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Apple ECID Decode

Canonicalize an Apple ECID (Exclusive Chip ID) to 16-digit hex with 0x prefix, or paste a full iPhone UDID to identify the chip (A14, A18, etc.) and ECID portion.

Accepts hex (with or without 0x prefix) or a decimal integer. Output is canonical 16-digit zero-padded lowercase hex with 0x prefix, matching what irecovery and idevicerestore expect.

— OR —

Modern iPhone UDIDs are <CPID:8>-<ECID:16> format. Pasting one extracts and identifies both parts.

CPID → chip mapping covers iPhone 5s through iPhone 16 Pro Max. New CPIDs are added as Apple ships new SoCs.