How to find out that your number is blocked by another subscriber on Android: signs and verification

You send a message, but it remains with one checkmark. Call and the other end will hear an eternal buzz or immediately hang up the call. Is this a familiar situation? In 90% of cases, such symptoms mean that the subscriber is simply out of range or has turned off the phone. But what if the reason lies in blocking your number? On Androiddevices this is easier to do than it seems: just a few clicks in the settings. However, checking whether you are blacklisted is not so obvious.

In this article we will look 7 working methodshow to determine whether your number is blocked on Android —from indirect signs to technical methods using hidden phone functions. Important: none of the methods gives a 100% guarantee (due to the nature of mobile networks), but their combination allows you to draw a conclusion with high accuracy. We will also explain why some “folk” verification methods are a myth, and what to do if the blocking is confirmed.

1. Indirect signs of blocking: when to be wary

Before starting technical checks, pay attention to behavior of the subscriber's phone when interacting with you. These signs are not proof of blocking, but their combination is a reason for a deeper diagnosis.

• 📞 Calls are dropped after 1-2 beeps (or they immediately go to voicemail). Especially if previously the subscriber answered after 3-4 signals.
• 💬 SMS are not delivered (one tick in WhatsApp/Telegram or the “Not delivered” status in standard messages).
• 🔄 The call is forwarded to another number (for example, to a secretary or answering machine, although this was not the case before).
• 📵 The subscriber is “offline” in messengers, but is active on social networks (for example, putting likes or publishing stories).

⚠️ Attention: The same symptoms may indicate Do Not Disturb modeproblems with the operator's network or even double SIM card (when the subscriber uses a different number for communication). For example, if a person has Samsung Dual Messenger or Parallel Spaceenabled, he can ignore your messages in one account, but respond in another.

To eliminate technical problems, try calling the subscriber from another number. If the call goes well, this is an indirect confirmation of blocking. If not, perhaps the subscriber really has problems with the phone or SIM card.

2. Checking through standard Android functions: hidden tools

On most Androidsmartphones (especially on Samsung, Xiaomi, Huawei) has built-in tools for managing locks. They can also be used for reverse checking. Let's consider two methods:

Method 1: Call log and SMS delivery status

Open the application Phone and go to Call log. Find the number of the subscriber who may have blocked you, and pay attention to:

• ⏱️ Duration of beeps: if the call is dropped after 1-2 beeps, this is suspicious (normal: 4-6 beeps before being reset).
• 📤 SMS status: in some firmware (for example, MIUI) an exclamation mark appears next to an undelivered message.

Method 2: Test call through a hidden number

If you suspect blocking, try calling the subscriber hide your number. To do this:

1. Dial in the dialer: *67[subscriber number] (for example, *6779123456789).
2. If the call goes through normally (more than 3 rings), but from your main number is reset - this is a sign of blocking.

⚠️ Attention: Not all operators support this function. It works, and for some virtual operators (for example, MTS, Beeline And MegaFon it works, and for some virtual operators (for example, Yota or Tele2) it may be disabled.

Hide the number via *67|Call from another phone|Make sure that the subscriber has no problems with the network|Check the balance (sometimes blocking occurs due to debts)

-->

3. Checking through instant messengers: WhatsApp, Telegram, Viber

Messengers often provide more information than standard calls and SMS Let's consider the signs of blocking in popular applications:

Messenger	Blocking sign	How to check
WhatsApp	✅ One gray tick (message sent, but not delivered)	Send a message and monitor the status. If the checkbox does not turn green for more than a day, there is a high probability of blocking.
Telegram	❌ The message is not sent ("User not found" error)	Try to find the subscriber through search. If the profile is not displayed, you have been blocked or your account has been deleted.
Viber	📛 The “Delivered” status does not appear, calls are dropped immediately	Send a voice message. If it does not play (there are no two checkmarks), blocking is possible.

🔍 Important nuance: B WhatsApp blocking does not always mean that you have been added to the blacklist at the phone level. The subscriber could only block you in the messenger, but calls and SMS will still go through. To make sure, combine checks.

Also pay attention to status "Last visit" in instant messengers. If you previously saw the subscriber's online time, but now instead the message "information is hidden" - this may indicate blocking (but not always: the subscriber could simply change the privacy settings).

4. Technical methods: USSD codes and engineering menu

For advanced users, there are ways to check blocking through service codes and hidden menus Android. These methods require caution, as incorrect actions may disrupt the operation of the phone.

Method 1: Operator USSD codes

Some operators provide codes to check the blocking status. For example:

• 📱 MTS: dial *111*0887# and call (check the black list).
• 📱 Beeline: *110*782# — request information about blocking.
• 📱 MegaFon: *105*8# —check restrictions to the number.

⚠️ Attention: These codes may change or may not work in some regions. Also, operators do not always report who exactly added you to the blacklist - only the fact of blocking.

Method 2: Engineering menu (only for experienced users!)

On some smartphones (for example, Samsung or Xiaomi) you can go to the engineering menu and check the status of calls:

1. Open the dialer and enter ##4636##.
2. Go to the section Phone information → Call statistics.
3. View the status of the last outgoing call to a suspicious number. If there is a mark Call rejected or Blocked this is confirmation of blocking.

🔧 Warning: Do not change the settings in the engineering menu if you are not sure of your actions! This may lead to malfunctions of the phone.

What to do if the engineering menu does not open?

On some firmware (for example, ColorOS from Oppo/Realme) code ##4636## may not work. In this case, try the alternative code: ##8255## (for GTalk Service Monitor), but it gives less information about locks.

5. Alternative methods: calling via IP telephony and a second SIM

If standard methods do not work, try to bypass the restrictions using additional tools.

Method 1: Call over the Internet (VoIP)

Use applications like Google Voice, Skype or Zoiperto call a subscriber from another virtual number. If the call goes through, this indirectly confirms that your main number is blocked.

📌 Step-by-step guide for Google Voice:

1. Install the application and register (you will need a confirmation number).
2. Get a virtual number (available for the USA, but works for calls to Russia).
3. Call the subscriber via Google Voice and compare the result with a regular call.

Method 2: Check through the second SIM card

If you have a spare SIM (for example, from another operator), insert it into the phone and:

• 📞 Call the subscriber from a new number.
• 💬 Send an SMS.
• Compare the behavior: if calls/messages go through, your main number is most likely blocked.

⚠️ Attention: Some subscribers do not block individual numbers, and all unknown through the phone settings (for example, Reject all incoming calls except contacts). In this case, even a call from a new number may not go through.

6. How to find out who blocked your number: myths and reality

On the Internet you can find many “secret” ways to determine who exactly added you to the blacklist. Most of them are myths or fraudulent schemes. Let's look at the most common ones:

• ❌ "Applications for checking locks" (for example, Who Blocked Me or Call Blocker Detector). These apps do not have access to operator data and show random results.
• ❌ "USSD codes for viewing the blacklist". Operators do not provide such information upon request - this is a violation of confidentiality.
• ❌ "Call a short number to check". All similar services (for example, *67 or *69) work only for the last incoming/outgoing call and do not show blocking.

The only reliable way to find out who blocked you is to ask the subscriber directly to show the phone settings or honestly ask about this. All other methods give only indirect signs.

🔎 Why do not operators disclose information about blockings?

This is due to personal data law (FZ-152). The operator does not have the right to report who added your number to the blacklist, as this reveals the personal information of another subscriber.

💡

No application or USSD command can show who exactly blocked your number. All such promises are deception or phishing.

7. What to do if your number is blocked?

If you have confirmed the blocking, you have several options:

• 📩 Write through another channel (social networks, email, other messenger). For example, in Instagram or VK you can send a message even if the number is blocked.
• 📞 Call from another number and clarify the reason. Sometimes blocking occurs accidentally (for example, when setting up parental controls).
• 🔄 Change number (if the blocking is permanent and it is important to maintain communication). With most operators this can be done for free once a year.
• 🚫 Respect the subscriber's decision. If a person does not want to communicate, imposing contact can aggravate the situation.

⚠️ Attention: If the blocking occurred after a conflict or threats do not try to bypass it using technical means (for example, through IP telephony or number substitution). In some cases, this may be regarded as persecution (Article 137 of the Criminal Code of the Russian Federation).

If the blocking occurred by mistake (for example, due to a malfunction in the subscriber's phone), try:

1. Ask the subscriber to check the list of blocked numbers in the settings (Settings → Blocking numbers).
2. Check if not is the mode enabled Do not disturb with exceptions for certain contacts.

FAQ: Frequently asked questions about blocking numbers on Android

Can I find out if my number is blocked if the subscriber has an iPhone?

Yes, the signs will be the same: quick drop of calls, undelivered SMS, lack of "Read" status in iMessage. However, iPhone blocking works a little differently: calls go straight to voicemail, and SMS are not delivered at all (without notifications).

If I am blocked, will the subscriber see my messages on WhatsApp after unblocking?

No. All messages sent by you during blocking are irretrievably lostAfter unblocking, the subscriber will not receive them even as a notification.

Can the operator block my number at the request of another subscriber?

No, operators do not block numbers at the request of individuals. Blocking occurs only at the level subscriber devices (in the phone settings) or through operator’s personal account (for example, the "Black List" function in MTS Personal account. An exception is blocking by court decision (for example, when). fraud).

How to check if I myself have blocked someone’s number by mistake?

Go to settings phone:

1. For Samsung: Settings → Blocking numbers.
2. For Xiaomi: Settings → Blocking → Black list.
3. For clean Android: Phone → Three dots → Settings → Blocking numbers.

Check the list and unblock the contact if necessary.

Is it possible to bypass blocking a number?

Technically yes, but it is violates ethics and may be illegal. Ways to bypass:

• Use another number or SIM card.
• Call through instant messengers (if the blocking is only at the phone level).
• Send emails or messages to social networks.

⚠️ Warning: Using apps to spoof a number (for example, Burner or TextNow) can lead to account blocking by the operator for spam.