Random IMEI Generator

The Random IMEI Generator creates valid International Mobile Equipment Identity (IMEI) numbers that pass the Luhn algorithm check. Each generated IMEI follows the correct 15-digit structure with authentic TAC (Type Allocation Code) prefixes from major device manufacturers. This tool is designed for software testing, mobile app development, and educational purposes.

Understanding IMEI Numbers

An IMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to every mobile phone, smartphone, and some satellite phones. Think of it as a fingerprint for your mobile device - no two devices in the world share the same IMEI number.

• TAC (Type Allocation Code) - Digits 1-8: Assigned by the GSMA, this identifies the device manufacturer and model. For example, certain TAC ranges are allocated to Apple for iPhones, Samsung for Galaxy devices, and so on.
• Serial Number - Digits 9-14: A unique serial number assigned by the manufacturer to distinguish individual devices within the same model.
• Luhn Check Digit - Digit 15: A single digit calculated using the Luhn algorithm that validates the entire IMEI number. This prevents data entry errors and ensures structural integrity.

How the Luhn Algorithm Works

The Luhn algorithm (also known as the "modulus 10" or "mod 10" algorithm) is a simple checksum formula used to validate a variety of identification numbers, including IMEI numbers, credit card numbers, and national identification numbers. Here is how it validates an IMEI:

1. Start from the rightmost digit (the check digit) and move left
2. Double every second digit (positions 2, 4, 6, 8, 10, 12, 14 from the right)
3. If doubling produces a number greater than 9, subtract 9 from the result
4. Sum all digits (both doubled and undoubled)
5. If the total is divisible by 10, the IMEI is valid

Our generator calculates the check digit by finding the value that makes the sum of all 15 digits divisible by 10, guaranteeing every generated IMEI passes Luhn validation.

Supported Manufacturers

The generator uses real TAC prefixes from these major device manufacturers to create realistic IMEI numbers:

• Apple - iPhone, iPad cellular models
• Samsung - Galaxy S, Galaxy A, Galaxy Note series
• Google - Pixel phone series
• Huawei - P series, Mate series
• Xiaomi - Mi, Redmi, POCO series
• OnePlus - OnePlus numbered series
• Sony - Xperia series
• LG - Various LG smartphones
• Motorola - Moto G, Moto Edge series
• Nokia - Nokia smartphone series

Use Cases for Generated IMEI Numbers

Software Testing and QA

Mobile application developers frequently need valid IMEI numbers to test device identification features, input validation, and IMEI-related functionality without using real device identifiers. Generated IMEIs provide a safe, privacy-respecting alternative.

MDM System Development

Mobile Device Management (MDM) systems require IMEI numbers for device enrollment, tracking, and policy management. Testing these systems with generated IMEIs avoids exposing real device identities during development.

Database Population

When building test databases or demo environments for telecom applications, inventory management systems, or device tracking platforms, bulk-generated IMEIs provide realistic test data.

Educational Purposes

Students and professionals learning about mobile telecommunications, the Luhn algorithm, or device identification standards can use this tool to understand how IMEI numbers are structured and validated.

Data Anonymization

When preparing datasets for analysis or sharing, real IMEI numbers can be replaced with generated ones to protect device owner privacy while maintaining data format consistency.

Frequently Asked Questions

What is an IMEI number and why is it important?

An IMEI (International Mobile Equipment Identity) is a unique 15-digit number assigned to every mobile device. It consists of three parts: the TAC (Type Allocation Code, digits 1-8) which identifies the device manufacturer and model, the serial number (digits 9-14) which is unique to each device, and the Luhn check digit (digit 15) which validates the number's integrity. IMEIs are used for device identification, tracking stolen phones, network access control, and mobile device management.

Are the generated IMEI numbers valid?

Yes, all generated IMEI numbers pass the Luhn algorithm check, which is the mathematical validation used to verify IMEI integrity. The generator uses real TAC (Type Allocation Code) prefixes from major manufacturers like Apple, Samsung, Google, and others to create realistic IMEI structures. However, these are randomly generated numbers meant for testing purposes only - they are not associated with any real physical device.

What is the Luhn algorithm and how does it validate IMEI numbers?

The Luhn algorithm (also called the mod-10 algorithm) is a checksum formula that validates identification numbers including IMEI. It works by: (1) Starting from the rightmost digit, doubling every second digit, (2) If doubling produces a number greater than 9, subtracting 9, (3) Summing all the resulting digits, (4) If the total is divisible by 10, the number is valid. The last digit of an IMEI is specifically calculated to make the entire 15-digit number pass this check.

Can I use these IMEI numbers for testing and development?

Yes, the primary purpose of this tool is generating IMEI numbers for software testing, mobile app development, device management system testing, and educational purposes. These generated IMEIs are structurally valid but not registered to any real device. They are ideal for populating test databases, validating IMEI input fields, testing MDM (Mobile Device Management) systems, and learning about IMEI structure and the Luhn algorithm.

What is a TAC (Type Allocation Code) in an IMEI?

The TAC (Type Allocation Code) is the first 8 digits of an IMEI number. It identifies the device manufacturer and model. TACs are assigned by the GSMA (Global System for Mobile Communications Association) to device manufacturers. For example, different TAC prefixes identify devices from Apple, Samsung, Google, Huawei, and other manufacturers. Our generator uses real TAC prefixes to produce realistic IMEI numbers.

How many IMEI numbers can I generate at once?

You can generate up to 100 IMEI numbers in a single batch. For bulk generation, all IMEIs can be copied to clipboard at once or exported as a CSV file. When generating 1-5 IMEIs, a detailed Luhn algorithm breakdown is shown for each number. For larger batches, results are displayed in a compact table format with individual copy buttons.

Technical Details

Random Generation

The tool uses Python's random module on the server side for generating IMEI serial numbers. The randomness is seeded with system entropy, providing unpredictable and statistically uniform outputs suitable for testing purposes.

TAC Database

The generator maintains a curated database of real TAC prefixes from major device manufacturers. When you select a specific manufacturer, a TAC from that manufacturer is randomly chosen. When set to "Random," a TAC from any manufacturer in the database may be selected.

Luhn Implementation

The Luhn check digit is calculated by summing the first 14 digits (with alternating doubling), then finding the digit that makes the total divisible by 10. This ensures every generated IMEI number passes standard Luhn validation checks.

Additional Resources

Learn more about IMEI numbers and the Luhn algorithm:

• IMEI - Wikipedia
• Luhn Algorithm - Wikipedia
• GSMA IMEI Allocation Guidelines