IMEI Validator
IMEI Validator: free, instant and private. The Luhn check catches every single-digit typo and most transpositions.
How the IMEI Validator works
The IMEI Validator takes IMEI (15 digits) and returns the answer instantly — no button to hunt for, no page reload. The Luhn check catches every single-digit typo and most transpositions. Dial *#06# to see your phone’s IMEI and compare — a mismatch between the box, the SIM tray and the software is the classic red flag on a refurbished handset.
Enter your own numbers to replace the example values; the result panel updates as you type. Everything runs in this single page, so nothing you enter leaves your device.
Formula used
15 digits, validated by the Luhn checksum
| Symbol | Meaning |
|---|---|
| TAC | first 8 digits — the Type Allocation Code identifying model and origin |
| check digit | the 15th digit, computed from the first fourteen |
The Luhn check catches every single-digit typo and most transpositions. Dial *#06# to see your phone’s IMEI and compare — a mismatch between the box, the SIM tray and the software is the classic red flag on a refurbished handset.
Inputs used: IMEI (15 digits).
Worked example
Take the default example — imei (15 digits) of 490154203237518:
- Verdict: true
- Details: Checksum valid (Luhn) · Type Allocation Code: 49015420
- tac: 49015420
- reportingBody: CTIA (US)
Frequently asked questions
- What formula does the IMEI Validator use?
- It uses 15 digits, validated by the Luhn checksum, where TAC is the first 8 digits — the Type Allocation Code identifying model and origin; check digit is the the 15th digit, computed from the first fourteen.
- Is the IMEI Validator free?
- Yes. There is no signup, no usage limit and no watermark — the calculator runs entirely in your browser.
- How do I read the result?
- The Luhn check catches every single-digit typo and most transpositions. Dial *#06# to see your phone’s IMEI and compare — a mismatch between the box, the SIM tray and the software is the classic red flag on a refurbished handset.
- Does the IMEI Validator store or send my data?
- No. Every calculation happens locally in the page, so the numbers you type are never uploaded or logged.
- Does it work on a phone and offline?
- Yes — the page is a single lightweight file that adapts to any screen size. Once it has loaded it keeps working without a network connection.