MEID vs ESN

Client

MEID vs ESN: Electronic Serial Numbers were shorter decimal or hex codes on early CDMA phones. MEID replaced ESN as identifiers exhausted. This tool validates MEID Luhn—not historical ESN dec calculators.

When labels still say ESN

Older documentation may say ESN for what is now a MEID on the label. Paste the full 14–15 hex or 18–19 decimal string—length guards show which format applies.

Privacy: checksum math runs locally in your tab. Toolcore does not query carrier or TIA MEID databases—format and Luhn check only.
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CDMA MEIDs appear as 14 hexadecimal digits plus an optional check digit (15 total), or as an 18-digit decimal form with its own check digit. Hex values containing A–F use Luhn mod‑16; all‑ decimal hex uses Luhn mod‑10—same family as IMEI on GSM handsets.

Result

GSM devices use IMEI instead—open IMEI checker when the label shows a 15-digit decimal identifier.

Passes MEID Luhn check for AF0123450ABCDEC (hex form).

Reporting body (RR)
AF
Hex compact
AF0123450ABCDE
Manufacturer code
012345
Serial number
0ABCDE

Common use cases

  • Explain migration fields on legacy Verizon/Sprint inventory sheets.
  • Map informal ESN labels to MEID columns in data cleanup.

Common mistakes to avoid

  • Expecting MEID validator to accept 8-digit ESN paste

    ESN lengths and rules differ—use MEID after carrier migration.

FAQ

Did MEID replace ESN?

Yes—MEID expanded the space as ESN allocations were exhausted on CDMA networks.

Common search terms

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

  • meid checker online cdma luhn
  • mobile equipment identifier validate browser
  • hex meid check digit calculator locally
  • cdma meid decimal format checksum
  • meid validate no carrier lookup

More tools

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