Blocking Android by IMEI: a complete guide to protecting data

The loss or theft of a smartphone is a stressful situation, but modern technologies can minimize damage. Blocking by IMEI (International Mobile Equipment Identity) is one of the most effective ways to make a device useless for attackers. This unique 15-digit code is “tied” to the hardware of the phone, and blocking it through the operator database or state registries makes it impossible to use the device on mobile networks.

However, it is important to understand: blocking by IMEI does not erase data from the device and does not guarantee its return. Its main task is to prevent the phone from being used on cellular networks, reducing its attractiveness to thieves. In this article, we will look at all the current blocking methods for owners of Androiddevices, from official services to alternative methods, and will also tell you what to do if the IMEI is unknown or the device was restored after blocking.

⚠️ Attention: Blocking procedures may vary depending on the country, operator and phone model. In some regions (for example, in the EU), blocking through the operator is automatically synchronized with the pan-European database CEIR, which makes it more effective. Check with your provider for details.

What is IMEI and why its blocking is effective

IMEI (International Mobile Equipment Identity) is a unique identifier of your device, which is assigned at the production stage. It consists of 15 digits and is used by telecom operators to identify the phone on the network. When you block IMEI, the device ends up in the “black list”, and operators refuse to provide it with access to mobile communications - calls, SMS and mobile data.

The effectiveness of the method is due to several factors:

• 🔒 Global action: In most countries, operators exchange databases of blocked IMEI, which complicates the use of the phone even after flashing.
• 📱 Independence from the SIM card: The lock is tied to the hardware, not the SIM card, so replacing the card will not help bypass the restriction.
• 🛡️ Additional protection: Even if a thief resets the phone to factory settings, the IMEI will remain blocked.

However, the method also has limitations. For example, blocking does not prevent you from using the phone in Wi-Fi or through instant messengers with voice calls (like WhatsApp or Telegram). Also, some unscrupulous services offer “cleaning” of IMEI, which is technically possible, but illegal.

How to find the IMEI of a phone if it’s lost

If you didn’t write down the IMEI in advance, it can be restored in several ways - even without access to the device itself. Here are the most reliable methods:

1. Through the box or documents

• 📦 Sticker on the original packaging (usually under the barcode).
• 📄 Warranty card or receipt - some stores indicate IMEI in the documents.

2. Through a Google account

If the phone was linked to Google account, try:

1. Go to the page "Find device" (authorization required).
2. Select the lost device in the list.
3. IMEI will be listed in the "Device Information" section (if the phone has connected to the Internet at least once).

3. Through the settings of another Android device

If you have a second phone on the same account Googletry:

1. Open Settings → Google → Google account management.
2. Go to section Security → Your devices → Device management.
3. Find the lost device in the list - the IMEI may be displayed there.

⚠️ Attention: If the phone was purchased secondhand without a box and is not linked to Google account, it is almost impossible to restore the IMEI after the fact. In this case, contact the seller (if correspondence or payment data is saved) or the police with a fraud report.

Official methods of blocking IMEI in 2026

In Russia and most countries CIS IMEI blocking is carried out through telecom operators or government services. Let's consider current methods.

1. Through a mobile operator

This is the fastest method, but it only works if the phone was officially purchased and is not a “gray” import. Algorithm of actions:

1. Call support of your operator (numbers: MTS — 0890, Beeline — 0611, MegaFon — 0500, Tele2 — 611).
2. Inform that the phone is stolen/lost and provide the IMEI.
3. Provide your passport details and service agreement (if required).
4. Confirm the blocking via SMS or email.

⚠️ Attention: Some operators may request a copy of the police report about the theft. Without this document, the blocking may occur. be temporary (for 3–5 days).

2. Through the portal "State Services" (for Russia)

Since 2023, a single database of blocked IMEIs has been operating in Russia, supervised by the Ministry of Digital Development. To add a device to the blacklist:

1. Login to Government services.
2. Go to section Services → Digital technologies → IMEI blocking.
3. Fill out the form indicating IMEI, passport details and reason blocking (theft/loss).
4. Attach a scan of the statement to the police (required!).
5. Wait for processing (up to 3 business days).

After blocking through “State Services”, the IMEI will be included in the all-Russian database, and the phone will not be able to work with any operator in the Russian Federation - even after flashing or replacing the SIM card.

3. Through the Google “Find Device” service

This method does not block IMEI directly, but allows you to remotely block the phone and erase data, which will further protect your information:

1. Go to Find page device".
2. Select the lost phone in the list.
3. Click Safe Mode (locks the device) or Erase data (full reset).
4. Confirm the action via SMS or email.

Make sure that the IMEI is recorded correctly|Save a copy of the receipt/agreement for the phone|Submit a police report (for official blocking)|Unlink bank cards from Google Pay/Samsung Pay|Erase data via “Find device” (if the phone is on communication)-->

Alternative blocking methods (if IMEI is unknown)

If you cannot restore IMEI, try the following methods to restrict access to your phone:

1. Blocking via Google account

Even without IMEI you you can:

• 🔐 Lock the device via "Find device" (account password required).
• 📛 Delete all data remotely (if the phone is connected to the Internet).
• 🛡️ Revoke access to applications (for example, to Google Pay or Gmail).

2. SIM card blocking

This will not block the phone itself, but will prevent calls and SMS:

1. Call operator and ask to block the SIM card by number.
2. Order a new SIM with the same number (usually free).

3. Contacting the police

If the phone is stolen, file a report with the police. In some regions, law enforcement agencies may initiate IMEI blocking through operators even without your direct request (for example, if the phone is stolen). is listed in the database of stolen items).

What to do if the phone is found after IMEI blocking?

If you found the phone or it was returned, the IMEI blocking can be removed. To do this:

1 Contact the operator with your passport and documents for the phone.

2. On "State Services" submit an application for unlocking (section Digital technologies → Unlocking IMEI).

3. If the blocking was through Google, simply unlock the device through search service.

Attention: unlocking may take up to 5 business days!

What to do if the IMEI has been changed or “cleared”

Unscrupulous services offer IMEI “reset” services, which is technically possible through the engineering menu or firmware. However, this is illegal and fraught with problems:

Consequences of changing IMEI:

• ⚖️ Legal liability: In Russia and many countries, changing IMEI is equated to fraud (Article 159.6 of the Criminal Code of the Russian Federation).
• 📵 Network problems: You may lose your phone connection or operation is unstable.
• 🔧 Loss guarantees: Manufacturers (for example, Samsung or Xiaomi) will void the warranty if a changed IMEI is detected.

If you suspect that your phone was restored with a changed IMEI:

1. Check the current IMEI using the code *#06# (if you have the phone in your hands).
2. Compare it with the original (from the box or documents).
3. If the IMEI has been changed, contact the manufacturer's service center - they can restore the original code using the serial number.

⚠️ Attention: If you bought a phone secondhand and discovered that its IMEI has been changed, this may mean that the device is listed as stolen. In this case, it is better to refuse the purchase or contact the police for verification.

How to check if the IMEI is blocked before buying a used phone

Before buying a handset, be sure to check its IMEI for blocking. This will save you from purchasing a “brick”. Here's how to do it:

Verification method	Instructions	Notes
Via code *#06#	Dial on your phone *#06# - will be displayed IMEI.	Works on any device, even without a SIM card.
Service IMEI.info	Enter IMEI on the website imei.info.	Shows the blocking status in some countries (for example, the USA or the EU).
Ministry of Internal Affairs database (Russia)	Check IMEI via Ministry of Internal Affairs website (section “Checking stolen items”)	Relevant only for phones listed in wanted.
Communication operator	Ask the seller to insert your SIM card and check the connection.	If the phone does not receive the network, the IMEI may be blocked.

⚠️ Attention: If the seller refuses to provide IMEI for verification or asks to pay in advance, this is a reason to doubt in the fairness of the transaction. Also avoid phones with “gray” IMEI (for example, starting with 0049 or 0044 - this is a sign of a fake).

Frequent errors when blocking IMEI and how to avoid them

Many users encounter problems due to incorrect blocking actions. Here are the most common mistakes:

1. Incorrectly written IMEI

A typo in one digit will make the blocking ineffective. Always double-check the code through several sources (box, phone settings, Google account).

2. No statement to the police

Without documentary evidence of the theft, operators may refuse to block or make it temporary. Always file a statement with the police - this will speed up the process.

3. Blocking only the SIM card

Many limit themselves to blocking the SIM, forgetting about the IMEI. In this case, the thief will simply insert another SIM card, and the phone will work.

4. Ignoring remote data clearing

Even after blocking the IMEI, attackers can get it. access to your data via Wi-Fi. Always erase information via Find device.

FAQ: Answers to frequently asked questions

Is it possible to unlock IMEI after blocking?

Yes, but only through the operator or “State Services” (in Russia). This will require a passport, documents for the phone and sometimes a certificate from the police about the return of the device. Unblocking takes from 1 to 5. working days.

Will a phone with a blocked IMEI work abroad?

Depends on the country. In the EU and the USA, operators synchronize the databases of blocked IMEIs, so the phone will not work in some countries in Asia or Africa.

Is it possible to block the IMEI if the phone was purchased for foreign countries? border?

Yes, but the procedure may differ. For example, in the EU there is a system CEIR, and blocking must be requested from the local operator. In Russia, foreign phones are blocked through “State Services”, but translation of documents may be required.

What to do if the operator refuses to block IMEI?

Require a written refusal and file a complaint with Roskomnadzor or the Ministry of Digital Development. You can also block the IMEI through the police - they have the right to initiate the procedure without the operator’s consent.

Will the operator block the IMEI if the phone was lost and not stolen?

Yes, but some operators may request additional documents (for example, a statement) about loss to the police). In any case, blocking is possible - the main thing is to confirm that you are the owner of the device.