IMEI IMEISV format check

Client

IMEI IMEISV format check helps when exports mix 15- and 16-digit strings. Paste below to classify length, run Luhn where applicable, and read software-version field hints on IMEISV—no blind truncation.

When exports show IMEISV

Some OSS and inventory tools export IMEISV after modem firmware updates. Do not strip the extra digit—classify first, then apply the correct validation path.

Privacy: digits are parsed only in your browser—no carrier or GSMA lookup, no upload. Treat device identifiers like any sensitive paste on shared machines.
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A 15-digit IMEI is commonly described as eight-digit TAC + six-digit serial + Luhn check digit; the trailing digit should satisfy ISO/IEC 7812 mod 10 on the full string—same arithmetic as debit/credit PAN checks. A 16-digit IMEISVappends two software version digits instead of exposing the standalone check position; carriers may still relate it to IMEI numbering but this page stops at segmentation and does not certify assignment.

Result

Passes Luhn mod 10 on the 15-digit string.

  • TAC (8): 35693803
  • Serial (6): 564380
  • Check (1): 9

Common use cases

  • IMEI IMEISV format check on legacy provisioning CSV columns.
  • Train ops on when firmware updates surface IMEISV instead of IMEI.
  • Filter malformed rows before SQL bulk insert.

Common mistakes to avoid

  • Truncating IMEISV to force 15-digit Luhn

    Use IMEISV-aware parsing for 16-digit strings.

  • Treating IMEISV as invalid IMEI without classification

    Classify length first—different segment layout.

  • Expecting IMEISV check to return software version name

    Structural readout only—no OEM firmware directory.

FAQ

What is the difference between IMEI and IMEISV?

IMEI is 15 digits; IMEISV adds a software version field—typically 16 digits.

Which should I paste for activation?

Follow your portal label—often 15-digit IMEI for handset forms.

Does IMEISV use Luhn?

Paste below—IMEISV-aware local parsing applies appropriate checks.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

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More tools

Related utilities you can open in another tab—mostly client-side.