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Written by: Emily Chen


In today’s digitized world, mobile devices have become an integral part of our daily lives. From managing business transactions to maintaining social relationships, we rely heavily on these devices.

Given their significance, it’s essential to understand key elements about mobile devices, particularly the International Mobile Equipment Identity (IMEI). This unique identifier not only helps in tracking devices but also ensures their network compatibility.

This article delves into the various aspects of IMEI, discussing its role, uses, and potential misuses.


Understanding the Basics of IMEI

The International Mobile Equipment Identity (IMEI) serves as a unique fingerprint for every mobile device worldwide. This 15-digit number is etched into each device during manufacturing, ensuring the exclusivity of the IMEI number to each individual device.

Even in the case of dual SIM slots, two distinctive IMEI numbers are assigned. One exemplary format for an IMEI number may be 490154203237518. Intricate structure of this identifier includes a type allocation code (TAC), a serial number, and an additional spare or check digit.

The TAC is subcategorized into a reporting body identifier and a model identifier, serving to determine the respective body issuing the IMEI and the precise model of the device.

The IMEI Number: A Key Player in Network Compatibility and Device Tracking

The IMEI number stands as a gatekeeper for network compatibility and authorization. Cellular networks, for example, AT&T, Verizon, or T-Mobile, use this unique identifier to verify the device’s compatibility, its binding to a specific carrier, or even its blacklisting status.

Blacklisting occurs when a device, reported stolen, gets its IMEI barred from connecting to any network.

Additionally, the IMEI number also functions as a unique beacon for tracking devices. In the unfortunate event of a lost or stolen device, the IMEI number facilitates reporting to law enforcement and insurance companies, as well as the device’s network carrier, enabling the latter to blacklist the device.

The Necessity for Safe IMEI Storage and Prudent Sharing

The preservation of the IMEI number in a secure location is of vital importance. This could be achieved by writing it down and storing it in a physical safe or a secure digital location.

However, it’s crucial to avoid publicly sharing the IMEI number as it is considered private and confidential.

Unauthorized sharing of this number can lead to unnecessary complications, such as false reporting of device theft, leading to an unwarranted device lockout.

IMEI Numbers in the Domain of Cybersecurity

Despite their utility, IMEI numbers can be a potential tool for hackers. Cybercriminals can utilize this identifier to track individuals or ascertain the phone’s make, model, and specifications.

Armed with this information, they can impersonate the user, execute a SIM swap, or even purchase a new phone under the user’s mobile plan.

This underlines the importance of securely storing and sharing IMEI numbers, as cybercriminals could potentially gain access to your personal calls and messages through your IMEI.

Evaluating IMEI Status Prior to Purchase

When considering a used device, verifying the IMEI status proves indispensable. Various online services, such as or, provide IMEI checking facilities. These checks disclose whether the device is blacklisted, financed, or still possesses a due balance.

This check safeguards buyers from ending up with a device which might become unusable due to discontinued payments by the original owner.

Legal and Ethical Aspects of IMEI Alteration

Altering the IMEI number of a device is technically achievable, but remains a contentious and generally illegal activity in many regions, including the United States and the United Kingdom. Such changes can stir a host of legal and ethical complications and are strongly discouraged.

For example, criminals could alter the IMEI to mask a stolen phone’s identity, which is a punishable offense, potentially leading to fines or imprisonment.

The Procedure for Locating Your IMEI

The IMEI number can be easily located within the device settings or physically on the device. Dialing *#06# on most devices presents the IMEI number on the screen.

Alternatively, the IMEI number may be imprinted on the device’s back or beneath the battery. In cases of devices with removable batteries, the IMEI can be accessed after battery removal. For iPhones, the ‘About’ section in the settings houses the IMEI number.

Ensuring the legitimacy of the IMEI before and after purchase helps avoid scams, verifying the device advertised is the device purchased. For instance, when buying a used phone online, requesting the IMEI number from the seller and confirming it with an online IMEI checker adds a layer of security to your purchase.


In essence, the International Mobile Equipment Identity (IMEI) serves a vital role in our digitally interconnected world, playing a key role in mobile device tracking, network compatibility, and cybersecurity.

It’s paramount to handle this unique identifier with utmost care, given its potential for misuse and the vital role it plays in mobile device functioning.

Whether you’re a mobile device user, a buyer of used devices, or a cybersecurity enthusiast, understanding the nuances of IMEI is invaluable in enhancing your digital safety and mobile device experiences.

We’d love to hear your thoughts! Drop a comment below.

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About The Author
Meet Emily Chen, a travel writer and eSIM enthusiast. Emily’s love for exploring new places has taken her all over the world. She now shares her experiences and tips for staying connected while traveling through her writing on eSIMradar.
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ニーズに最適なトラベル eSIM を比較して見つけ、プロバイダーから直接購入します。



eSIM プロファイルは数分以内に別の電子メールで届きます。または、プロバイダーのアプリで直接アクセスできます。



メール内のeSIM QRコードをスマートフォンのカメラ機能で読み取り、画面の指示に従って操作してください。プロファイルは自動的に設定されます。




210 か国以上で 28,000 以上の eSIM データ プランを検索

eSIM を選択する理由



eSIM はデジタルのみで動作するため、従来の SIM カードよりも使用されるリソースが少なくなります。



新しい eSIM はスマートフォンにデジタルで簡単にアップロードできます。迅速で環境を節約します。



eSIM プロファイルは電子メールで簡単かつ便利に送信されます。これは、物理的な SIM カードを郵送するよりもはるかに早くデジタル eSIM を受け取ることができることを意味します。

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書く レビュー

eSIM プロバイダーまたはその eSIM プランに関するレビューを提供して他の人を支援します