ICCID field service tool

Client

ICCID field service tool supports technicians validating SIM serials on-site before modem swap or smart meter install. Mobile browser paste—Luhn and MII readout without laptop software.

Van stock workflow

Scan bin label, paste, Luhn pass, install, photo serial for CMMS closure.

Privacy: digits are evaluated only inside your browser. There is no carrier, GSMA, or SM-DP+ query—format math only. Treat SIM identifiers like any sensitive operational paste.
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The ITU‑T E.118 layout follows ISO/IEC 7812 for card identifiers: a Major Industry Identifier (telecom ICCIDs usually start with 89), an issuer/country/account block, then a trailing Luhn mod‑10 check digit using the same doubling rule as many payment PAN validators. Printed cards commonly show 18–22 digits; issuers pin one length profile per range.

Result

Passes Luhn mod 10 on the full 19-digit string.

  • MII (first 2): 89
  • Issuer / account core (between MII and check): 3530012345678901
  • Check digit (last): 1

Common use cases

  • Confirm sticker serial before closing work order.
  • Validate truck stock sample during weekly inventory.
  • Compare modem label to customer paperwork photo.

Common mistakes to avoid

  • Installing modem before serial validation

    Validate serial while still on the bench when possible.

  • Using field tool in low-signal without cached page

    Load page on Wi-Fi—Luhn runs offline after first load.

  • Photographing serial into public chat apps

    Use company-approved ticket channels.

FAQ

Works on phone browsers?

Yes—paste from camera app OCR or manual entry.

Offline after load?

Luhn runs client-side once the page is cached.

Meter and fleet use cases?

Same serial validation—pair with industry-specific runbooks.

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.