# IMEI Validator

Validate IMEI numbers for mobile devices using Luhn checksum algorithm

> Canonical page: https://elysiatools.com/en/tools/imei-validator

- **Category:** Validation

- **Keywords:** imei, validator, mobile, phone, device, serial, checksum, luhn

## Overview

The IMEI Validator is a precise utility designed to verify the authenticity of 15-digit International Mobile Equipment Identity (IMEI) numbers using the standard Luhn checksum algorithm.

## Inputs

- **IMEI Number** (text): Enter a 15-digit IMEI number (with or without separators)

## When to use

- Verify the validity of a mobile device's IMEI before purchasing a used phone.
- Check for potential typos or formatting errors in recorded device serial numbers.
- Ensure a device identifier meets the global standard for mobile equipment identification.

## How it works

- Input the 15-digit IMEI number into the validator field.
- The tool strips away any separators like hyphens or spaces.
- It applies the Luhn algorithm to calculate the checksum and verify the number's integrity.
- The tool instantly confirms whether the provided IMEI is valid or invalid.

## Use cases

- Second-hand mobile device verification for buyers and sellers.
- Inventory management for mobile repair shops and refurbishers.
- Data entry quality control for mobile device registration forms.

## Frequently asked questions

### What is an IMEI number?

An IMEI is a unique 15-digit identification number assigned to every GSM, WCDMA, and LTE mobile phone.

### Does this tool check if a phone is blacklisted?

No, this tool only validates the mathematical structure and checksum of the IMEI number, not its status in carrier databases.

### Can I enter an IMEI with hyphens?

Yes, the validator automatically ignores hyphens and spaces to process the core 15-digit sequence.

### What algorithm does this validator use?

It uses the Luhn algorithm, which is the industry-standard checksum formula for validating identification numbers.

### Is my IMEI data stored by this tool?

No, all validation is performed locally in your browser, and no data is saved or transmitted to our servers.

## Related tools

- [Global Phone Validator](https://elysiatools.com/en/tools/global-phone-validator): Validate phone numbers from multiple countries including China, US, and more with detailed formatting and carrier info
- [IMSI Validator](https://elysiatools.com/en/tools/imsi-validator): Validate IMSI numbers for mobile subscribers with MCC/MNC analysis
- [Mod-11 Checksum Calculator](https://elysiatools.com/en/tools/mod11-checksum): Validate or generate numbers using the Modulus-11 (ISO 7064) check-digit algorithm with ISBN-10 (10..2), Norwegian-ID (3,7,6,1,8,9,4,5,2) and generic 2-7 weight schemes.
- [Phone Validator](https://elysiatools.com/en/tools/phone-validator): Validate and format phone numbers internationally
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- [IBAN & SWIFT Validator](https://elysiatools.com/en/tools/iban-swift-validator): Validate International Bank Account Number (IBAN) and SWIFT/BIC codes with checksum verification
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## Samples

- [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion
- [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion
- [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
- [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion

## Related content

- [Check-Digit and Checksum Validation](https://elysiatools.com/en/hubs/check-digit-checksum-validation): Normalize an identifier, select its specified checksum path, and verify format before accepting it.