block: the contact stays in your friend list, but their messages to you are filtered out and they can't see your stories.
- Delete: the contact disappears from your list — but they can still send messages to you (you just won't receive them).
How do I unblock someone on LINE?
For someone you blocked: open LINE → Settings → Privacy → Blocked list → tap Unblock next to the name. If they blocked you, there's nothing on your side that can lift it — only they can.
Can I still see their profile photo if I'm blocked?
You can still see the profile photo as it was before they blocked you, but any updates after the block are invisible to you. The signal isn't "can I see their avatar," it's "have they updated and I missed it."
Are detection methods the same on iPhone and Android?
Yes. LINE block behavior is identical across iOS and Android — block is an account-level setting, independent of which OS you run.
Find out who blocked you on LINE
If you only want to check one or two specific contacts and don't mind trying methods one at a time, any of methods 1–5 will do. If you want a complete list in 5 seconds without leaving any footprint on the people being checked, download LINE Block Checker.
Or visit the LINE Block Checker product page to learn more.
Related reading
- LINE Block Checker step-by-step tutorial — every screen of the app explained
- Does the other person know when you block someone on LINE?
- What it looks like when you call someone who blocked you on LINE
- How to unblock on LINE — complete tutorial
- LINE block vs delete friend: what's the difference
- LINE sticker test method explained
- Is there any recovery after being blocked on LINE?